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Siemens 3RW44 Manual

Industrial control soft starters
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Manual
Industrial Controls
Soft Starters
3RW44
Edition
03/2017
siemens.com/industrial-controls

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Summary of Contents for Siemens 3RW44

  • Page 1 Manual Industrial Controls Soft Starters 3RW44 Edition 03/2017 siemens.com/industrial-controls...
  • Page 2 Introduction ___________________ Industrial Controls Configuration instructions ___________________ Installation, connection and feeder configuration Soft starters and solid-state switching devices ___________________ Display, controls and device 3RW44 soft starters interfaces ___________________ Commissioning Manual ___________________ Device functions ___________________ Diagnostics and messages ___________________ PROFIBUS DP...
  • Page 3 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.

  • Page 4: Table Of Contents

    ...................... 12 2.1.1 Three-phase asynchronous motor ..................12 2.1.2 Principle of operation of the 3RW44 electronic soft starter ........... 14 Application and use ........................ 17 Marginal conditions for storage and operation ............... 19 Configuration instructions ........................20 Configuration ..........................
  • Page 5 6.1.2 Changing parameters: for example motor data ..............49 Switching on for the first time ....................50 6.2.1 Recommended procedure for commissioning 3RW44 ............50 6.2.2 Quick start menu, when switching on for the first time ............51 6.2.3 Problems that can occur ......................53 6.2.4...
  • Page 6 PROFIBUS DP commissioning using the GSD file in STEP 7 (example) ......164 9.6.1 Introduction .......................... 164 9.6.2 Configuration using the Device Master Data (GSD) in STEP 7 ........... 165 9.6.3 Integration into the user program ..................168 9.6.4 Switching on ......................... 168 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 7 3RW44 in a standard circuit with control via keys ..............216 10.1.2 3RW44 in a standard circuit with line contactor and control via PLC ........218 10.1.3 3RW44 in a standard circuit and DC braking stopping function for device types 3RW44 22 to 3RW44 25 ........................
  • Page 8 10.1.18 Soft starter with direct-on-line starting (DOL) as emergency start ........240 10.1.19 Soft starter with star-delta starter as emergency start (3RW44 in a standard circuit) ..241 10.1.20 Soft starter and frequency converter on one motor ............. 242 General technical data ........................... 243 11.1...

  • Page 9: Important Notes

    Product Information. Definitions Where the short form 3RW44 is used in the text, it refers to the SIRIUS 3RW44 soft starter. Standards and approvals The SIRIUS 3RW44 soft starter is based on IEC/EN 60947-4-2.
  • Page 10 The manufacturer of the system or machine is responsible for ensuring the correct overall functioning. SIEMENS AG, its regional offices, and associated companies (hereinafter referred to as "SIEMENS") cannot guarantee all the properties of a system or machine not designed by SIEMENS.

  • Page 11: Security Information

    In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions only form one element of such a concept. Customer is responsible to prevent unauthorized access to its plants, systems, machines and networks.

  • Page 12: Introduction

    . Depending on (startup) the motor version it can amount to between three times and fifteen times the rated operational current. Seven to eight times the rated motor current can be taken as a typical value. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 13 For the load machine this means that the starting and acceleration forces in relation to rated operation give rise to a higher mechanical load on the machine and the conveyed material. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 14: Principle Of Operation Of The 3Rw44 Electronic Soft Starter

    2.1.2 Principle of operation of the 3RW44 electronic soft starter The 3RW44 soft starter features two antiparallel thyristors in each of the phases. There is one thyristor for the positive and one thyristor for the negative half-wave. The rms value of the motor voltage is increased (from an adjustable starting voltage or starting torque) to the rated motor voltage within a definable starting time by means of the leading-edge phase.
  • Page 15 The diagrams below show the starting current and torque characteristics for a three-phase asynchronous motor in combination with a soft starter: Figure 2-3 Reduced current characteristic of a three-phase asynchronous motor during startup with a SIRIUS 3RW44 soft starter 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 16 2.1 Basic physical principles of the three-phase asynchronous motor and operating principle of the soft starter Figure 2-4 Reduced torque characteristic of a three-phase asynchronous motor during startup with a SIRIUS 3RW44 soft starter Startup This means that, since the motor voltage is controlled by the electronic soft starter during the startup process, the consumed starting current and the starting torque generated in the motor are also controlled.

  • Page 17: Application And Use

    Phase angle control and schematic diagram of a soft starter with internal bypass contacts Application and use Applications and selection criteria 3RW44 soft starters can be used as an alternative to star-delta (wye-delta) starters and frequency converters. Their main benefits are their ability to perform soft starting, soft stops, and uninterrupted changeover without current peaks that put a strain on the system, as well as their compact dimensions.
  • Page 18 ● Smooth braking Rotary pumps, piston pumps: ● No pressure surges ● Increased service life of the pipe system Agitators, mixers: ● Reduced starting current Fans: ● Reduced stress on gearbox and V belt 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 19: Marginal Conditions For Storage And Operation

    10 ... 95 % Permissible maximum installation altitude 5000 m, from 1000 m with derating NOTICE Risk of property damage. Make sure no liquids, dust, or conductive objects can get inside the soft starter. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 20: Configuration Instructions

    Configuration instructions Configuration The 3RW44 electronic soft starters are designed for normal starting. In case of heavy starting or increased starting frequency, a larger unit may have to be selected. For long starting times it is recommended to have a PTC sensor in the motor. This also...

  • Page 21: Startup Class

    (Page 259). If deviations from this data occurs, the starters may need to be overdimensioned. Selection criteria Note You must select the size of your SIRIUS 3RW44 soft starters according to the rated motor current (rated current ≥ rated motor current). soft starter...

  • Page 22: Application Examples For Normal Starting (Class 10)

    Breakaway Deactivated Deactivated Deactivated Deactivated Deactivated Deactivated pulse (0 ms) (0 ms) (0 ms) (0 ms) (0 ms) (0 ms) Coasting Soft stop Soft stop Coasting down Coasting down Pump stop Coasting down method 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 23: Application Examples For Heavy Starting (Class 20)

    • Torque ramp Starting torque • End torque • Starting time • Breakaway pulse Deactivated (0 ms) Deactivated (0 ms) Deactivated (0 ms) Coasting method Coasting down Coasting down Coasting down or DC braking 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 24: Application Examples For Very Heavy Starting (Class 30)

    The settings and device dimensions indicated in these tables are examples only; they are merely provided for information purposes and are not binding. Set values depend on the application in question and must be optimized during commissioning. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 25: On Time And Switching Frequency

    3.3 ON time and switching frequency ON time and switching frequency Based on the rated motor current and the startup class, the 3RW44 soft starters are dimensioned for a maximum permissible switching frequency in combination with a relative ON time. See also Chapter Technical data of the power unit (Page 259). A larger soft starter may have to be selected if these values are exceeded.

  • Page 26: Installation Altitude And Ambient Temperature

    Reduction as a function of the installation altitude Ambient temperature 3RW44 soft starters are designed for operation with rated current at an ambient temperature of 40 °C. If this temperature is exceeded, e.g. owing to an impermissible temperature rise in...

  • Page 27: Factory Settings

    Factory settings Reset to the factory settings (default) ● if parameter settings are incorrect ● if continued use is to be made of already parameterized SIRIUS 3RW44 soft starters in other systems. Note Otherwise, drives could break away in certain circumstances due to existing parameter assignments.

  • Page 28: Article Number System For Sirius 3Rw44 Soft Starters

    Configuration instructions 3.6 Article number system for SIRIUS 3RW44 soft starters Article number system for SIRIUS 3RW44 soft starters 3RW4* VIII * Fields are not configurable I Identifier of the basic unit AC semiconductor motor control device (soft starter) II Device version: 4 High-End soft starter...

  • Page 29: Installation, Connection And Feeder Configuration

    Do not lift the device by the cover when unpacking it as this could lead to damage. 4.1.2 Mounting position The soft starter is mounted vertically on vertical, level surfaces. Figure 4-1 Mounting position 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 30: Installation Requirements

    Note Coated circuit boards All 3RW44 soft starters with a production date G/150206 onwards are equipped as standard with coated printed circuit boards to improve protection of the device against tough ambient conditions such as dust, moisture or other harmful influences.

