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SIRIUS 3RN2 thermistor motor protection relay 
Manual, 10/2016, A5E34244868002A/RS-AA/001 

13

 

 

Safety notes 

2 

2.1

 

General safety notes 

 

 

Note 
Recycling and disposal 
Dispose of existing packing material in accordance with applicable regulations or recycle it. 
The SIRIUS 3RN2 thermistor motor protection relays can be recycled thanks to a low-

pollutant manufacturing process. For environmentally-friendly recycling and disposal of your 

electronic waste, please contact a company certified for the disposal of electronic waste. 

 

 

WARNING 

Protection against electrically conductive contamination 
The devices must be protected against conductive contamination while taking account of 

the ambient conditions. One way to achieve this is to install the devices in a control cabinet 

with the appropriate degree of protection. 
You will find more detailed information in IEC 60529, for example. 

 

 

CAUTION 

Protection against electrostatic charge 
When handling and installing the SIRIUS 3RN2 thermistor motor protection relays, ensure 

that the components are protected from being electrostatically charged. Changes to the 

system configuration and wiring are only permissible while the supply voltage is switched 

off. 

Connection of SIRIUS 3RN2 thermistor motor protection relays is only permissible when 

the power supply is switched off. 

 

 

Содержание 3RN2011

Страница 1: ...Manual 3RN2 Thermistor motor protection relay Monitoring and control devices Edition 10 2016 siemens com SIRIUS ...

Страница 2: ......

Страница 3: ...__________________ ___________________ ___________________ SIRIUS Monitoring and control devices SIRIUS 3RN2 thermistor motor protection relay Manual 10 2016 A5E34244868002A RS AA 001 Introduction 1 Safety notes 2 ATEX 3 Description 4 Mounting 5 Connection 6 Functions 7 Alarm error and system messages 8 Technical data 9 CAx data 10 Dimension drawings 11 Circuit diagrams 12 Spare parts accessories ...

Страница 4: ...only by personnel qualified for the specific task in accordance with the relevant documentation in particular its warning notices and safety instructions Qualified personnel are those who based on their training and experience are capable of identifying risks and avoiding potential hazards when working with these products systems Proper use of Siemens products Note the following WARNING Siemens pr...

Страница 5: ...formation about operational safety 14 3 ATEX 15 3 1 Safety and commissioning instructions for hazardous areas 15 3 2 Use in areas subject to an explosion hazard due to gases or dust 19 4 Description 21 4 1 Device overview 21 4 2 Device description 21 4 3 Device versions 25 4 4 Special features 25 4 5 Area of application 26 5 Mounting 27 5 1 Warning notices 27 5 2 Terminal coding 28 5 3 Mounting th...

Страница 6: ... for spring loaded terminals with push in technology 41 6 6 Connect the spring loaded terminal push in 42 6 7 Disconnect the spring loaded terminal push in 44 6 8 Attaching the terminals 45 6 9 Removing the terminals 46 7 Functions 47 8 Alarm error and system messages 51 8 1 Function charts 51 8 2 LED displays 54 9 Technical data 57 9 1 Technical data in Siemens Industry Online Support 57 10 CAx d...

Страница 7: ...estions relating to Siemens products and solutions This service enables direct and central access to in depth information concerning the products systems and applications for industry and to a large number of programming configuration and application examples Its content is available via a mobile app The Technical Forum of the Online Support provides the opportunity for users to swap information S...

Страница 8: ...pprovals and certificates Test certificates and characteristic curves All Product Support information is at your disposal free of charge and around the clock and you always get the current version Link Product Support http support automation siemens com WW view en 4000024 CAx data The CAx Download Manager provides you with a simple means of gaining access to up to date product data for your CAx or...

Страница 9: ...lication examples Function blocks tools Background and system descriptions Performance statements Demonstration systems videos Link Applications Tools https support industry siemens com cs ww en sc 2054 My Documentation Manager The My Documentation Manager enables you to put together your own documentation from our standard documents manuals which are located in the product support Under mySupport...

Страница 10: ... machine readable information simplifies and accelerates handling of the respective devices As well as fast access to the serial numbers of the respective devices for unique identification the DataMatrix codes simplify communication with Siemens Technical Support SIEMENS Industry Support App DataMatrix codes primarily enable extremely fast and convenient access to all device specific information r...

