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Siemens SIMATIC EM 148-FC Manual

Frequency converter
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SIMATIC
EM 148-FC
Frequency Converter
Manual
The following supplement is part of this documentation:
No.
Product Information
1
Product information
This manual is part of the documentation
package with the order number
6ES7198-8FA01-8BA0
Edition 04/2003
A5E00065321-03
Drawing number
Edition
A5E00476687-03
07/2007
Preface, Contents
Product Overview
Wiring
Commissioning and Diagnostics
Functions and
Technical Specifications
Mode of Functioning
Appendices
Order Numbers
Dimensioned Drawing
Index
1
2
3
4
5
A
B

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Summary of Contents for Siemens SIMATIC EM 148-FC

  • Page 1 SIMATIC Preface, Contents EM 148-FC Product Overview Frequency Converter Wiring Manual Commissioning and Diagnostics Functions and The following supplement is part of this documentation: Technical Specifications Product Information Drawing number Edition Mode of Functioning Product information A5E00476687-03 07/2007 Appendices Order Numbers Dimensioned Drawing Index This manual is part of the documentation...
  • Page 2 Trademarks SIMATIC, SIMATIC HMI and SIMATIC NET are registered trademarks of SIEMENS AG. Third parties using for their own purposes any other names in this document which refer to trademarks might infringe upon the rights of the trademark owners.
  • Page 3 Preface Purpose of the manual This manual supplements the ET 200X Distributed I/O Device manual. It describes the functions of the EM 148-FC frequency converter. The manual doesn’t describe any functions relating to the ET 200X itself. You can find descriptions of these in the ET 200X Distributed I/O Device manual.
  • Page 4 Certification, recognition, approval The EM 148-FC frequency converter has the following certification: CSA certification: Underwriters Laboratories Inc. in accordance with S UL 508 (Industrial Control Equipment) S CSA C22.2 No. 142 (Process Control Equipment) CE marking The EM 148-FC frequency converter fulfills the requirements and protection objectives of the following EC directives: S 73/23/EEC (low-voltage directive) S 89/336/EEC (EMC directive)
  • Page 5 Preface Position in the information landscape This delivery package (order number: 6ES7 198-8FA01-8BA0) consists of 4 manuals with the following contents: BM 147/CPU ET 200X EM300 EM 148-FC Basic Module Distributed I/O Device Motor Starter Frequency Converter Addressing Installation and wiring Wiring Wiring ET 200X with...
  • Page 6 Additional support If you have any questions on how to use the products described in the manual that are not answered here, please get in touch with your Siemens representative or office. http://www.ad.siemens.de/partner...
  • Page 7 Loc. time: 0:00 to 24:00 / 365 days a year Phone: +49 (0) 180 5050-222 Fax: +49 (0) 180 5050-223 E-mail: adsupport@ siemens.com GMT: +1:00 Europe/Africa (Nuremberg) United States (Johnson City) Asia/Australia (Beijing) Authorization Technical support and Technical support and...
  • Page 8 Service & support on the Internet In addition to our documentation, we also make all our knowledge available online on the Internet. http://www.ad.siemens.de/support There you will find: S The newsletter, which keeps you up to date with all the latest information on your products S The documents you require (by using the service &...

  • Page 9: Table Of Contents

    Contents Preface Product Overview What is the Frequency Converter? ....... . . Conditions for use .
  • Page 10 Contents Figures Connectors and indicators of the EM 148-FC frequency converter ..Power connectors ..........Schematic representation of the connections of the EM 148-FC (example) .

  • Page 11: Product Overview

    Product Overview This chapter sets out the advantages of the Frequency Converter frequency converter. It also tells you how to find the information you need in the manuals of the ET 200X distributed I/O device. In this chapter Section Contents Page What is the Frequency Converter? Conditions for use...

  • Page 12: What Is The Frequency Converter

    Product Overview What is the Frequency Converter? Frequency converters are used in drive engineering to control the operating speed of motors. Features of the Frequency Converter S Control of asynchronous three-phase induction motors of 0.1 to 1.5 kW with a rated voltage up to 500 VAC S Output frequency up to 300 Hz for applications with a high operating speed S Ramping up and down...

