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Siemens 3RS2 Manual

Monitoring and control devices temperature monitoring relay
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Industrial Controls
Monitoring and control devices
3RS2 temperature monitoring
relay
Equipment Manual
02/2022
A5E42462552002A/RS-AB/002
Introduction
Safety instructions,
standards
ATEX
Analog devices
Digital devices
Digital devices with IO-Link
Sensor expansion module
Thermocouples
Resistance sensors
Circuit diagrams
Connection
Mounting
Technical data
CAx data
Spare parts/accessories
Process data and data sets
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

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Summary of Contents for Siemens 3RS2

  • Page 1 Introduction Safety instructions, standards ATEX Industrial Controls Analog devices Monitoring and control devices 3RS2 temperature monitoring Digital devices relay Digital devices with IO-Link Equipment Manual Sensor expansion module Thermocouples Resistance sensors Circuit diagrams Connection Mounting Technical data CAx data Spare parts/accessories...
  • Page 2 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 3: Table Of Contents

    Introduction ............................7 Required basic knowledge....................7 Scope of the manual ......................7 Operating Instructions ......................7 Siemens Industry Online Support ..................7 Siemens Industry Online Support app................... 9 Support Request ........................9 Security information ......................9 Recycling and disposal ....................... 10 Safety instructions, standards ......................
  • Page 4 Module replacement without PG/PC ................... 58 Integration into the SIMATIC environment ................59 Acyclic data exchange with the FB IOL_CALL............... 59 6.10 Diagnostics via IO‑Link ....................... 60 Sensor expansion module ........................63 Versions..........................63 Communication ......................... 63 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 5 Connection of thermocouples and resistance sensors ............85 Mounting ............................. 87 12.1 Warning notices ......................... 87 12.2 Mounting position, installation width/overall depth, layout..........87 12.3 Terminal coding ......................... 88 12.4 Mounting on a standard rail ....................88 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 6 Mounting on a level surface ....................90 12.7 Disassembling from a level surface ..................91 Technical data............................93 13.1 Technical data in Siemens Industry Online Support............. 93 13.2 Insulation concept of the plant................... 93 CAx data .............................. 97 14.1 CAx data types........................97 14.2...

  • Page 7: Introduction

    You can find the operating instructions under Operating instructions (https://www.siemens.com/sirius/manuals) in the Industry Online Support. Siemens Industry Online Support Information and service At Siemens Industry Online Support you can obtain up-to-date information from our global support database: • Product support • Application examples •...
  • Page 8 Introduction 1.4 Siemens Industry Online Support Link: Siemens Industry Online Support (https://support.industry.siemens.com/cs/de/en) Product support You can find information and comprehensive know-how covering all aspects of your product here: • FAQs Answers to frequently asked questions • Manuals/operating instructions Read online or download, available as PDF or individually configurable.

  • Page 9: Siemens Industry Online Support App

    Siemens Industry Online Support app Siemens Industry Online Support app The Siemens Industry Online Support app provides you access to all the device-specific information available on the Siemens Industry Online Support portal for a particular article number, such as operating instructions, manuals, data sheets, FAQs etc.

  • Page 10: Recycling And Disposal

    Siemens’ products and solutions undergo continuous development to make them more secure. Siemens strongly recommends that product updates are applied as soon as they are available and that the latest product versions are used. Use of product versions that are no longer supported, and failure to apply the latest updates may increase customer’s exposure to cyber...

  • Page 11: Safety Instructions, Standards

    Turn off and lock out all power supplying the system and device before working on the device. WARNING Commissioning by electrician required The 3RS2 temperature monitoring relay has protection class II and must be commissioned only by an authorized electrician. 2.1.2...