  • Page 31: Mounting Dimensions And Clearances

    Figure 4-2 Clearance to other devices NOTICE Allow sufficient clearances for the cooling air to circulate freely. The device is ventilated from bottom to top. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 32: Design Of The Feeder

    (For details of fuse and circuit breaker assignment, refer to chapter Feeder component layout (standard circuit) (Page 270) and chapter Feeder component layout (inside-delta circuit) (Page 275). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 33: Soft Starters In Standard Circuits

    Installation, connection and feeder configuration 4.2 Design of the feeder Contact element The 3RW44 soft starter performs the functions of the contact element and motor protection. DANGER Hazardous voltage. Danger to life or risk of serious injury. If line voltage is present at the input terminals of the soft starter, hazardous voltage may still be present at the soft starter output even if a start command has not been issued.
  • Page 34 100 ms of activation of the start command for the 3RW44. If the contactor is not connected within 100 ms of activation of the start command for the 3RW44, the soft starter no longer recognizes the current circuit variant (standard circuit or inside-delta circuit).

  • Page 35: Soft Starters In Inside-Delta Circuits

    Figure 4-4 Nameplate of a 22 kW motor The SIRIUS 3RW44 soft starter can be dimensioned to match the current flowing in the motor section (58 % of the conductor current) by connecting it to the delta winding of the motor.
  • Page 36 Installation, connection and feeder configuration 4.2 Design of the feeder The 3RW44 soft starter automatically detects how it is connected, meaning that the connection type does not have to be explicitly set on the device. The detected connection type can be read on the starter in the "Status display/Type of connection" menu item. In this case, the display reads "Inside-delta circuit".
  • Page 37 100 ms of activation of the start command for the 3RW44. If the contactor is not connected within 100 ms of activation of the start command for the 3RW44, the soft starter no longer recognizes the current circuit variant (standard circuit or inside-delta circuit).

  • Page 38: Soft Starter With Contactor Disconnector (Main Contactor)

    100 ms of activation of the start command for the 3RW44. If the contactor is not connected within 100 ms of activation of the start command for the 3RW44, the soft starter no longer recognizes the current circuit variant (standard circuit or inside-delta circuit).
  • Page 39 1 s for the main contactor or control the main contactor via an output with parameterized "ON time" function as described in chapter 3RW44 in a standard circuit with line contactor and control via PLC (Page 218).

  • Page 40: Protection Of The Soft Starter Against Short-Circuits (Type Of Assignment 2)

    Special semiconductor fuses, e.g. SITOR fuses from SIEMENS, must be used for this purpose. Figure 4-7...

  • Page 41: Capacitors For Improving The Power Factor

    This internal thyristor protection function is not sufficient, however, in the event of a defect in the motor windings or a short-circuit in the motor's power supply cable, for example. Special semiconductor fuses, e.g. SITOR fuses from SIEMENS, must be used for this purpose.

  • Page 42: Generator Operation With Three-Phase Asynchronous Motor

    Connecting the generator directly in the supersynchronous range may cause soft starter faults. Electrical connection 4.6.1 Control and auxiliary circuit connection The SIRIUS 3RW44 soft starter is supplied with two different connection systems: ● Screw connections ● Spring-loaded connections Two control voltage versions are available: ● 115 V AC ●...
  • Page 43 Installation, connection and feeder configuration 4.6 Electrical connection Sizes 3RW44 3. and 3RW44 4. For size 3RW44 3. and 3RW44 4. devices, it is possible to retrofit box terminals as optional accessories (see chapter Accessories (Page 277)). Figure 4-8 Connections...

  • Page 44: Conductor Cross-Sections

    1 x 0.5…4.0 mm 2 x 0.25…1.5 mm 2 x 0.5…2.5 mm 2 x 0.5…1.5 mm 2 x 0.25…1.5 mm 1 x 0.5…2.5 mm 2 x 0.25…1.5 mm 2 x 20...14 2 x 24...16 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 45 Installation, connection and feeder configuration 4.6 Electrical connection L1, L2, L3; T1, T2, T3 3RW44 2.-... 3RW44 3.-... 3RW44 4.-... 3RW44 5.-... / 3RW44 6.-... 4…6 Nm M8x25 10…14 Nm M10x30 14…24 Nm M12x40 20…35 Nm 36…53 lb.in 89…124 lb.in 124…210 lb.in...

  • Page 46: Display, Controls And Device Interfaces

    Display with keys Customer read No motor only Serial interface Customer write Startup Control inputs Motor is running PLC via PROFIBUS/ Run down PROFINET PC via bus Motor ready to start No control device 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 47: Device Interfaces

    After switching on, the SIRIUS 3RW44 soft starter automatically recognizes that the external display and control module has been connected. The 3RW44 display will be inverted and the display and control module's display will be shown normally.

  • Page 48: Commissioning

    Commissioning Menu structure, navigation, changing parameters The 3RW44 functions (parameterization, diagnostics and motor control) can be executed using the four control keys. The menu has various sub-levels, which must be handled in different ways but are self-explanatory. 6.1.1 Menu structure and navigation...

  • Page 49: Changing Parameters: For Example Motor Data

    Commissioning 6.1 Menu structure, navigation, changing parameters 6.1.2 Changing parameters: for example motor data Changing values, e.g. adjusting motor data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 50: Switching On For The First Time

    Before switching the device on for the first time, verify that the main/control side is wired properly. Make sure that the line and control voltages comply with the device-specific requirements (refer to chapter Technical data (Page 253)). 6.2.1 Recommended procedure for commissioning 3RW44 Suggested Startup parameters Stopping parameters...

  • Page 51: Quick Start Menu, When Switching On For The First Time

    Commissioning 6.2 Switching on for the first time 6.2.2 Quick start menu, when switching on for the first time Quick commissioning of the soft starter 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 52 Commissioning 6.2 Switching on for the first time 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 53: Problems That Can Occur

    Commissioning 6.2 Switching on for the first time 6.2.3 Problems that can occur The motor does not directly start smoothly 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 54 Commissioning 6.2 Switching on for the first time The motor does not swiftly reach its nominal rotational speed in the desired time 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 55 Commissioning 6.2 Switching on for the first time The motor does not reach zero speed as desired 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 56: Quick Start Menu

    (refer to "Restoring the factory settings" in chapter Saving options (Page 102)). This overwrites all settings made up to that point. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 57 Commissioning 6.3 User-specific commissioning Quick Start menu 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 58: User-Specific Commissioning

    If values are required that differ from the defined parameters in the Quick Start menu or in the factory settings of the 3RW44, please proceed as follows: Under the "Settings" menu item, select (refer to chapter Settings main menu item (Page 59)).

  • Page 59: Settings Main Menu Item

    Commissioning 6.3 User-specific commissioning 6.3.1 Settings main menu item Settings main menu item 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 60: Making Settings In The Selected Parameter Set

    Commissioning 6.4 Making settings in the selected parameter set Making settings in the selected parameter set 6.4.1 Selecting the parameter set Selecting the parameter set 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 61: Entering The Motor Data

    Commissioning 6.4 Making settings in the selected parameter set 6.4.2 Entering the motor data Entering the motor data and nameplate 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 62 (e.g. for testing purposes), this rated data must be adapted to the new motor. If 0 Nm is entered as the rated torque, the value is automatically calculated once by the soft starter. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 63: Specifying The Startup Mode

    Commissioning 6.4 Making settings in the selected parameter set 6.4.3 Specifying the startup mode Specifying the startup mode 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 64 Commissioning 6.4 Making settings in the selected parameter set "Voltage ramp" startup mode 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 65 Commissioning 6.4 Making settings in the selected parameter set 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 66 Commissioning 6.4 Making settings in the selected parameter set "Voltage ramp with current limiting" startup mode 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 67 Commissioning 6.4 Making settings in the selected parameter set 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 68 Commissioning 6.4 Making settings in the selected parameter set "Torque control" startup mode 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 69 * The parameter value should be set to approx. 150 % to start the motor. It should be high enough to ensure that the motor does not become stuck during run-up. This ensures that enough acceleration torque is generated throughout the motor run-up phase. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 70 Commissioning 6.4 Making settings in the selected parameter set "Torque control with current limiting" startup mode 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 71 Commissioning 6.4 Making settings in the selected parameter set 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 72 Commissioning 6.4 Making settings in the selected parameter set "Direct on-line starting" mode 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 73 Commissioning 6.4 Making settings in the selected parameter set 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 74 The "Motor heating" startup mode is not a continuous operating mode. The motor must be equipped with a temperature sensor (Thermoclick/PTC) to ensure motor protection. The motor model with integrated electronic motor overload protection is not suitable for this kind of operation. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 75: Specifying The Coasting Method