  • Page 13: Connectors And Indicators Of The Em 148-Fc Frequency Converter

    Product Overview View The figure below shows you the connectors and indicators of the Frequency Converter frequency converter. Earthing screw LEDs To indicate: SF: Fault status STAT: Status PWR: Power supply (3 x 400 VAC) Subminiature D female X2 power socket connector Connector for: “local”...

  • Page 14: Conditions For Use

    Product Overview Conditions for use The Frequency Converter can be used in the ET 200X distributed I/O device with the following basic modules: S BM 141 DI 8 DC 24V, 6ES7 141-1BF11/1BF12-0XB0 as of version 1 S BM 142 DO 4 DC 24V/2A, 6ES7 142 1BD21/1BD22-0XB0 as of version 1 S BM 141 DI 8 DC 24V ECOFAST, 6ES7 141-1BF00/1BF01-0AB0 as of version 1 S BM 141 DI 8 DC 24V ECOFAST DIAG, 6ES7 141-1BF40-0AB0...
  • Page 15 Product Overview Table 1-1 Topics of the manuals in the ET 200X manual package, continued Manual ET 200X BM 147/C EM 300 EM 148-FC Chapter/ Contents Distributed PU Basic Motor Frequency Appen- I/O Device Module Starter Converter Wiring frequency converters The ET 200X with the BM 147/CPU on the PROFIBUS network Commissioning and diagnostics of the...

  • Page 16: Separate Manuals For The Et 200X Components

    Product Overview Table 1-1 Topics of the manuals in the ET 200X manual package, continued Manual ET 200X BM 147/C EM 300 EM 148-FC Chapter/ Contents Distributed PU Basic Motor Frequency Appen- I/O Device Module Starter Converter Execution times of SFCs Glossary Glossary Table 1-2...

  • Page 17: Wiring

    Wiring In this chapter you find out how to wire the frequency converter and which wiring rules you must comply with. In this chapter Section Contents Page Wiring rules Wiring the Frequency Converter EM 148-FC Frequency Converter A5E00065321-03...

  • Page 18: Wiring Rules

    Wiring Wiring rules Warning This device generates dangerous electrical voltages and controls dangerous rotating mechanical parts. Correct handling, installation, operation and maintenance of the device are vital to ensure effective and safe operation. For safety reasons you must connect all screw-type connectors with the ground symbol to protective ground.
  • Page 19 Wiring Selecting the connecting cables The core cross-section of the connecting cables for the three outer cables must be adapted to the prevailing environmental conditions. The core cross-section depends on the following: S The aggregate current of all the looped-through loads S The method of cable-laying S The ambient temperature S The material type (PVC, rubber) of the motor connecting cable...

  • Page 20: Wiring The Frequency Converter

    Wiring Wiring the Frequency Converter 2.2.1 Preparing the connecting cables Accessories To prepare the connecting cables for the frequency converter, you will need a crimping tool as well as the accessories listed in the table below. Alternatively, you can obtain ready-prepared motor connecting cables and power connecting cables (see Appendix A).

  • Page 21: Wiring The Power Connections

    Wiring 2.2.2 Wiring the power connections Pin assignment The figure below shows the power connectors of the Frequency Converter. The pin assignment can be found in the table below. Connector X1 Socket X2 Socket X3 Figure 2-1 Power connectors The pin assignment complies with the DESINA specification. Table 2-2 Assignment of the power connectors Connector X1...

  • Page 22: Schematic Representation Of The Connections Of The Em 148-Fc (Example)

    Wiring Terminal assignment diagram Schematic representation of the connections of the EM 148-FC (example) EM 148-FC Filter Electronic compo- nents Brake Motor * Only the pins used in the example are shown Figure 2-2 Schematic representation of the connections of the EM 148-FC (example) EM 148-FC Frequency Converter A5E00065321-03...

  • Page 23: Electrical Configuration

    Wiring 2.2.3 Electrical configuration Power supply To ensure the supply of the Frequency Converter both the supply voltage for the electronic components and sensors and the load voltage (possibly using a power module) must be connected to the basic module. Galvanic isolation Warning Please note that, if the motor is not controlled, it remains electrically connected to...
  • Page 24 Wiring External brake control The output for controlling the brake is switched 2 ways by a relay. The output voltage is identical to the input voltage. When selecting the brake, care must be taken to ensure the appropriate level of voltage endurance. All the terminals must be fed via the shielded motor connecting cable.