  • Page 12: Radio Interference

    Radio interference NOTICE The 3RS2 devices, except digital devices with IO-Link 3RS2800, are certified as devices of classes A (industrial environment) and B (residential environment). The digital devices with IO-Link 3RS2800, are certified as class A devices. The use of these...
  • Page 13 SIRIUS components have been approved by various different bodies (e.g. shipbuilding). The current list of approvals is provided in Chapter 10 of the catalog Catalog IC 10 (https:// support.industry.siemens.com/cs/ww/en/view/109747945). You can find more information and certificates for download at Internet (https://support.industry.siemens.com/cs/ww/en/ps/ 16027/cert).
  • Page 14 Safety instructions, standards 2.2 Standards, approvals and certificates 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 15: Atex

    Operate these devices outside the ATEX zone only! These devices do not have explosion protection type "i" (intrinsic safety). For this reason, they must only ever be used outside the hazardous (ATEX) zone. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 16: Use In Areas Subject To An Explosion Hazard Due To Gases Or Dust

    All components and their corresponding circuitry which belong to the critical sequence of the analog input 4 mA to 20 mA (exists on the sensor expansion module) have ATEX certification. Note This means you always need a sensor expansion module 3RS29 to use ATEX applications. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 17: Analog Devices

    The temperature is evaluated by the device and monitored for overshoot or undershoot of a limit. The analog devices have an adjustable limit value. They are operated according to the closed- current principle. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 18: Performance Characteristics

    Adjustable trip delay Adjustable monitoring Overshoot / undershoot Restart Auto Unit °C Connection systems The devices can be supplied with the connection systems detailed below: • Screw terminals • Spring-type terminals (push-in) 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 19: Sensor Types

    – 0 °C ... +200 °C – 0 °C ... +600 °C – +500 °C ... +1000 °C Changes in temperature over time can be found in the time diagrams (see Chapter Time diagrams (Page 22)). 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 20: Temperature Monitoring

    The limit ϑ1 is set for overshoot or undershoot to be monitored. The cable length of the sensors can be compensated for with three-wire measurement up to a maximum cable resistance of ... ohm. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 21: Operator Control

    Selection of temperature range (resistance sensors Pt 100) ⑥ Setting of the measured value ϑ1 (see Measuring ranges (Page 19)) ⑦ Red diagnostics LED "Theta" ⑧ Green diagnostics LED "Ready" ⑨ Selection of thermocouple temperature measuring range (see table) 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 22: Time Diagrams

    In the event of an error (e.g. wire break or short-circuit in a sensor cable), the device enters sleep mode (change-over contact 11/14 open, 11/12 closed) Time diagrams Monitoring of the upper limit value: A1(+ ) /A2(-) ϑ1 hyst. 14NO/ 11C (ϑ LED) 12NC/11NC 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 23 Analog devices 4.9 Time diagrams Monitoring of the lower limit value: A1(+ ) /A2(-) hyst. ϑ1 14NO/ 11C (ϑ LED) 12NC/11NC 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 24 Analog devices 4.9 Time diagrams 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 25: Digital Devices

    • Monitoring of coolants • Packaging industry • Electroplating • Air-conditioning systems • Ventilation systems • Solar collectors • Heat pumps • Hot water supply • Panel building • Rail • Shipbuilding 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 26: General Functions

    The other limit value results in a disconnection. A two-step or three-step control can also be implemented with digital devices. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 27: Special Functions

    RS (control device) function in accordance with EN 14597. The 3RS2 evaluation unit sets a reserve of 2 °C for resistance sensors and 3 °C for thermocouples, i.e. in the during limit violation monitoring, the device would react 2 °C / 3 °C earlier for safety reasons.

  • Page 28: Temperature Limiter Tb

    If the relay output (K1) between the terminals 11C and 14NO is switched off (quiescent current principle), the device is in the safe state. This status is maintained in the valid range of the device until manually unlocked. A parameter change is prevented by a 3-digit code. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 29 DEV.MODE = TB/ATEX DEV.MODE = TB/ATEX MON.MODE = Over MON.MODE = Under A1/A2 A1/A2 ϑ1 hyst. hyst ϑ1 reset reset init init 11C/14NO 11C/14NO Figure 5-4 Temperature limiter safety function time diagram 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 30: Temperature Monitor Tw

    A1/A2 A1/A2 ϑ2 hyst. hyst. ϑ2 ϑ1 hyst. hyst. ϑ1 ϑ1<ϑ2 init init 11C/14NO 21C/24NO 11C/12NC 21C/22NC 14NO 12NC 24NO 22NC 12NC 14NO 22NC 24NO Figure 5-5 Temperature monitor time diagram 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 31: Communication