    Commissioning 6.4 Making settings in the selected parameter set 6.4.4 Specifying the coasting method Specifying the coasting method 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 76 Commissioning 6.4 Making settings in the selected parameter set 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 77 Commissioning 6.4 Making settings in the selected parameter set "Coasting down" coasting method 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 78 Commissioning 6.4 Making settings in the selected parameter set "Torque control" coasting method (soft stop) 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 79 Commissioning 6.4 Making settings in the selected parameter set 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 80 Commissioning 6.4 Making settings in the selected parameter set "Pump stop" coasting method 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 81 Commissioning 6.4 Making settings in the selected parameter set 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 82 Commissioning 6.4 Making settings in the selected parameter set "DC braking" coasting method 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 83 Note If the "DC braking" function is selected, the "DC braking contactor" function must be assigned to one output of the soft starter. This output must be used to control an external braking contactor. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 84 Commissioning 6.4 Making settings in the selected parameter set "Combined braking" coasting method 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 85 Commissioning 6.4 Making settings in the selected parameter set NOTICE The DC braking/combined braking stopping function is not possible in inside-delta circuits. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 86: Setting Slow Speed Parameters

    Commissioning 6.4 Making settings in the selected parameter set 6.4.5 Setting slow speed parameters Setting slow speed parameters 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 87 "Motor CW PS1/2/3" or "Motor CCW PS1/2/3" function must at the same time be assigned to the other. See also Chapter 3RW44 in a standard circuit with soft start/stop and additional slow speed function in both directions of rotation with one parameter set (Page 224).

  • Page 88: Specifying Current Limit Values

    Commissioning 6.4 Making settings in the selected parameter set 6.4.6 Specifying current limit values Specifying current limit values 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 89: Parameterizing The Inputs

    Commissioning 6.4 Making settings in the selected parameter set 6.4.7 Parameterizing the inputs Parameterizing the inputs 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 90 NOTICE If the soft starter is switched off via a motor protection or inherent device protection tripping, the action cannot be acknowledged using the "Trip Reset" function until the displayed cooling time has expired. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 91 The "Trip Reset" input is edge-controlled. The level change from 0 to 24 V DC is evaluated at the input. All other input functions are evaluated at the already pending 24 V DC level. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 92: Parameterizing The Outputs

    Commissioning 6.4 Making settings in the selected parameter set 6.4.8 Parameterizing the outputs Parameterizing the outputs 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 93 State diagram of the outputs Note For possible group warnings/group faults, see chapter Warnings and group faults (Page 141). Note For switching delay times of the output functions, see chapter Technical data of the control section (Page 264). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 94: Selecting Motor Protection Settings

    Commissioning 6.4 Making settings in the selected parameter set 6.4.9 Selecting motor protection settings Selecting motor protection settings 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 95 The 3RW44 does not have ATEX certification. When an ATEX-certified overload relay is used (e.g. 3RB2 from Siemens) that affects an additional switching element (e.g. contactor), the 3RW44 can be installed in series with this overload relay, meaning that the ATEX requirements are met.
  • Page 96 Commissioning 6.4 Making settings in the selected parameter set 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 97: Selecting Display Settings

    Commissioning 6.4 Making settings in the selected parameter set 6.4.10 Selecting display settings Selecting display settings 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 98: Specifying The Behavior Of The Protective Functions

    Commissioning 6.4 Making settings in the selected parameter set 6.4.11 Specifying the behavior of the protective functions Specifying the behavior of the protective functions 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 99 Commissioning 6.4 Making settings in the selected parameter set Note * The ground fault function is only active after completion of run-up, not during startup. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 100: Specifying The Names On The Device Display

    Commissioning 6.4 Making settings in the selected parameter set 6.4.12 Specifying the names on the device display Specifying the names on the device display 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 101: Activating The Fieldbus Interface (Profibus Dp/Profinet Io)

    GSD file or in the OM when the bus is started. If this is not desired, the parameter must be set to "On". 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 102: Saving Options

    Commissioning 6.4 Making settings in the selected parameter set 6.4.14 Saving options Specifying the saving options 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 103 As long as the connected drive is controlled by the soft starter, no parameter changes carried out at the same time can be saved by means of the "Saving options" menu item. This is only possible after the motor has been shut off by the soft starter. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 104 Commissioning 6.4 Making settings in the selected parameter set Saving settings 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 105 Commissioning 6.4 Making settings in the selected parameter set Restoring settings Selected settings that have not been saved will be discarded and the previously saved settings will be restored. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 106 Restoring the factory settings All settings made or saved so far will be discarded and the device will be reset to the basic factory settings (master reset). The quick start menu must be executed once again. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 107: Other Device Functions

    Commissioning 6.5 Other device functions Other device functions 6.5.1 Measured values display 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 108 6.5 Other device functions Note When using the 3RW44 soft starter in an IT system with ground fault monitoring: 3RW44, product version < *E06* and the PROFIBUS DP communication module must not be used in this network configuration. 3RW44 soft starters from product version *E07* onwards can be used in combination with the PROFIBUS DP communication module.

  • Page 109: Status Display

    Commissioning 6.5 Other device functions 6.5.2 Status display 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 110: Motor Control (Assigning Control Priority)

    The "Standard control" menu item specifies which control device should be given control priority when the control supply voltage is applied. When the PROFIBUS/PROFINET communication module is activated, the setting is changed to "Automatic/None". 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 111 ● - 1: PC via PROFIBUS/PROFINET (Soft Starter ES professional software required) ● - 2: Inputs ● - 3: Via display keys ● - 4: PC via serial interface (Soft Starter ES smart software required) 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 112: Statistics

    The firmware product version is listed on the front of the device below the petrol- colored labeling field. The "Logbooks" sub-item can only be used in combination with "Soft Starter ES" parameterizing and diagnostics software. This menu item will be available in the device display from 04/2006. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 113 The "Logbooks" sub-item can only be used in combination with "Soft Starter ES" parameterizing and diagnostics software. This menu item will be available in the device display from 04/2006. Note Logbooks cannot be deleted while the motor is running. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 114 Commissioning 6.5 Other device functions Maximum pointer (minimum and maximum measured values are stored and displayed) 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 115 The firmware product version is listed on the front of the device below the petrol- colored labeling field. The "Logbooks" sub-item can only be used in combination with "Soft Starter ES" parameterizing and diagnostics software. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 116 Commissioning 6.5 Other device functions Statistical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 117 The value is incremented by 1 each time the output is set. Note The operating hours counter is activated as soon as control voltage is applied to the soft starter. Maximum value displayed: 99999:59:59 hours 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 118: Safety (Specifying The User Level, Parameterization Protection)

    Commissioning 6.5 Other device functions 6.5.5 Safety (specifying the user level, parameterization protection) 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 119: Device Functions

    Startup modes Different starting functions can be selected thanks to the large number of applications for which the SIRIUS 3RW44 soft starter can be used. The motor start can be optimally adapted to each particular application. 7.2.1 Voltage ramp The simplest type of soft start with the SIRIUS 3RW44 soft starter is achieved using a voltage ramp.
  • Page 120 100 % of the line voltage before the internal bypass contacts are closed. Figure 7-1 Function principle of the voltage ramp 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 121: Torque Control