Страница 11: ...g shipbuilding You will find the the current list of approvals in the Monitoring and Control Devices chapter of Catalog IC 10 SIRIUS Industrial Controls www siemens com industrial controls catalogs Further information and certificates are available for download on the Internet https support industry siemens com cs ww en ps 1 5 Declaration of conformity The manufacturer declares that the thermistor...

Страница 12: ...s for warning and tripping Resetting and further functions 0 Automatic reset 1 Manual reset with wire break and short circuit detection 2 Manual auto remote reset non volatile with wire break and short circuit detection 3 Manual auto remote reset non volatile with wire break and short circuit detection with protective separation Connection system 1 Screw terminal 2 Spring loaded terminal push in O...

Страница 13: ...ally conductive contamination The devices must be protected against conductive contamination while taking account of the ambient conditions One way to achieve this is to install the devices in a control cabinet with the appropriate degree of protection You will find more detailed information in IEC 60529 for example CAUTION Protection against electrostatic charge When handling and installing the S...

Страница 14: ...ant note for maintaining operational safety of your system WARNING Hazardous Voltage Can Cause Death Serious Injury or Risk of Property Damage Please take note of our latest information Systems with safety related characteristics are subject to special operational safety requirements on the part of the operator The supplier is also obliged to comply with special product monitoring measures For thi...

Страница 15: ...air mixtures are present and are additionally approved for Area D areas containing combustible dust 3RN2011 3RN2012 B 30 3RN2013 3RN2023 SIRIUS 3RN2 thermistor motor protection relays are not intended for installation in hazardous areas If they are installed in a potentially explosive atmosphere the SIRIUS 3RN2 thermistor motor protection relays must be adapted to the applicable type of protection...

Страница 16: ...NG Personal injury and damage to property All connection commissioning and maintenance work must be performed by qualified responsible personnel Improper handling may result in serious personal injury and considerable damage to property Cable routing The measuring circuit cables must be routed as separate control cables Use of cores from the power supply cable of the motor or any other main supply...

Страница 17: ...7 SFF 60 PFD 1 5E 02 PFHd 1 5E 06 MTBF 50 years MTTFd according to EN ISO 13849 High DCavg according to DIN EN ISO 13849 None T1 value repeat test 3 years DIN EN 60079 17 Section 4 4 Note Currently valid safety values You can find the currently valid safety values in the Siemens Industry Online Support https support industry siemens com cs ww en ps Installation and commissioning SIRIUS 3RN2 thermi...

Страница 18: ...ea the thermistor motor protection relays must not be operated with automatic RESET terminals Y1 and Y2 permanently jumpered User test repeat test Repeat testing in accordance with EN 60079 17 can be combined with the user test Operation of the SIRIUS 3RN2 thermistor motor protection relay must be discontinued if test results are negative The test must be performed by a qualified person familiar w...

Страница 19: ... potentially explosive gas vapor mist and air mixtures are present and additionally in Area D areas containing combustible dust The 3RN2 thermistor motor protection relays are not intended for installation in hazardous areas If they are installed in a hazardous area the 3RN2 thermistor motor protection relays must be adapted to the applicable type of protection For 3RN2 thermistor motor protection...

Страница 20: ...ATEX 3 2 Use in areas subject to an explosion hazard due to gases or dust SIRIUS 3RN2 thermistor motor protection relay 20 Manual 10 2016 A5E34244868002A RS AA 001 ...

Страница 21: ...ection relays are thermal protection devices that are suitable in combination with type A PTC thermistors for monitoring temperatures of electrical drives transformer windings oils bearings air etc The most frequent application is monitoring of three phase motors in which the motor manufacturer has fitted a PTC sensor into every winding overhang and in which these PTC sensors are connected in seri...

Страница 22: ... to IEC 60947 8 The characteristic curves of the Type A temperature sensors are described in the standards IEC 60947 8 EN 44081 and EN 44082 Figure 4 1 Typical characteristic curve of a type A sensor logarithmic scale Depending on the number of sensors connected in series the following tripping and restart temperatures will result based on the TNF rated response temperature of the sensor Tripping ...

Страница 23: ...m permissible motor temperature and installed in the windings Because the resistance characteristic values are identical for all types you do not need to concern yourself with the actual temperature limit of the motor The 3RN2 thermistor motor protection relay trips reliably when the rated response temperature is exceeded You can see the rated response temperatures by the colors of the thermistor ...