    Type T • Type E • Type E • Type N • Type N • Type S • Type S • Type R • Type R • Type B • Type B 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 32: Connection Systems

    Resistance sensors • Pt100 • Pt1000 • KTY83-110 • KTY84 • NTC 1) NTC type: B57227-K333-A1 (100 °C: 1.8 kΩ; 25 °C 32.762 kΩ) Details are provided in Chapter Resistance sensors (Page 69). 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 33: Measuring Ranges

    -146.2 ... +752 -99 ... +999 -146.2 ... +1830.2 -99 ... +1300 -146.2 ... +2372 0 ... +1750 +32 ... +3182 0 ... +1750 +32 ... +3182 +400 ... +1800 +752 ... +3272 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 34: Using Sensors

    If you use the 4 ... 20 mA current input (selectable via the operating menu), all other sensor inputs are inactive. 5.10 Operator control 5.10.1 Operator controls and display elements The digitally adjustable monitoring relays are equipped on the front with the following operator controls and display elements: 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 35 • The Enter key is used – for selecting a process – for confirming a process If the Enter key is held down for more than two seconds, there is a switch to the Set mode. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 36: Display

    As long as the default values ϑ1 are set to 80 °C and ϑ2 to 50 °C, "!" appears on the display, as the NTC measuring range is 80 °C ... 160 °C. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 37: Menu-Based Operation

    Digital devices 5.10 Operator control 5.10.3 Menu-based operation Operating menu of digital devices The following device modes are available for the digital devices: • ErrorMode • ValueMode • RunMode • DeviceError • SetMode 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 38 In Value mode, you set the temperature limits ϑ1 and ϑ2: See Measuring ranges (Page 33). In this mode, the measurement and the evaluation run in the background. A parameter change has an immediate effect. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 39 • offset: -99 ... +99 °C • offset: -99 ... +99 °C CONTRAST ✓ ✓ ✓ ✓ FAC.RST ✓ ✓ ✓ ✓ TEST ✓ ✓ ✓ ✓ TEACH ✓ ✓ ✓ ✓ 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 40 The device works according to the open-circuit principle. – Closed (default setting): The device works according to the quiescent current principle. The operating modes "ATEX", "TW" and "TB" operate exclusively on the quiescent current principle. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 41 – on (default setting) – off • AUTO RST: The automatic reset function activates or deactivates automatic reset of the device when the selected temperature limit is overshot/undershot. – on – off (default setting) 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 42 – -25 °C ... +80 °C; -13 °F ... +176 °F (default setting: 0 °C) • CONTRAST: Setting of the display contrast: -10 ... +10 (default setting: 0) • FAC.RST: Resetting the device and the PIN to the factory default settings – Yes – No 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 43: Reset

    A short circuit that lasts > 5 minutes generates an error message. If RESET between Y1/Y2 is permanently closed, the error message 0xB703 is issued. The error can then only be remedied by disconnecting the voltage at the terminal. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 44: Time Diagrams

    A1/A2 A1/A2 ϑ2 hyst. hyst. ϑ2 ϑ1 hyst. hyst. ϑ1 ϑ1<ϑ2 init init 11C/14NO 21C/24NO 11C/12NC 21C/22NC 24NO 22NC 14NO 12NC 22NC 24NO 12NC 14NO Figure 5-9 Temperature monitor time diagram TW 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 45 ϑ1 hyst. hyst. ϑ1 ϑ1<ϑ2 reset reset init init init init 11C/14NO 21C/24NO 11C/12NC 21C/22NC 14NO 12NC 24NO 22NC 12NC 14NO 22NC 24NO Figure 5-10 Temperature limiter time diagram TB + ATEX 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 46 5) OUT OF RANGE The 33NO/34NO relay output is located on the 3RS29 sensor expansion module Figure 5-11 Standard function time diagram ϑ1> ϑ2 ϑ1 e.g. 20 °C ϑ2 e.g. 30 °C 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 47: Diagnostics

    (no tempera‐ ture monitoring). The user is prompted to check the parameters. Pressing the "Enter" button for longer than 2 sec‐ onds puts the device into "Set Mode". 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 48 Digital devices 5.12 Diagnostics 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 49: Digital Devices With Io-Link

    The measured values can be displayed directly in a control room or at the machine/control cabinet. • By means of IO-Link the devices can also be connected to the Siemens "MindSphere" open IoT operating system.