    For optimum torque control during the starting procedure, the motor data of the motor connected to the soft starter should be entered in the selected parameter set using the "Setting" menu item. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 122 The "Maximum starting time" parameter can be used to determine the time after which the drive must have completed its run-up. If the drive is not operating under rated service conditions after the specified interval has expired, the startup procedure is interrupted and a fault message is generated. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 123 (Page 124). The "Torque control+current limiting (M+current limiting)" startup mode is recommended for heavy starting (refer to chapter Current limitation in combination with the voltage ramp or torque control startup mode (Page 125)). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 124: Breakaway Pulse In Combination With The Voltage Ramp Or Torque Control Startup Mode

    If 0 ms is set as the breakaway time (default), the breakaway pulse function is deactivated. Figure 7-4 Function principle of torque control breakaway pulse 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 125: Current Limitation In Combination With The Voltage Ramp Or Torque Control Startup Mode

    Three to four times the value of the motor's rated operational current (I ) can be assumed as typical here. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 126 Typical applications for current limiting Current limiting is used for applications with a large centrifugal mass (mass inertia) and therefore long starting times, e.g. large fans, to reduce the load on the power supply system. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 127: Direct Startup Mode

    The motor heating startup mode is not a continuous operating mode. The motor must be equipped with a temperature sensor (Thermoclick/PTC) to ensure motor protection. The motor model with integrated electronic motor overload protection is not suitable for this kind of operation. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 128: Coasting Methods

    Coasting methods Different coasting methods can be selected thanks to the large number of applications for which the SIRIUS 3RW44 soft starter can be used. The motor stop can be optimally adapted to each particular application. If a start command is issued during the stop process, the process is interrupted and the motor is started again with the set startup mode.

  • Page 129: Coasting Down

    ON command is removed. Within this coast- down time, the torque produced in the motor is continuously and linearly reduced to the set stopping torque, and the application is smoothly stopped. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 130 ● in conveyor belts to prevent the conveyed materials from toppling. CAUTION Risk of property damage For optimum motor protection, use the combination of electronic motor overload protection and evaluation of a temperature sensor installed in the motor. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 131: Dc Braking/Combined Braking

    The dynamic braking torque determines the braking effect at the start of the braking process to reduce the speed of the motor. The braking process is then continued automatically using the DC braking function. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 132 DC braking, through which an external braking contactor is controlled. You will find suggested circuits in chapter Typical circuit diagrams (Page 216). The ideal parameters must be set on the machine under applicable load conditions. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 133 Standstill detection does not take place in the soft starter and, if required, must be realized by means of external measures. Figure 7-9 DC braking Typical applications for DC braking Use "DC braking" in lathes (e.g. for tool change) or circular saws. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 134: Slow Speed Function

    The torque generated in the motor can be influenced with the slow speed torque. The maximum torque that can be generated depends on the selected slow speed. 100% slow speed torque can be equivalent to approximately 30% of the rated motor torque. Figure 7-10 Slow speed function 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 135: Current Limits For Load Monitoring

    Upper current limit The upper current limit can be used to determine increased power loss in the application, for example caused by bearing damage. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 136: Motor Protection Functions

    The maximum deviation from the mean value of the three phases is the reference value for evaluation. Asymmetry is considered to exist if the deviation from the mean value is greater than 40 %. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 137 These lead to tripping where motor protection in accordance with IEC 60947 is used, depending on the CLASS setting. The following schematic diagram shows the cooling behavior with and without idle time. Figure 7-11 Idle time 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 138 Note If the soft starter is switched off via a motor protection or inherent device protection tripping, the action cannot be acknowledged using the "Trip Reset" function until the displayed cooling time has expired. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 139: Intrinsic Device Protection

    Note If the soft starter is switched off via a motor protection or inherent device protection tripping, the action cannot be acknowledged using the "Trip Reset" function until the displayed cooling time has expired. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 140: Diagnostics And Messages

    30 s to allow the device to cool down. Emergency start active The emergency start function is activated. Quick stop active The quick stop function is activated. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 141: Warnings And Group Faults

    (set the breakaway pulse only when it is really required. In the case of pumps, for example, a breakaway pulse often leads to misfiring.) If there is an idle time < 5 s since the last start, the 3RW44 starts with a higher starting voltage. In combination with a set breakaway pulse, this can lead to "incorrect starting conditions".
  • Page 142 3RW44, product version < *E06* and the PROFIBUS DP communication module must not be used in this network configuration. Remedy: Replace starter with 3RW44, product version ≥ *E07*. Here, use in combination with the PROFIBUS DP communication module is admissible. However, the phase voltage values (UL-N) and phase-to- phase voltage values (UL-L) may be displayed incorrectly on the measured value display of the 3RW44.
  • Page 143 3RW44, product version < *E06* and the PROFIBUS DP communication module must not be used in this network configuration. Remedy: Replace starter with 3RW44, product version ≥ *E07*. Here, use in combination with the PROFIBUS DP communication module is admissible. However, the phase voltage values (UL-N) and phase-to- phase voltage values (UL-L) may be displayed incorrectly on the measured value display of the 3RW44.
  • Page 144 Remedy: Check the motor's operational current or check whether the ambient temperature in the soft starter's environment is too high (derating as from 40 °C; see chapter Technical data (Page 253)). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 145 (Page 253). If the soft starter is connected in an inside-delta circuit, the motor feeder may have been incorrectly wired (chapter 3RW44 in an inside- delta circuit (Page 221)); as a result, the "Status display/Connection type" menu item (chapter Status display (Page 109)) contains "Unkn./Fault".
  • Page 146 ≥ *E07*) Fault can only be reset after 30 s (for cooling down). Remedy: Check the motor and check soft starter dimensioning. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 147: Device Fault

    For all 3RW44 starters: If it was not possible to reset the fault message by switching the control supply voltage off and on again, contact your SIEMENS partner or Technical Assistance. Heatsink sensor short-circuit The temperature sensor on the heatsink of the starter is not connected or defective.
  • Page 148 L2 is missing). Note When using the 3RW44 soft starter in an IT system with ground fault monitoring: 3RW44, product version ≤ *E06* and the PROFIBUS DP communication module must not be used in this network configuration. 3RW44 soft starters from product version *E07* onwards can be used in combination with the PROFIBUS DP communication module.

  • Page 149: Profibus Dp Communication Module

    PROFIBUS DP communication module Introduction Using the communication module (PROFIBUS or PROFINET), the 3RW44 soft starter and its all its functionality can be integrated in the automation level. You will find the manual for the PROFINET communication module on the Internet (https://support.industry.siemens.com/cs/ww/en/view/85225796).
  • Page 150 3RW44 with PROFIBUS on redundant controllers and Y-Link: The 3RW44 acts like a DPV0 slave on Y-link. Parameter assignment is only possible via the GSD file and only cyclic data is transmitted, no data sets or alarms.

  • Page 151: Definitions

    PROFIBUS DP communication module 9.1 Introduction Further documentation on the subject of PROFIBUS DP SIRIUS PROFIBUS communication module for 3RW44 soft starter (https://support.industry.siemens.com/cs/ww/en/view/23071380) operating instructions with the article number 3ZX1012-0RW44-0KA0. Further documentation on the subject of PROFINET IO SIRIUS PROFINET communication module for 3RW44 soft starter (https://support.industry.siemens.com/cs/ww/en/view/85261694) operating instructions with...

  • Page 152: Data Transfer

    PROFIBUS DP communication module 9.2 Data transfer Data transfer 9.2.1 Options for data transfer The following figure shows the data transfer options: Figure 9-1 Options for data transfer 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 153: Communication Principle

    Can cause electric shock and burns. Turn off and lock out all power supplying the system and device before working on the device. Read the information in the SIRIUS PROFIBUS communication module for 3RW44 soft starter (https://support.industry.siemens.com/cs/ww/en/view/23071380) operating instructions with the article number 3ZX1012-0RW44-0KA0.

  • Page 154: Inserting The Profibus Dp Communication Module (Fieldbus Interface)

    Before inserting the PROFIBUS DP communication module, disconnect the power to the 3RW44 soft starter. Note The PROFIBUS DP communication module can only be operated on 3RW44 devices with product version "E06" or higher, implemented on devices from production date 060501 onwards.
  • Page 155 Proceed as follows: Step Description Slide a small screwdriver into the opening of the cover of the 3RW44 soft starter (1). Gently press the screwdriver downwards (2) and remove the cover (3). Insert the PROFIBUS DP communication module into the device (4).