  • Page 25: Commissioning And Diagnostics

    Commissioning and Diagnostics In this chapter Section Contents Page Configuration Parameter assignment Commissioning after a lengthy storage period Unusual operating conditions Status indication by means of LEDs Frequency Converter diagnosis using STEP 5 or STEP 7 EM 148-FC Frequency Converter A5E00065321-03...

  • Page 26: Configuration

    The current DDB files of the basic modules specified in section 1.2 are required. You can download the DDB file: – On the Internet at http://www.ad.siemens.de/csi_e/gsd Configuration with STEP 7 Proceed as follows: 1. Configure an ET 200X with the desired basic module (e.g.
  • Page 27 Commissioning and Diagnostics Note If you reparameterize the EM 148-FC during operation, the motor is switched off. This also means that Reaction to CPU-/Master-STOP is changed. Result: After you have parameterized Ramp down, Keep last value, or Rapid stop, the motor is still switched off. A connected motor with a brake will stop abruptly! What to do: To prevent this happening, make sure that you only transfer parameters that have been changed to the module once the motor has been...

  • Page 28: Commissioning After A Lengthy Storage Period

    Commissioning and Diagnostics Commissioning after a lengthy storage period Caution If the Frequency Converter is not used for some time, the capacitors in the intermediate circuit can become conductive. At the rated voltage this can cause irreparable damage to the Frequency Converter. To avoid this happening, the capacitors must be reformed.

  • Page 29: Unusual Operating Conditions

    Commissioning and Diagnostics Unusual operating conditions Operation under conditions such as the following can lead to an increased thermal load on the frequency converter: S High pulse frequency (16 kHz) S Increased supply voltage (500 V) S Low motor frequency (operating speed) S Increased ambient temperature S Constant steep ramping If a number of these conditions are combined, the frequency converter heats up...

  • Page 30: Status Indication By Means Of Leds

    Commissioning and Diagnostics Status indication by means of LEDs The Frequency Converter frequency converter has three LEDs for indicating statuses and fault statuses. Warning The LEDs are electronically controlled. If there is no voltage supplied to the electronic components and sensors, the LEDs do not light up. However, the power unit might still be receiving power.

  • Page 31: Frequency Converter Diagnosis With Step 5 Or Step

    Commissioning and Diagnostics Frequency Converter diagnosis with STEP 5 or STEP 7 Slave diagnosis The slave diagnosis complies with IEC 61784-1:2002 Ed1 CP 3/1. It can be read out using STEP 5 or STEP 7 for all DP slaves that comply with the standard, depending on the DP master.

  • Page 32: Structure Of The Station Diagnosis (Header), Bytes 9 To 12

    Commissioning and Diagnostics Diagnosis, bytes 0 to 8 See section 5.6.2 of the ET 200X Distributed I/O Device manual. Station diagnosis, bytes 9 to 12 Bit no. Byte 9 Length of the station diagnosis incl. header Header for station diagnosis : Code for S7 diagnostic interrupt Byte 10 “Slot”...

  • Page 33: Structure Of The Station Diagnosis (Record 1), Bytes 17 To 28

    Commissioning and Diagnostics Bit no. : Channel type: frequency converter Byte 17 : Length of the channel-specific diagnosis Byte 18 : Number of channels Byte 19 Byte 20 Diagnostic event on channel 0 of the module Byte 21 Undervoltage (see note below) Overvoltage Overload Bytes 22...

  • Page 34: Error Messages In Accordance With The Profibus Standard

    Commissioning and Diagnostics Channel-specific error messages You can find more information on the channel-specific diagnosis in Chapter 5 of the ET 200X Distributed I/O Device manual. Table 3-4 Error messages in accordance with the PROFIBUS standard Error number Error text Meaning/possible causes Remedy 00010...

  • Page 35: Functions And Technical Specifications

    Functions and Technical Specifications In this chapter Section Contents Page Cyclic data traffic Parameters Inching mode 4-17 Technical specifications 4-20 EM 148-FC Frequency Converter A5E00065321-03...

  • Page 36: Cyclic Data Traffic

    Functions and Technical Specifications Cyclic data traffic There are 4 bytes of user data available for sending and 4 bytes for receiving. Direct access to the module is only possible in SIMATIC S7 with double word commands. Note the access sequence of each DP master in SIMATIC S5. You can find the structure of the output data sent to the Frequency Converter and the structure of the input data received by it in the following sections.