Страница 24: ...screw type terminals or push in terminals Bimetallic switch In some applications bimetallic switches e g Klixon Thermoclick are used as sensors instead of PTC temperature sensors Bimetallic switches are temperature and current dependent NC contacts and are available for different temperature ranges Because bimetallic switches have practically no resistance below their opening temperature short cir...

Страница 25: ...The 3RN2 thermistor motor protection relays are designed in two widths 17 5 mm This overall width is used for the 3RN2000 compact tripping relays with 1 changeover contact and with A1 jumpered contact root of the changeover contact and the 3RN2010 C 30 with 1 NC contact and 1 NO contact The units have 8 possible terminals 22 5 mm This overall width is used for all other relays and provides 12 poss...

Страница 26: ... under the most difficult ambient conditions without the need to make adjustments on the SIRIUS thermistor motor protection relay Versions with hard gold plated contacts additionally ensure a switching reliability that is higher than that of an electronic control Direct motor protection At increased ambient temperatures When switching frequency is too high When starting and braking operations are ...

Страница 27: ...us voltage Causes electric shock and burns when touched Turn off and lock out all power supplying this device before working on this device Note The following figures are for illustrative purposes only The figures below show a 22 5 mm housing The overall width overall depth terminals type and number of terminals and accessories and mounted components are similar may differ from the actual product ...

Страница 28: ...g SIRIUS 3RN2 thermistor motor protection relay 28 Manual 10 2016 A5E34244868002A RS AA 001 5 2 Terminal coding You can fit the terminals with coding pins 3ZY1440 1AA00 This helps you to avoid errors when replacing the terminals ...

Страница 29: ...evices on a standard mounting rail Requirements A horizontal 35 mm wide mounting rail in accordance with DIN EN 60715 has been properly secured at the installation location Procedure Step Instructions Figure 1 Place the back of the device onto the upper edge of the standard mounting rail 2 Press the lower half of the device against the DIN rail until the device engages ...

Страница 30: ...RNING Hazardous Voltage Can Cause Death Serious Injury or Damage to Property Before starting work therefore disconnect the system and devices from the power supply Requirements The terminals have been removed or disconnected Procedure Step Instructions Figure 1 Press the device downwards 2 Pull the lower half of the device away from the standard mounting rail 3 Lift the device from the upper edge ...

Страница 31: ...s in the Dimension drawings Page 61 chapter for the distances between the drill holes Two screws to fit the M4 x 12 holes in accordance with DIN 784 Two lugs for screw fastening you will find the article numbers in the Spare parts accessories Page 67 chapter Procedure Step Instructions Figure 1 Insert the securing brackets into the openings provided on the device until they engage 2 Hold the devic...

Страница 32: ...azardous Voltage Can Cause Death Serious Injury or Property Damage Before starting work therefore disconnect the system and devices from the power supply Requirements The terminals have been removed or disconnected Procedure Step Instructions Figure 1 Hold the device firmly 2 Unscrew the cap screws 3 Lift the device from the level surface 4 Remove the securing brackets from the device ...

Страница 33: ...s The inside faces of the terminal covers are labeled with the designations of the relevant 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 Upper terminal cover Lower terminal cover ...

Страница 34: ...r to the unit if you have removed the terminal cover 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 type terminals and spring loaded terminals Parts o...

Страница 35: ...g tables shows the terminal assignments in the terminal covers of the SIRIUS thermistor motor protection relays Module version Inscription of the terminal cover Upper terminal cover Lower terminal cover Terminal assignment on the device Overall width 17 5 mm Compact units 3RN2000 AA30 3RN2000 AW30 Standard units 3RN2010 CA30 3RN2010 CW30 ...

Страница 36: ... 2016 A5E34244868002A RS AA 001 Module version Inscription of the terminal cover Upper terminal cover Lower terminal cover Terminal assignment on the device Overall width 22 5 mm Standard units 3RN2010 BA30 3RN2010 BW30 3RN2011 BA30 3RN2011 BW30 3RN2012 BA30 3RN2013 BA30 3RN2012 BW3 3RN2013 W30 ...