  • Page 156: Activating The Profibus Dp Communication Module (Fieldbus Interface) And Setting The Station Address

    If an input with the "Manual mode local" function is active, the control priority does not change (refer to chapter Parameterizing the inputs (Page 89)). The soft starters are pre-set to station address 126 as the factory default. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 157: Activating The Profibus Dp Communication Module Via The Display, Setting The Station Address And Saving The Settings

    (refer to chapter Switching on for the first time (Page 50)). See also SIRIUS 3RW442/443/444/445/446 soft starter operating instructions (https://support.industry.siemens.com/cs/ww/en/view/21189750) (article number: 3ZX1012-0RW44-0AA0). 2. Press the designated button on the device. 3. The "BUS" LED flashes red. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 158 4. The PROFIBUS DP communication module has been successfully activated if the PROFIBUS icon appears on the display. The next step is to assign the desired station address for the 3RW44 as a PROFIBUS slave. In this example, the station address "23" has been selected.
  • Page 159 "Fieldbus" menu, the parameters set on the soft starter will be overwritten with the values stored in the GSD file or in the OM when the bus is started. If this is not desired, the parameter must be set to "On". 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 160: Activating The Profibus Dp Communication Module (Fieldbus Interface) And Setting

    Perform the following steps in order to activate the communication module: 1. Connect the 3RW44 soft starter via the interface cable to a PC on which the "Soft Starter ES Professional" or "Soft Starter ES Smart + Service Pack 1" software is installed.
  • Page 161 The soft starter only reads the station address automatically and saves it permanently when the soft starter's supply voltage is activated (see chapter Flow diagram: PROFIBUS DP starting the soft starter (Page 169)) or when the "Restart" command is issued. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 162: Configuring Soft Starters

    You configure the soft starter using the GSD file. The soft starter is integrated into your system as a standard slave by means of the GSD file. You can download the GSD file from the Internet (http://www.siemens.com/softstarter). The following GSD files are available: ●...

  • Page 163: Configuring With The Soft Starter Es Professional Software

    The default values are used for PS2 and PS3. 9.5.3 Configuring with the Soft Starter ES Professional software You can also configure SIRIUS 3RW44 soft starters using the Soft Starter ES Premium software. There are two possibilities when using PROFIBUS DP: ●...

  • Page 164: Profibus Dp Commissioning Using The Gsd File In Step 7 (Example)

    ● Configuration with STEP 7 using the GSD file ● Integration into the user program ● Switching on Components needed ● 3RW44 soft starter ● 3RW49 00-0KC00 communication module General requirements ● You have configured an infeed module with integrated S7 station, ●...

  • Page 165: Configuration Using The Device Master Data (Gsd) In Step 7

    Start the SIMATIC Manager and create a new project with a DP master (e.g. CPU315- 2 DP with DI 16 x DC 24 V and DO 16 x DC 24 V). Generate OB1 and OB82 for the project. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 166 During parameterization with the GSD file, it is possible to select values that are dependent on each other, but are not permissible in combination. The respective parameter is reported as an "Incorrect parameter value" in data set 92. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 167 Maximum starting time Greater than Starting time, chapter Specifying the startup mode (Page 63) Limiting torque Greater than Starting torque, chapter Specifying the startup mode (Page 63), torque control and torque control with current limiting. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 168: Integration Into The User Program

    Switch on the voltage supply for the soft starter. Observe the status LEDs on the DP master CPU315-2 DP: 5 V DC: Lights up SF DP: Off BUSF: Off Observe the status LEDs on the PROFIBUS module: LED BUS: Lights up green 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 169: Flow Diagram: Profibus Dp Starting The Soft Starter

    PROFIBUS DP communication module 9.6 PROFIBUS DP commissioning using the GSD file in STEP 7 (example) 9.6.5 Flow diagram: PROFIBUS DP starting the soft starter Figure 9-3 PROFIBUS DP starting of the soft starter 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 170: Process Data And Process Images

    Parameter set bit 0 Parameter set bit 1 Not used Not used Not used Disable quick stop Inputs DI-0. Ready (automatic) Motor ON Group fault Group warning Input 1 Input 2 Input 3 Input 4 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 171: Diagnosis Via Led Display

    Device not initialized and parameter error! (Send in device!) Device not exchanging data! Specifications Error: BF = bus fault Frequency specifications: Blinking: 0.5 Hz Flickering: 8 to 10 Hz *) Toggling: 2 to 10 Hz 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 172: Diagnosis With Step 7

    The following assumptions apply for this STEP 7 user program: ● Diagnostics address is 1022 (3FEH). ● Slave diagnostic data must be stored in DB82: from address 0.0, length 32 bytes. ● The slave diagnostic data has a length of 32 bytes. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 173: Structure Of The Slave Diagnostics

    The length of the diagnostics message frame varies between 13 and 32 bytes. The length of the diagnostics message frame last received can be seen in STEP 7 from the RET_VAL parameter of SFC 13. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 174: Station Status 1 To 3

    PG or another DP master. the DP slave at the moment). The "Master PROFIBUS address" diagnostic byte contains the station address of the DP master that assigned parameters to the DP slave. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 175 There are more diagnostics messages pending than the DP slave is able to store. • The DP master cannot enter all the diagnostics messages sent by the DP slave in • its diagnostics buffer (channel-specific diagnostics). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 176: Master Profibus Address

    Identifier-related diagnostic data indicates whether soft starters are faulty or not. Identifier- related diagnostics begins at byte 6 and is 2 bytes long. ID-related diagnostics Identifier-related diagnostics for soft starters is structured as follows: Figure 9-5 Configuration of identifier-related diagnostics 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 177: Module Status

    The module status starts after the identifier-related diagnostics and consists of 5 bytes. Structure of the module status The module status is structured as follows: Figure 9-6 Structure of the module status 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 178: Channel-Related Diagnostics

    Up to 9 channel-related diagnostics messages are possible (see also station status 3, bit 7). Channel-related diagnostics Channel-related diagnostics is configured as follows: Figure 9-7 Configuration of the channel-related diagnostics 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 179 Alarm bit is deleted when the cause of Electronics supply voltage too • No sensor or load voltage tripping has been eliminated or automatically acknowledged. No contact block supply • voltage No supply voltage • 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 180: Data Formats And Data Sets

    Data that is transferred from the soft starter and indicates the current operating status, e.g., Motor CCW, etc. Data format: Bit Diagnostics Data that is transferred from the soft starter and indicates the current operating status, e.g., Overload fault, etc. Data format: Bit 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 181 Current values are ● Motor current I (6-bit current format) ● Phase currents I (8-bit current format) L1max L2max L3max ● Last trigger current (9-bit current format) ● Maximum tripping current (9-bit current format) 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 182 I and in amperes [A] Data format: 2 byte, 9-bit current format Example: Set current I = 60 A Indicated motor current 455 % then corresponds to 60 A x 4.55 = 273 A 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 183 Both the measured maximum and minimum phase currents in bypass operation are stored per phase. ● Minimum and maximum phase-to-phase voltages U as RMS values in 0.1 V. Minimum and maximum line frequency in 0.5 Hz resolution. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 184: Identification Number (Id No.), Error Codes

    More information on this can be found in the online help of Soft Starter ES. Evaluation via PROFIBUS DP The error codes are output via PROFIBUS DP Layer 2. More information can be found in the relevant manuals for the PROFIBUS DP protocol description. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 185 • Device resources Temporary lack of resources in the No free receive buffer • device! The data set is currently being • updated The data set request is currently • active on another interface. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 186: Data Sets (Bs)

    Functions" (https://support.industry.siemens.com/cs/ww/en/view/1214574) ● in the STEP 7 online help Byte arrangements When data longer than one byte is stored, the bytes are arranged as follows ("big endian"): Figure 9-9 Byte arrangement in "big endian" format 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 187: Data Set 68 - Reading/Writing The Process Image Of The Outputs

    In the "Automatic mode", the PLC specifies the process image of the outputs. In this case, reading of data set 68 at the local device interface returns the process image of the outputs as transmitted by the PLC. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 188: Data Set 69 - Reading The Process Image Of The Inputs