  • Page 37: Structure Of The Control Word

    Functions and Technical Specifications Table 4-2 Structure of the control word Description Value Remarks AUS1 Ramp down to standstill via the parameterized ramp Operating Ready for operation, wait for the switch-on condition command AUS2 Voltage disconnection: The motor comes slowly to a standstill without external braking, starting lockout If there is external braking, the brake is activated immediately, starting lockout...

  • Page 38: Input Data Object (Feedback Interface)

    Functions and Technical Specifications Table 4-2 Structure of the control word, continued Description Value Remarks No inching to the Terminate inching mode to the left left Inching to the left Start inching mode to the left (see Section 4.3) Process data Control word and setpoint value of master invalid invalid (except control bits 1 and 2)
  • Page 39 Functions and Technical Specifications Table 4-4 Structure of the status word, Fortsetzung Description Value Remarks Operation disabled See control word, bit 3 Operation enabled No problems Acknowledgment Acknowledgment is required before a restart required following an error (see Section 4.1.3) Control bit 1 = 0 Not ready for operation (AUS2) Control bit 1 = 1...

  • Page 40: Error Acknowledgment

    Functions and Technical Specifications 4.1.3 Error acknowledgment 1. If an error occurs, the drive is put out of operation. 2. After the cause of the error has been detected and eliminated (see Section 3.6), the error must be acknowledged through a rising edge of control bit 7. 3.

  • Page 41: Parameters

    Functions and Technical Specifications Parameters 4.2.1 Parameters of the Frequency Converter The parameter names listed in bold in the tables are explained in further detail in Section 4.2.2. Table 4-5 Parameters of the Frequency Converter Parameters Possible settings Parameter values via Default DDB file Reaction to...
  • Page 42 Functions and Technical Specifications Table 4-5 Parameters of the Frequency Converter, continued Parameters Possible settings Parameter values via Default DDB file Pulse frequency 2 kHz 4 kHz 4 kHz 8 kHz 16 kHz Maximum motor 20 Hz 120 Hz 220 Hz 50 Hz frequency 40 Hz...

  • Page 43: Meaning Of The Parameters

    Functions and Technical Specifications Table 4-5 Parameters of the Frequency Converter, continued Parameters Possible settings Parameter values via Default DDB file Smoothing None (0 s) None Slight (8 s) Medium (22 s) Strong (40 s) Counterclockwise Disable Enable rotation Enable 4.2.2 Meaning of the parameters Reaction to CPU-/master-STOP...
  • Page 44 Functions and Technical Specifications Thermistor monitoring of motor This parameter defines how the motor temperature is monitored. S Thermistor monitoring of motor Disable: The motor temperature is obtained by calculation by means of the I procedure. If a thermistor is connected, it has no effect. S Thermistor monitoring of motor Enable: A thermistor must be connected and is evaluated.

  • Page 45: Linear And Quadratic Voltage/Frequency Characteristic

    Functions and Technical Specifications Control mode This parameter determines the relationship between the frequency output by the frequency converter and the voltage. S Linear voltage/frequency characteristic: Linear voltage rise from the minimum voltage when f = 0 to the rated voltage at the rated frequency of the motor.
  • Page 46 Functions and Technical Specifications Ramp-up time This parameter controls the acceleration of the motor. The motor accelerates from the minimum to the maximum parameterized motor frequency in the time specified. Note If the ramp-up time set is too short, this can result in the converter switching off due to excess current.

  • Page 47: Frequency Curve With Release Delay

    Functions and Technical Specifications External brake control This parameter defines the behavior of the braking relay. S Disable: The braking relay always remains released. If there is an external brake nevertheless, it blocks continuously. The External brake release delay and External brake stopping time parameters are ignored.

  • Page 48: Frequency Curve With External Brake Stopping Time

    Functions and Technical Specifications External brake stopping time After the motor has ramped down, the braking relay is switched off for the time set here, and the frequency converter is then operated with the minimum motor frequency. Switch off setpoint External brake stopping time Brake Figure 4-3...

  • Page 49: Voltage/Frequency Characteristic With And Without Starting Boost

    Functions and Technical Specifications Starting boost This parameter controls the voltage/frequency characteristic of the frequency converter. When the motor starts, the motor voltage is increased until the motor current exceeds the motor’s rated current by the value specified here. Consequently, a higher ramp-up torque can be achieved. Starting boost Figure 4-4 Voltage/frequency characteristic with and without starting boost...