  • Page 50: Communication

    Connect the IO-Link device to the master via the three cables L+, C, and L-. The IO‑Link device is supplied with voltage via the 2 cables L+ and L-. The monitoring relay communicates with the master via cable C. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 51 For this purpose, connect the IO-Link device with the voltage source via the two cables L+ and L-. Since cable C is not used in this case, communication via IO-Link is not possible. The pin assignments of the available IO-Link devices are described in the relevant product chapters. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 52: Time Diagrams

    A1/A2 A1/A2 ϑ2 hyst. hyst. ϑ2 ϑ1 hyst. hyst. ϑ1 ϑ1<ϑ2 init init 11C/14NO 21C/24NO 11C/12NC 21C/22NC 24NO 22NC 14NO 12NC 22NC 24NO 12NC 14NO Figure 6-1 Temperature monitor time diagram TW 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 53 ϑ1 hyst. hyst. ϑ1 ϑ1<ϑ2 reset reset init init init init 11C/14NO 21C/24NO 11C/12NC 21C/22NC 14NO 12NC 24NO 22NC 12NC 14NO 22NC 24NO Figure 6-2 Temperature limiter time diagram TB + ATEX 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 54 5) OUT OF RANGE The 33NO/34NO relay output is located on the 3RS29 sensor expansion module Figure 6-3 Standard function time diagram ϑ1> ϑ2 ϑ1 e.g. 20 °C ϑ2 e.g. 30 °C 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 55: Configuring With Step 7

    • Optional: The GSD files are installed in HW Config. You can download the GSD files for the ET 200SP from Internet (http://www.siemens.com/comdec). • Optional: Install the function block FB "IOL_CALL" for backing up/restoring IO-Link master parameters and IO-Link device parameters. You can download the function block from the Internet.

  • Page 56: Configuring With Step 7 And S7-Pct

    1. In the Configuration table, select the IO-Link master (e.g. the 4SI SIRIUS electronics module). 2. Right-click and select "Start Device Tool" in the shortcut menu. Click on "S7-PCT" in the submenu. Result:S7-PCT is started. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 57: Configuring Without Step 7

    2. Create a new project or open an existing project as described in the online help. 3. Select an IO-Link master. 4. Select the SIRIUS IO-Link monitoring relay in the hardware catalog of the S7-PCT. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 58: Module Replacement

    Internet (https://support.automation.siemens.com/WW/view/en/33102519/133100) . • Copy the IO-Link Call function block FB1 (including data block DB10) to a STEP 7 project. • Use the IO-Link Call function block FB1 as described in the demo project. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 59: Integration Into The Simatic Environment

    Integration of the IO-Link device into the SIMATIC environment Faceplates embedded in a demo project are offered for download for human machine interfacing and diagnostics for Siemens IO‑Link Devices in conjunction with a SIMATIC and WinCC flexible 2008. The faceplates can be transferred from the demo project to your own WinCC flexible 2008 project.

  • Page 60: Diagnostics Via Io-Link

    • The connection to the temperature • Check the connection to the temper‐ circuit sensor has been interrupted. ature sensor. • The temperature sensor is defective. • Use a new temperature sensor. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 61 "Data set 92 - Diagnostics (Page 104)"). 3) SW = group warning: You can find detailed information in diagnostics data set 92 (see Chapter "Data set 92 - Diagnostics (Page 104)"). x: Bit set ○: Not relevant 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 62 Digital devices with IO-Link 6.10 Diagnostics via IO‑Link 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 63: Sensor Expansion Module

    The devices can be supplied with the connection systems detailed below: • Screw terminals • Spring-type terminals (push-in) Sensor types Resistance sensors • Pt100 (monitoring for overshoot/undershoot) • Pt1000 (monitoring for overshoot/undershoot) • KTY83‑110 (monitoring for overshoot/undershoot) 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 64: Operator Control

    If you use the 4 ... 20 mA current input (selectable via the operating menu), all other sensor inputs are inactive. Operator control 7.5.1 LEDs The following LEDs are mounted on the front of the sensor expansion modules: 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 65: Status Display