    Motor current I act-bit0 1110 Motor current I act-bit1 1111 Motor current I act-bit2 1112 Motor current I act-bit3 1113 Motor current I act-bit4 1114 Motor current I act-bit5 1115 Manual mode local 1116 Ramp operation 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 189: Data Set 72 - Logbook - Reading Device Errors

    The following messages can be entered: ID No. Device fault - messages Heatsink - thermistor defective 1466 Contact 1 failed 1467 Contact 2 failed 1468 Contact 3 failed 1417 Bypass element defective 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 190: Data Set 73 - Logbook - Reading The Trips

    This data set can accommodate 21 entries. When all locations have been written, the first entry is overwritten again. Note The newest entry is entered at the end of the data set. The remaining entries are moved up one entry. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 191 No load 1409 Phase failure L1 1410 Phase failure L2 1411 Phase failure L3 1421 Impermissible I /CLASS setting 1479 Phase angle control failure 1481 System voltage too high 1482 Current measuring range overshot 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 192: Data Set 75 - Logbook - Reading Events

    This data set can accommodate 21 entries. When all locations have been written, the first entry is overwritten again. Note The newest entry is entered at the end of the data set. The remaining entries are moved up one entry. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 193 ID No. of incorrect parameter Parameters disabled CPU/master active ± (coming/going event) Factory settings restored + (coming event only) 1302 Logbook - trips deleted + (coming event only) 1303 Logbook - events deleted + (coming event only) 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 194: Data Set 81 - Reading The Basic Settings Of Data Set 131

    Alarm bit can only be deleted by switching the supply voltage on and off once the cause of the error has been eliminated. Emergency start active Alarm bit is deleted when emergency start is deactivated. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 195 Alarm bit is updated continually. Reserved = 0 Reserved = 0 Input control Device receives control commands via the inputs, alarm bit is updated continually. Asymmetry detected Asymmetry is present, alarm bit is updated continually. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 196 Quick stop active F26, F24 Tripping of the motor due to quick stop. Alarm bit is automatically deleted when the cause of the fault has been removed and acknowledged with "trip reset". Reserved = 0 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 197 Parameters Parameter assignment active Alarm bit is updated continually. Invalid parameter value Alarm bit is always deleted when acknowledged with "Trip Reset" or valid parameters have been received. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 198 1472 Inside-delta motor connection 1473 Motor connection type unknown 1408 No load Reserved = 0 1409 Phase failure L1 1410 Phase failure L2 1411 Phase failure L3 1412 Rotational direction of line frequency right 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 199 Manual mode local (redundant to bit 7.4) 1444 Manual mode local - input controls 1445 Manual mode local - HMI controls 1446 Manual mode local - PC controls Reserved = 0 Reserved = 0 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 200 Prewarning limit - remaining time for tripping undershot 1420 Prewarning limit - motor heating exceeded Reserved = 0 Reserved = 0 Reserved = 0 Reserved = 0 Reserved = 0 Reserved = 0 PROFIBUS DP error numbers 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 201: Data Set 93 - Writing A Command

    Initiate a restart (same as after power ON), e.g., after reassignment of the station address. Parameters disabled Parameterization by parameterizing master not possible, or its CPU/master ON parameters are ignored. Parameters disabled Parameterization by parameterizing master is possible. CPU/master OFF 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 202: Data Set 94 - Reading Measured Values

    Remaining time for tripping of 0 ... 10000 s / [0 ... 10000] thermal motor model 48 - 51 Output power 0 ... 2147483 W / 0.1 W [0 ... 21474830] 52 - 63 Reserved = 0 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 203: Data Set 95 - Reading Statistical Data

    0 ... 2 -1 s / [0 ... 2 Number of starts - output 4 0 ... 2 -1 s / [0 ... 2 Reserved = 0 Reserved = 0 Reserved = 0 Reserved = 0 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 204: Data Set 96 - Reading The Maximum Pointer

    0 ... 1500 V / [0 ... 15 000] 0.1 V NS max Maximum heatsink temperature 1 ... -40 °C/ [-40 ... 127] 1 °C Maximum contact block heating 0 ... 250 % / [0 ... 250] 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 205 -1 s [0 ... 2 119.9 x l Operating hours - motor current = 120 ... 1000 % x l Operating hours - device 0 ... 2 -1 s/ [0 ... 2 Reserved = 0 Reserved = 0 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 206: Data Set 100 - Reading The Device Identification

    62 - 77 Product order code 78 - 81 e.g. E001 Hardware version (byte 0 ... byte 3) 0x00 Ident number (byte 0) (3RW44) 0x00 Ident number (byte 1) (3RW44) 0x80 Ident number (byte 2) (3RW44) 0xDE Ident number (byte 3) (3RW44)

  • Page 207: Data Sets 131, 141, 151 - Technology Parameters 2: Reading/Writing Sets 1, 2, 3

    Data sets 131, 141, 151 - Technology parameters 2: Reading/writing sets 1, 2, 3 Byte Value Note Header Coordination 0x20 Writing via C1 channel (PLC) 0x30 Writing via C2 channel (PC) 0x40 Writing 0x40 via device interface (PC) 1 ... 3 Reserved = 0 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 208 25...26 Reserved = 0 Lower current limit 18.75 ... 100 % [6 ... 32] 3.125% Upper current limit 50 ... 150 % [16 ... 48] 3.125% 30...31 Reserved = 0 Reserved = 0 0...5 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 209 Starting voltage 20 ... 100 % [4 ... 20] Reserved = 0 Current limiting value 3.125 % 3RW44 2, 3, 4: 125 ... 550 % [4 • ... 176] 3RW44 5: 125 ... 500 % [40 ... 160] • 3RW44 6: 125 ... 450 % [40 ... 144] •...
  • Page 210 Motor CCW with PS3 [21] • Input 2 - (see Input 1 - action) Input 3 - (see Input 1 - action) Input 4 - (see Input 1 - action) 80...95 Reserved = 0 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 211 10 ... 100 % [2 ... 20] Reserved = 0 Reserved = 0 Motor thermal capacity 1 ... 100 % [1 ... 100] 126...129 Reserved = 0 Dynamic braking torque 20 ... 100 % [4 ... 20] 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 212: Data Sets 132, 142, 152 - Technology Parameters 3: Reading/Writing Sets 1, 2, 3

    500 ... 3 600 rpm [500 ... 3 600] 1 rpm 12 - 18 Reserved = 0 19 - 20 Rated torque 0 ... 65 535 Nm [0 ... 65 535] 1 Nm 21 - 63 Reserved = 0 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 213: Data Set 133 - Technology Parameters 4: Hmi Module

    10 ... 100 % [2 ... 20] Auto repeat time 10 ... 250 ms [2 ... 20] 5 ms HMI keys - activity monitoring time 0 ... 1800 s [0 ... 60] 30 s 16 - 19 Reserved = 0 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 214: Data Set 160 - Reading/Writing Communication Parameters

    6-11 Reserved = 0 Note 3RW44 soft starters signal the current baud rate while reading. During writing, the value entered is ignored, as the baud rate is always automatically detected by the soft starter. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 215: Data Set 165 - Reading/Writing Comments

    Value range [coding] parameters Header Coordination 0x20 Writing via C1 channel (PLC) 0x30 Writing via C2 channel (PC) 0x40 Writing 0x40 via device interface (PC) Reserved1 2 - 3 Reserved2 Comment 4 - 124 Comment data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 216: Typical Circuit Diagrams

    Typical circuit diagrams 10.1 Connection examples for main and control circuits 10.1.1 3RW44 in a standard circuit with control via keys 3RW44 in a standard circuit with control via keys Main circuit Control circuit Option 1a: Standard circuit with circuit breaker...
  • Page 217 SITOR fuse (purely semiconductor (conductor protection and semiconductor protection). protection). For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 218: 3Rw44 In A Standard Circuit With Line Contactor And Control Via Plc

    Typical circuit diagrams 10.1 Connection examples for main and control circuits 10.1.2 3RW44 in a standard circuit with line contactor and control via PLC Main circuit Control circuit Standard circuit with optional main Control of an optional main contactor and control via PLC...