  • Page 50: Frequency Curve With And Without Rounding

    Functions and Technical Specifications Smoothing This parameter controls the frequency curve when the motor ramps up and down. This ensures a smooth run, which is important for textile processing or conveyor systems, for example. The ramp-up and ramp-down times increase by the smoothing time specified here.

  • Page 51: Inching Mode

    Functions and Technical Specifications Inching mode Inching mode allows you to turn the motor at low operating speeds. It can be controlled in the following ways: S By means of control bits from the programmable controller S By means of keys on the hand-held controller 4.3.1 Inching mode from the programmable controller Prerequisites...

  • Page 52: Inching Mode Using The Hand-Held Controller

    Functions and Technical Specifications 4.3.2 Inching mode using the hand-held controller Prerequisites The “local” operating mode (manual operation) must be set for inching mode using the hand-held controller. To do this, proceed as follows: 1. In case you haven’t already done it, connect the hand-held controller to the “local”...
  • Page 53 Functions and Technical Specifications Terminating manual operation To terminate manual operation, press the “remote” key on the hand-held controller. Warning If control bits 0 to 6 and 10 are set (e. g. control word 047F ) when you terminate manual operation, the motor will automatically ramp up to the setpoint frequency. This happens, for example, if the motor was running when you switched to manual operation.

  • Page 54: Technical Specifications

    Functions and Technical Specifications Technical specifications 55 °C 40 °C Dimensions and weight Max. continuous output current, depending on Dimensions 120 x 265 x 181 the pulse frequency W x H x D (mm) At 2 kHz and 4 kHz 2.1 A 3.8 A Weight...
  • Page 55 Functions and Technical Specifications Control of the outputs Motor selection data Control/operating mode Voltage/frequency Rated power of motor at /four quadrants 3 x 400 VAC In accordance with Max. 1.5 kW Output frequency 0 Hz to 300 Hz Max. 2 hp Resolution 0.01 Hz In accordance with...
  • Page 56 Functions and Technical Specifications EM 148-FC Frequency Converter 4-22 A5E00065321-03...

  • Page 57: Mode Of Functioning

    Mode of Functioning In this chapter you will find out what steps to take following voltage recovery and what to do to produce certain reactions in the frequency converter. In this chapter Section Contents Page Operating procedure following voltage recovery Changing the motor’s direction of rotation Applications EM 148-FC Frequency Converter...

  • Page 58: Operating Procedure Following Voltage Recovery

    Mode of Functioning Operating procedure following voltage recovery Only at initial commissioning or reparameterization: Configure and parameterize the Frequency Converter Set permissives: Ctrl. word = 0000 1100 0111 0110 Specify setpoint value for motor frequency St. word = 0000 1011 0011 x001 St.

  • Page 59: Changing The Motor's Direction Of Rotation

    Mode of Functioning Changing the motor’s direction of rotation If you want to change the motor’s direction of rotation, proceed as follows (to change from right to left, for example): Set control bits for the change of direction Ctrl. bit 11 = 0, ctrl. bit 12 = 1 Motor frequency setpoint value = 0 Motor frequency actual value = 0?

  • Page 60: Applications

    Mode of Functioning Applications The sequences required in different applications are explained in the status diagrams below. In these diagrams the effect of the external brake is represented by the statuses “0” and “1”. Table 5-1 Effect of the external brake Indication in diagram State of the braking relay Effect of the external...

  • Page 61: Abrupt Braking Of The Motor, Renewed Ramping Up

    Mode of Functioning Abrupt braking of the motor, renewed ramping up Control bits AUS2 Bit 1 AUS1 Bit 0 setpoint Brake Figure 5-4 Abrupt braking of the motor, renewed ramping up The frequency converter is switched off immediately. The motor is stopped by the external brake.

  • Page 62: Disabling And Re-Enabling Operation

    Mode of Functioning Disabling and re-enabling operation Control bits Disable operation Enable operation Bit 3 setpoint Brake Figure 5-5 Disabling and re-enabling operation The frequency converter is switched off immediately. The motor is stopped by the external brake. If there isn’t an external brake, the motor will stop of its own accord.