    7.5.2 Status display Status Green LED "Device" Red LED "COM" Device ready + communication set up Device ready + communication error Flickering Device not ready / internal fault / no power supply 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 66 Sensor expansion module 7.5 Operator control 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 67: Thermocouples

    The main advantage of thermocouples is the wide temperature range they are able to cover. Characteristic curves of thermocouples The following characteristic curves show the temperature ranges of the thermocouples: Figure 8-1 Thermocouples J, K, T, E, N Figure 8-2 Thermocouples S, R, B 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 68 Thermocouples 8.2 Characteristic curves of thermocouples 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 69: Resistance Sensors

    KTY type resistance sensors are, therefore, highly sensitive but have a relatively small temperature measuring range. Characteristic curves The following characteristic curves show the temperature ranges of resistance sensors: Figure 9-1 Temperature ranges of the resistance sensors 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 70 Resistance sensors 9.2 Characteristic curves 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 71: Circuit Diagrams

    • Output/actuator: 14 N0, 11 C (change-over contact's NO contact) • Signaling output: 12 NC, 11 C (change-over contact's NC contact) Operating principle: If the temperature set on the device is undershot, the output relay connects the heating. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 72: Using The Digital Device To Implement A Simple 2-Step Controller With Simultaneous Output Of An Alarm Value

    • Output/actuator: 14 N0, 11 C (change-over contact's NO contact) • Signaling output: 12 NC, 11 C (change-over contact's NC contact) Operating principle: If the temperature set on the device is undershot, the output relay connects the heating. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 73: Using The Digital Device To Implement A Simple 3-Step Controller With Simultaneous Output Of An Alarm Value

    • Signaling output: 12 NC, 11 C (change-over contact's NC contact) Operating principle: If the temperature set on the device is undershot, the output relay connects the heating. If the set temperature is exceeded, the cooling is connected. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 74 Circuit diagrams 10.3 Using the digital device to implement a simple 3-step controller with simultaneous output of an alarm value 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 75: Connection

    Individual terminals can be replaced not only in the case of screw-type connections, but also in the case of spring-type connections (with push-in function). This process minimizes the wiring overhead – only the individual terminal concerned needs to be rewired, not the entire device. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 76: Connection Data For Terminals

    The position of the label corresponds to the position of the respective terminal. NOTICE Risk of property damage When using the terminals, you must observe the correct position of the terminals (see inside of cover). 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 77 If a terminal cover is lost or damaged, you can simply print out the figures of the following table in their original size, and glue them into a neutral replacement terminal cover. You can obtain replacement terminal covers from Siemens Support. You can use the terminal labels for modules with screw terminals and spring-type terminals.

  • Page 78: Connection Tool

    The devices are equipped with either screw terminals or spring-type terminals. The temperature monitoring relays can be adjusted with the following tool options: Screw terminals Screw terminals with ergonomic handling when using a standard screwdriver. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 79: Connecting The Screw Terminals

    Hold the cable in the screw terminal. Tighten the screw with a torque of 0.6 to 0.8 N. Pull on the cable to ensure it is screwed tight. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 80: Disconnecting Screw Terminals

    The terminal space for the spring-type terminals is rectangular. The maximum overall dimensions of the conductor to be wired must not exceed 2.4 x 2.8 mm. Take note of the orientation of the terminal space, which may require vertical fitting of rectangular-crimped conductors. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 81: Connect The Spring-Type Terminal (Push-In)

    DIN 5264 screwdriver with size 0.5 x 3 mm (for finely-stranded conductors only). (Article number of the screwdriver: 3RA2908-1A) Requirements For suitable connection cross-sections of the cables, see chapter Connection data for terminals (Page 76). 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 82: Disconnect The Spring-Type Terminal (Push-In)

    11.10 Disconnect the spring-type terminal (push-in) WARNING Hazardous voltage Can cause death, serious injury, or property damage. Turn off and lock out all power supplying this device before working on this device. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 83: Attaching The Terminals

    You must have removed the terminals, for the purpose of replacing a device, for example. Attaching the terminals Note Screw terminals/push-in terminals Screw and push-in terminals are inserted into the module using the same principle. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 84: Removing The Terminals