  • Page 219: 3Rw44 In A Standard Circuit And Dc Braking Stopping Function For Device Types 3Rw44 22 To 3Rw44 25

    Typical circuit diagrams 10.1 Connection examples for main and control circuits 10.1.3 3RW44 in a standard circuit and DC braking stopping function for device types 3RW44 22 to 3RW44 25 Main circuit Control circuit For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259).

  • Page 220: 3Rw44 In A Standard Circuit And Dc Braking Stopping Function For Device Types 3Rw44 26 To 3Rw44 66

    Typical circuit diagrams 10.1 Connection examples for main and control circuits 10.1.4 3RW44 in a standard circuit and DC braking stopping function for device types 3RW44 26 to 3RW44 66 Main circuit Control circuit For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259).

  • Page 221: 3Rw44 In An Inside-Delta Circuit

    Typical circuit diagrams 10.1 Connection examples for main and control circuits 10.1.5 3RW44 in an inside-delta circuit Main circuit Control circuit Option 1a Option 1: control by PLC *(Optional line contactor if motor is to be switched potential-free) 3RW44 soft starters...
  • Page 222 This particularly applies if the motor protection has tripped. For safety reasons, you are advised to integrate the group fault output (terminals 95 and 96) in the controller. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 223: 3Rw44 In A Standard Circuit And Control Like A Contactor

    Typical circuit diagrams 10.1 Connection examples for main and control circuits 10.1.6 3RW44 in a standard circuit and control like a contactor Control circuit Main circuit For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259).

  • Page 224: 3Rw44 In A Standard Circuit With Soft Start/Stop And Additional Slow Speed Function In Both Directions Of Rotation With One Parameter Set

    10.1 Connection examples for main and control circuits 10.1.7 3RW44 in a standard circuit with soft start/stop and additional slow speed function in both directions of rotation with one parameter set For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259).
  • Page 225 This particularly applies if the motor protection has tripped. K1, K2, K3 = relays for contact multiplication, e.g. for 230 V AC operation: 3RS 1800-1BP00 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 226: Control Via @Profibus With Switchover To Manual Local Operation (E.g. On The Control Cabinet)

    10.1 Connection examples for main and control circuits 10.1.8 Control via @PROFIBUS with switchover to manual local operation (e.g. on the control cabinet) For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 227: 3Rw44 In A Standard Circuit And Reversing Operation Via Main Contactors With One Parameter Set Without Soft Stopping

    10.1 Connection examples for main and control circuits 10.1.9 3RW44 in a standard circuit and reversing operation via main contactors with one parameter set without soft stopping For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259).
  • Page 228 Typical circuit diagrams 10.1 Connection examples for main and control circuits Note The "Coasting down" coasting method must be set on the 3RW44. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 229: Reversing Operation With Soft Stopping

    Typical circuit diagrams 10.1 Connection examples for main and control circuits 10.1.10 Reversing operation with soft stopping For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 230: Soft Starter For Pole-Changing Motor With Separate Windings And 2 Parameter Sets

    10.1 Connection examples for main and control circuits 10.1.11 Soft starter for pole-changing motor with separate windings and 2 parameter sets For permissible main and control voltage values, refer to chapter Technical data (Page 253). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 231 Typical circuit diagrams 10.1 Connection examples for main and control circuits Note The "Coasting down" coasting method must be set on the 3RW44. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 232: Soft Starter For Dahlander Motors With 2 Parameter Sets

    10.1 Connection examples for main and control circuits 10.1.12 Soft starter for Dahlander motors with 2 parameter sets For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 233: Parallel Starting Of 3 Motors

    (Page 259). Note The rated output of the 3RW44 to be configured must be at least as high as the sum of the motor's rated outputs. The loads should have similar mass moments of inertia and torque curves.
  • Page 234 (Page 259). Note The rated output of the 3RW44 to be configured must be at least as high as the sum of the motor's rated outputs. The loads should have similar mass moments of inertia and torque curves.

  • Page 235: Soft Starter For Serial Starting With 3 Parameter Sets

    10.1 Connection examples for main and control circuits 10.1.14 Soft starter for serial starting with 3 parameter sets For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 236 Note The "Coasting down" coasting method must be set on the 3RW44. Note In the case of increased operating sequences, the 3RW44 should be dimensioned at least one capacity level higher than the highest connected motor output. 3RW44 soft starters...

  • Page 237: Soft Starter For Serial Starting With 3 Parameter Sets (Deactivate Soft Stop And 3Rw44 Motor Protection)

    For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259). Note In the case of increased operating sequences, the 3RW44 should be dimensioned at least one capacity level higher than the highest connected motor output. Note The "Coasting down"...

  • Page 238: Soft Starter For Activation Of A Motor With A Magnetic Fixing Brake

    10.1 Connection examples for main and control circuits 10.1.16 Soft starter for activation of a motor with a magnetic fixing brake For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 239: Safe Disconnection According To Iec 62061 (Sil) And/Or Iso 13849-1 (Pl)

    The 3RW soft starter is used for functional switching. Safe disconnection can also be realized, for example, with a 3SK1 safety relay and power contactors. The examples given in the FAQ (https://support.industry.siemens.com/cs/document/67474130) describe possible configurations based on various safety requirements. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 240: Soft Starter With Direct-On-Line Starting (Dol) As Emergency Start

    10.1 Connection examples for main and control circuits 10.1.18 Soft starter with direct-on-line starting (DOL) as emergency start For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 241: Soft Starter With Star-Delta Starter As Emergency Start (3Rw44 In A Standard Circuit)

    Typical circuit diagrams 10.1 Connection examples for main and control circuits 10.1.19 Soft starter with star-delta starter as emergency start (3RW44 in a standard circuit) For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259).

  • Page 242: Soft Starter And Frequency Converter On One Motor

    10.1 Connection examples for main and control circuits 10.1.20 Soft starter and frequency converter on one motor For permissible main and control voltage values, refer to chapter Technical data of the power unit (Page 259). 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 243: General Technical Data

    Remaining time for tripping Standard display off Menu: status display Device status Active parameter set Parameter set 1 Parameter set 2 Parameter set 3 Type of connection Unknown/defective Wye / delta Inside-delta Direction of rotation Unknown 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 244 Device fault Power on Ready to start Output 2 - action [...] Output 3 - action [...] Output 4 - action [...] Article number Firmware information Version Date Only possible in combination with slow speed 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 245 50 % Slow speed Slow speed factor CW parameters Slow torque CW 50 % Slow speed factor Slow torque CCW 50 % Current limits Lower current limit 18.75 % Upper current limit 112.50 % 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 246 ON time Command motor On DC braking contactor Group warning Group fault Bus fault Device fault Power on Ready to start Output 2 - action [...] No action Output 3 - action [...] No action 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 247 Idle time Recovery time 60 s Protection against voltage failure Temperature sensor Deactivated Thermoclick PTC type A Display Language English Deutsch Français Español Italiano Português Nederlands Ελληνικά Türkçe Русский 中文 Contrast 50 % 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 248 Overload - contact Tripping without restart block Tripping with restart Asymmetry Warning Tripping Ground fault Warning Tripping Name Name Fieldbus Fieldbus interface Group diagnostics Disable Enable Response to Substitute value CPU/master STOP Last value Station address 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 249 Execute control function Motor CW Motor CCW Slow speed Emergency start Output 1 Output 2 Control via inputs Control inputs Activate Deactivate Standard control Automatic/None Inputs Keys Only possible in combination with slow speed 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 250 UL3 - L1 max (rms) Maximum operating current I Maximum operating current I (rms) Number of overload trips Minimum line frequency Maximum line frequency Max. heat sink temperature Max. contact block heating Reset maximum pointer 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 251 Number of starts output 2 Number of starts output 3 Number of starts output 4 Menu: Safety Factory settings Customer settings Enter user code 1000 User level Customer read only (> 1000) Customer write (1000) 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 252: Transport And Storage Conditions

    The following information applies to modules transported and stored in the original packaging. Type of condition Permissible range Temperature -25°C to +80°C Atmospheric pressure 700 to 1060 hPa Relative humidity 10 to 95 % 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 253: Technical Data