  • Page 63: Rapid Stop, Ramp-Up

    Mode of Functioning Rapid stop, ramp-up Control bits AUS3 Bit 2 AUS1 Bit 0 setpoint Parameterized ramp-down time Brake Figure 5-6 Rapid stop, ramp-up The motor is stopped by means of a steeper ramp based on half the parameterized ramp-down time. The AUS3 command has a higher priority than AUS1.

  • Page 64: Disabling And Re-Enabling The Ramp Generator

    Mode of Functioning Disabling and re-enabling the ramp generator Disable ramp Enable ramp Control bits generator generator Bit 4 setpoint Brake Figure 5-7 Disabling and re-enabling the ramp generator The motor is stopped by means of the parameterized ramp. In contrast to the AUS1 command (see above), the external brake is not activated. The motor output is not disconnected.

  • Page 65: Disabling And Re-Enabling The Setpoint Value

    Mode of Functioning Disabling and re-enabling the setpoint value Control bits Disable setpoint value Enable setpoint value Bit 6 setpoint Brake Figure 5-9 Disabling and re-enabling the setpoint value Change of direction Control bits Clockwise rotation Bit 11 Counterclockwise rotation No counterclockwise rotation Bit 12 setpoint...
  • Page 66 Mode of Functioning EM 148-FC Frequency Converter 5-10 A5E00065321-03...

  • Page 67: Order Numbers

    Order Numbers Below you will find the order numbers of the Frequency Converter frequency converter and the accessories you may require to use it. Frequency converter Table A-1 Frequency converter – order numbers Description Order no. Frequency Converter frequency converter 6ES7148-1FA10-0XB0 Accessories Table A-2...
  • Page 68 Order Numbers Table A-2 Accessories – order numbers, continued Description Order no. Connector set for motor connection: shielded connector housing with PG 16, pin insert and 8 contact pins – 2.5 / 0.75 mm 6ES7194-1AB01-0XA0 Cable for motor connecting cable PSLC11Y-J 4x2.5 + 2x(2x0.75) / StC 493722 (vendor: Alcatel) EM 148-FC Frequency Converter...

  • Page 69: B Dimensioned Drawing1

    Dimensioned Drawing Below you will find the dimensioned drawing of the Frequency Converter frequency converter. The total height and depth specified is increased by the length of the heavy-gauge threaded joint, the height of the connector housing and the bending radius of the cables used.
  • Page 70 Dimensioned Drawing EM 148-FC Frequency Converter A5E00065321-03...

  • Page 71: Index

    Index Applications, 5-4 Feedback interface, 4-4 Frequency suppression, 4-10 Braking, the motor, 5-5 Galvanic isolation, 2-7 Grounding, 2-7 Guide, 1-4 Change, 5-9 Changing the motor’s direction of rotation, 5-3 Commissioning, 3-4 Conditions for use, 1-4 Inching frequency, 4-11 Configuration, 3-2 Inching mode, 4-17 Continuous boost, 4-15 Input data object, structure, 4-4...
  • Page 72 Ramp generator, disabling/enabling, 5-8 Thermistor monitoring of motor, 4-10 Ramp-down time, 4-12 Ramp-up time, 4-12 Rapid stop, 5-7 Release delay, external brake, 4-13 Voltage recovery, 5-2 Reparameterization, during operation, 3-2 Rules, wiring, 2-2 Wiring EM 148-FC frequency converter, 2-1, 2-4 Smoothing, 4-16 power connections, 2-5 Starting boost, 4-15...
  • Page 73 ET 200X must remain constant or be switched off with a delay of 1 sec . Emitted Interference with EN 61800- -3 Note ET 200X Frequency converter EM 148--FC meets the requirements for the emitted interference with EN 61800--3 (Adjustable speed electrical power drive systems) for industrial applications. Copyright 2007 by Siemens AG A5E00476687-03...
  • Page 74 Protective circuit (RC circuit) necessary when using motor brake To prevent the motor brake from affecting the load supply voltage (3 x 400 VAC) of the ET 200X frequency converter EM 148-FC, you have to use a RC circuit and take note of configuration and mounting rules.
  • Page 75 Mounting rules S Each ET200X station in the control cabinet has to be supplied with its own feed cable and fuse. S For larger installations, use a separate ET 200X station for each motor starter and for each frequency converter. Motor starters which switch large inductive loads especially have to be separated from the frequency converter.
  • Page 76 Product Information on Manual EM 148-FC Frequency Converter, Edition 04/2003 A5E00476687-03...

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