    Turn off and lock out all power supplying this device before working on this device. Removing the terminals Note Screw terminals/push-in terminals Screw and push-in terminals are removed from the module on the same principle. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 85: Connection Of Thermocouples And Resistance Sensors

    The maximum cable length for resistance sensors with a cable diameter of 1.5 mm² is 500 m. Digital versions with display Digital versions are suitable for all common resistance sensors and thermocouples (see Sensor types (Page 32)). 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 86 Sensor expansion module Two additional resistance sensors can be connected with the sensor expansion module. This results in a total of three usable resistance sensors in combination with a 3RS26/3RS28 digital device. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 87: Mounting

    Position the sensor expansion module immediately to the right of the digital basic unit. NOTICE Visual contact necessary Ensure that there is a visual contact between the sensor expansion module and the digital basic unit. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 88: Terminal Coding

    Turn off and lock out all power supplying this device before working on this device. Requirements A horizontal 35-mm wide mounting rail in accordance with EN 60715 has been properly secured at the installation location. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 89: Disassembling From A Standard Mounting Rail

    Instructions Figure Press the device downwards. Pull the lower half of the device away from the standard mounting rail. Lift the device from the upper edge of the stand‐ ard mounting rail. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 90: Mounting On A Level Surface

    Hold the device up to the level surface prepared for screw fastening. Insert the head screws through the correspond‐ ing elongated holes in the fixing lugs. Screw the device securely onto the level surface. Tightening torque: 1 Nm 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 91: Disassembling From A Level Surface

    The terminals have been removed or disconnected. Disassembling from a level surface Step Instructions Figure Hold the device firmly. Unscrew the cap screws. Lift the device from the level surface. Remove the securing brackets from the device. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 92 Mounting 12.7 Disassembling from a level surface 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 93: Technical Data

    13.1 Technical data in Siemens Industry Online Support Technical data sheet You can also find the technical data of the product at Siemens Industry Online Support (https:// support.industry.siemens.com/cs/ww/en/ps/). 1. Enter the full article number of the desired device in the "Product" field, and confirm with the Enter key.
  • Page 94 Technical data 13.2 Insulation concept of the plant Figure 13-1 Isolation circuit diagram 3RS2600-.BW30 Figure 13-2 Isolation circuit diagram 3RS2600-.BA30 Figure 13-3 Isolation circuit diagram 3RS2800 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 95 Technical data 13.2 Insulation concept of the plant Figure 13-4 Isolation circuit diagram 3RS2900-.AW30 Figure 13-5 Isolation circuit diagram 3RS2900-.AA30 Figure 13-6 Isolation circuit diagram 3RS2500-..W.. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 96 Technical data 13.2 Insulation concept of the plant Figure 13-7 Isolation circuit diagram 3RS2500-..A.. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 97: Cax Data

    • GSP in ANSI • ecl@ss functional structure 14.2 CAx data You can find the CAx data in the Siemens Industry Online Support (https:// support.industry.siemens.com/cs/ww/en/ps/). 1. Enter the full article number of the desired device in the "Product" field, and confirm with the Enter key.
  • Page 98 CAx data 14.2 CAx data 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 99: Spare Parts/Accessories

    Spare parts/accessories 15.1 Overview The table below shows the accessories available for the SIRIUS 3RS2 temperature monitoring relays: Designation Graphic Article number SIRIUS terminal 2-pin screw-type 3ZY1122-1BA00 SIRIUS terminal, 2-pole, push-in, 1 mm² x 4 mm² 3ZY1122-2BA00 SIRIUS push-in lugs for wall mounting (contents: 12 units)

  • Page 100: Terminals

    You can assign the terminals on the basis of the labeled terminal covers. See also Connection (Page 75). 15.3 Device fusing The 3RS26/3RS28 digital devices can be protected by a PIN to protect the buttons against unauthorized or unintentional actuation. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 101: Process Data And Data Sets

    • Data set 92 - Diagnostics (Page 104) • Data set 94 - measured values (Page 106) • Data set 95 - measured values (floating-point format) (Page 107) • Data set 131 - parameters (Page 107) 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 102: Process Image Output (Piq) And Input (Pii)