    3RW44 24-x 3RW44 25-x 3RW44 26-x 3RW44 27-x 400 ... 690 29 18.5 3RW44 22-x 18.5 3RW44 23-x 3RW44 24-x 3RW44 25-x 3RW44 26-x 3RW44 27-x 1 = screw-type terminals, 3 = spring-loaded terminals 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 254 3RW44 55-x 3RW44 56-x 3RW44 57-x 3RW44 58-x 1076 1100 3RW44 65-x 1214 1076 1200 3RW44 66-x 2 = screw-type terminals, 6 = spring-loaded terminals 3 = 115 V AC, 4 = 230 V AC 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 255 3RW44 57-x 1000 3RW44 58-x 1076 1100 1100 3RW44 65-x 1214 1200 1076 1200 3RW44 66-x 2 = screw-type terminals, 6 = spring-loaded terminals 3 = 115 V AC, 4 = 230 V AC 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 256 3RW44 23-x 3RW44 24-x 3RW44 25-x 3RW44 26-x 3RW44 27-x 400 ... 600 50 3RW44 22-x 3RW44 23-x 3RW44 24-x 3RW44 25-x 3RW44 26-x 3RW44 27-x 1 = screw-type terminals, 3 = spring-loaded terminals 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 257 1864 1100 1350 1680 1500 1900 3RW44 65-x 2103 1200 1500 1864 1700 2100 3RW44 66-x 2 = screw-type terminals, 6 = spring-loaded terminals 3 = 115 V AC, 4 = 230 V AC 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 258 For dimensioning soft starters under other supplementary conditions, also for heavy starting up to CLASS 30, we recommend our Simulation Tool for Soft Starters (STS): https://support.industry.siemens.com/cs/ww/en/view/101494917 or our Technical Assistance: Tel.: +49 (0) 911-895-5900, e-mail: technical-assistance@siemens.com 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 259: Technical Data Of The Power Unit

    General technical data 11.3 Technical data 11.3.2 Technical data of the power unit 3RW44..-.BC.4 3RW44..-.BC.5 3RW44..-.BC.6 Rated insulation voltage U 460 V 600 V 690 V Rate impulse voltage U 6 kV 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 260 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 261 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 262 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 263 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 264: Technical Data Of The Control Section

    General technical data 11.3 Technical data 11.3.3 Technical data of the control section 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 265 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 266 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 267 Response value 3.4 kOhm to 3.8 kOhm Return value 1.5 kOhm - 1.65 kOhm Cable lengths (single), conductor cross sections: Cross section: Length: 2.5 mm 250 m 1.5 mm 150 m 0.5 mm 50 m 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 268: Conductor Cross-Sections

    General technical data 11.3 Technical data 11.3.4 Conductor cross-sections 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 269: Electromagnetic Compatibility

    3RA1 fuseless load feeder can resume operation without feeders, the circuit breaker itself always achieves type 2 needing to be renewed. At most, welding of the contactor coordination. contacts is permissible if they can be disconnected easily without any significant deformation. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 270: Feeder Component Layout (Standard Circuit)

    Normally, fuseless mounting (combination of motor starter protector and soft starter) is sufficient. If type of coordination 2 is to be fulfilled, semiconductor fuses must be fitted in the motor feeder. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 271 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 272 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 273 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 274 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 275: Feeder Component Layout (Inside-Delta Circuit)

    Feeder component layout (inside-delta circuit) Note If the F3 semiconductor fuse is not used, the type of coordination "2" is reduced to type of coordination "1" for soft starters in combination with the stipulated protective device. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 276 General technical data 11.3 Technical data 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 277: Accessories

    Optional accessories USB PC cable 3UF7941-0AA00-0 For connecting to the USB interface of a PC/PG, for communication with Soft Starter ES through the system interface 3UF7941-0AA00-0 Optional communication module for SIRIUS 3RW44 3RW4900-0KC00 PROFIBUS • 3RW4900-0NC00 PROFINET • 3RW44 soft starters...
  • Page 278 IP54 degree of protection (e.g. in the control cabinet door) 3RW4900-0AC00 Connecting cable From the device interface (serial) of the 3RW44 soft starter to the external display and operator module Length 0.5 m, flat 3UF7932-0AA00-0 Length 0.5 m, round...
  • Page 279 Also fits on mounted box 3RT1966-4EA1 terminals SIRIUS 3RW44 Soft Starter Manual The SIRIUS 3RW44 Soft Starter Manual (https://support.industry.siemens.com/cs/ww/en/view /21772518) is available at the Industry Online Support portal as a free PDF download. The SIRIUS 3RW442/443/444/445/446 soft starter operating instructions (https://support.industry.siemens.com/cs/ww/en/view/21189750) (article number 3ZX1012-...

  • Page 280: Spare Parts

    General technical data 11.3 Technical data 11.3.9 Spare parts Note 3RW4422 and 3RW4423 The 3RW4422 and 3RW4423 soft starters do not need fans. These devices are adequately designed for natural convection. 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 281: Tripping Characteristics

    General technical data 11.4 Tripping characteristics 11.4 Tripping characteristics 11.4.1 Motor protection tripping characteristics: 3RW44 with symmetry 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 282: Motor Protection Tripping Characteristics: 3Rw44 With Asymmetry

    General technical data 11.4 Tripping characteristics 11.4.2 Motor protection tripping characteristics: 3RW44 with asymmetry 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 283: Dimension Drawings

    General technical data 11.5 Dimension drawings 11.5 Dimension drawings 11.5.1 Dimension drawings Figure 11-1 3RW44 2, 3RW44 3, 3RW44 4 3RW44 2 3RW44 3 3RW44 4 180 mm (7.09 in) 180 mm (7.09 in) 210 mm (8.27 in) 170 mm (6.69 in) 170 mm (6.69 in)
  • Page 284 General technical data 11.5 Dimension drawings Figure 11-2 3RW44 5/3RW44 6 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 285 249 mm (9.8 in) 249 mm (9.8 in) 162 mm (6.4 in) 162 mm (6.4 in) 152 mm (5.9 in) 151.4 mm (5.96 in) 123 mm (4.84 in) 290 mm 290 mm Weight 50.0 kg 78.0 kg 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 286 173 mm (6.9 in) 173 mm (6.8 in) 195 mm (7.7 in) 118 mm (4.6 in) 118 mm (4.65 in) 261 mm (10.2 in) 261 mm (10.28 in) 290 mm (11.5 in) 290 mm (11.42 in) 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 287 General technical data 11.5 Dimension drawings Figure 11-4 External display and operator module 3RW49 00-0AC00 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 288: Appendix

    Appendix Configuration data Siemens AG Technical Support Low-Voltage Control Systems Tel.: +49 (0) 911-895-5900 Fax: +49 (0) 911-895-5907 E-mail: technical-assistance@siemens.com 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 289 Rated torque or rated output Nm or kW Mass moment of inertia (load-specific) kg*m Mass moment of inertia (motor-specific) kg*m Speed/torque characteristic curve (The speed increments of the value pairs do not have to be equal) "n " 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 290 Acceleration torque limitation? ❑ ....Maximum starting time? ❑ ....4. Personal details Last name, first name: ......................Company: ..........................Department: .......................... Street: ........................... Zip code, town/city: ....................... Country: ..........................Phone: ..........................Fax: ............................E-mail: ..........................3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...

  • Page 291: Index

    Degree of protection, 30 Parameter sets, 119 Diagnostics, 140 PC Interface, 20 Disconnector, 32 Phase failure, 142 Dynamic braking torque, 131 PLC, 32, 146, 146, 183, 187, 187, 198 Prewarning limit, 137 Profibus, 47 3RW44 soft starters Manual, 03/2017, NEB535219502000/RS-AB/008...
  • Page 292 Selection criteria, 17 Semiconductor fuse, 40, 139 SITOR, 40, 139 SITOR fuses, 40 SITOR semiconductor fuse, 139 Size 3RW44 2., 42 3RW44 3., 43 3RW44 4., 43 Slow speed factor, 134 Slow speed torque, 134 Software, 20, 47 Spring-loaded connections, 42...

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