    0: 22NC / 21C closed and 24NO / 21C open DI0.6 Status output relay K3 • 1: 33NO / 34NO closed • 0: 33NO / 34NO open DI0.7 DI1.0 - DI1.4 Analog value coding bits 0 to 4 DI1.5 DI1.6 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 103: Identification Data

    Product ID 3RS2800-.BA40 — 0x17 (23) Firmware Revision Firmware Version — 0x18 (24) r / rw Application Specific Tag — max. 1) Direct Parameter Page 2) Value varies for each temperature monitoring relay 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 104: Data Set 92 - Diagnostics

    Bits that are not described in the tables below are reserved and should be ignored. Note Sub-indices are not supported. Table 16-5 Data set 92 - Diagnostics Byte.Bit Description Operating system functions 3RS2 16.0 Ready 16.1 Group error 16.2 Group warning 16.3...
  • Page 105 38.4 Temperature sensor 3 - Measured value is below the two warning limits (monitoring for undershoot) Current input 4 ... 20 mA 40.0 Current input - measuring range overstepping 40.1 Reserved 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 106: Data Set 94 - Measured Values

    32.0 … 33.7 Temperature T in °C 34.0 … 35.7 Temperature T in °F 36.0 … 37.7 Temperature T in °C 38.0 … 39.7 Temperature T in °F 40.0 ... 41.7 Current input 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 107: Data Set 95 - Measured Values (Floating-Point Format)

    Table 16-8 Data set 131 - parameters Byte.Bit Description Operating system functions 16.0 Group diagnostics Default: [1] [0] disabled [1] enabled 16.1 Group error diagnostics Default: [1] [0] disabled [1] enabled 16.2 Reserved 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 108 [2] Window monitoring 24.5 ... 24.7 Temperature unit Default: [0] [0] °C (degrees Celsius) [1] °F (degrees Fahrenheit) [2] mA [3] % 25.0 ON-delay time (at Power ON) Default: [0] [0] disabled [1] enabled 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 109 Default: [0] [0] disabled [1] enabled 32.3 Current input 4...20 mA enabled Default: [0] [0] disabled [1] enabled 32.4 Sensor expansion module / output relay K3 Default: [0] [0] disabled [1] enabled 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 110 Default: 5 °C / 5 °F Min: 1 °C/1 °F Max: 999 °C / 999 °F 48.0 Relay switching behavior Default: [0] [0] Quiescent current principle [1] Open-circuit principle 49.0 ... 49.7 Reserved 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 111 Comparison measuring point in °C / °F Type: INT Default: 0 Min: -25 °C / -13 °F Max: 80 °C / 176 °F Reading always returns 0 64.0 Eco mode Default: [1] [0]: disabled [1]: enabled 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 112 Device mode Type: BYTE Default: [0] [0] standard [1] ATEX [2] Temperature monitor TW [3] Temperature limiter TB 71.0 ... 71.7 Reserved 1) If the unit is mA, this parameter has no effect 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 113: Glossary

    Screw-type connection system Connection technology in which an electrical cable is clamped by a screw. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 114 Temperature monitoring relay Relay which, together with an evaluation unit, monitors a temperature and, if this temperature is exceeded, switches a setpoint value. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 115 Three-step controller Discrete controller in which the output quantity cannot assume any required setting, but only one of three switch positions. 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 116 Glossary 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

  • Page 117: Index

    Connection system, 75 Connection systems, 18, 32, 63 Identification data, 103 Connections, 76 Infrared interface, 31 CONTRAST, 39 INPUT, 39 Installation width/overall depth, 87 Integration of the IO-Link device into the SIMATIC environment, 59 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 118 Status display of digital devices, 36 PII, 102 Status display of sensor expansion module, 65 PII - status information, 102 Status display on analog devices, 22 PIN, 39 PIQ, 102 PIQ - Control commands, 102 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 119 Time diagram of the analog devices, 22 Tool, 79, 80, 81, 83 Tool for connecting and setting, 78 Two-step control, 26 UNIT, 39 Using NTC sensors, 34 Using resistance sensors, 34 Using thermocouples, 34 ValueMode, 37 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...
  • Page 120 Index 3RS2 temperature monitoring relay Equipment Manual, 02/2022, A5E42462552002A/RS-AB/002...

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