Страница 37: ...upply voltage A2 Rated control supply voltage T1 Thermistor connection contact 1 T2 Thermistor connection contact 2 1T1 applies to 3RN2023 only Thermistor connection for sensor circuit 1 contact 1 2T1 applies to 3RN2023 only Thermistor connection for sensor circuit 2 contact 1 T2 applies to 3RN2023 only Thermistor connection common contact 2 Y1 and Y2 Connection for remote RESET NO contact Y1 and ...

Страница 38: ...1 x 80 4 5 mm Torque 0 6 0 8 Nm 5 2 7 0 lb inch Flat head screwdriver 3RA2908 1A Size 3 mm for operating the springs DIN 5264 A 0 5 x 3 Rigid cable A 10 mm 1 x 0 5 4 0 mm2 2 x 0 5 2 5 mm2 A 10 mm 1 x 0 5 4 0 mm2 Flexible conductor with end sleeve A 10 mm 1 x 0 5 4 0 mm2 2 x 0 5 1 5 mm2 1 A 10 mm 1 x 0 5 2 5 mm2 Flexible cable Not permissible A 10 mm 1 x 0 5 4 0 mm2 AWG 1 x 20 12 2 x 20 14 1 x 20 1...

Страница 39: ...k therefore disconnect the system and devices from the power supply Requirements Cross tip screwdriver size PZ 1 x 80 For suitable connection cross sections of the cables see the Connection data for terminals Page 38 chapter Procedure Step Instructions Figure 1 Insert the relevant cable into square on the screw type terminal until it engages Hold the cable in the screw terminal 2 Tighten the screw...

Страница 40: ...w type terminals WARNING Hazardous Voltage Can Cause Death Serious Injury or Damage to Property Before starting work therefore disconnect the system and devices from the power supply Requirements Cross tip screwdriver size PZ 1 x 80 Procedure Step Instructions Figure 1 Unscrew the screw of the screw type terminal 2 Remove the cable from the unscrewed screw type terminal ...

Страница 41: ...ns of the conductor to be wired must not exceed 2 4 x 2 8 mm Take note of the orientation of the terminal area which may require vertical fitting of rectangular crimped conductors To make optimum use of available terminal area you are advised to choose a form of crimping that creates a corresponding rectangular contour Trapezoidal crimping is highly suitable in this case When a conductor is used t...

Страница 42: ...es from the power supply The spring loaded push in connections allow wiring without tools for rigid conductors or conductors equipped with end sleeves For wiring finely stranded or stranded conductors without end sleeves on spring loaded push in terminals a screwdriver is required to open the spring terminal Requirements DIN 5264 screwdriver with size 0 5 x 3 mm for finely stranded conductors only...

Страница 43: ...tep Instructions Figure 1 Insert the cable into the oval opening as far as it will go 2 Pull on the cable to ensure it is tight Table 6 2 Finely stranded cables without end sleeve Step Instructions Figure 1 Insert the screwdriver in the rectangular opening to open the terminal spring oval opening 2 Insert the cable as far as it will go into the oval opening and remove the screwdriver 3 Pull on the...

Страница 44: ...ause Death Serious Injury or Property Damage Before starting work therefore disconnect the system and devices from the power supply Requirements DIN 5264 screwdriver with size 0 5 x 3 mm article number of the screwdriver 3RA2908 1A Procedure Step Instructions Figure 1 Insert the screwdriver into the rectangular opening of the spring loaded terminal until it engages 2 Remove the cable from the oval...

Страница 45: ...erefore disconnect the system and devices from the power supply Requirements You must have removed the terminals for the purpose of replacing a device for example Procedure Note Screw type terminals push in terminals Screw type and push in terminals are inserted into the module using the same principle Step Instructions Figure 1 Insert the detachable terminals into the guide rail of the device 2 S...

Страница 46: ...ry or Damage to Property Before starting work therefore disconnect the system and devices from the power supply Procedure Note Screw type terminals push in terminals Screw type and push in terminals are removed from the module on the same principle Step Instructions Figure 1 Press the clip of the terminals upwards 2 Pull the terminals out to the front 3 Lift the terminals out of the guide rail of ...

Страница 47: ...t relays drop out exception 3RN2012 BW31 and the devices are only functional again 1 after restarting the system The flashing red LED TRIPPED indicates a system stop 1 NOTICE Restart Disconnect the devices from the supply voltage for at least 1 s before restarting the system The 3RN2011 3RN2012 3RN2013 and 3RN2023 devices are additionally equipped with wire break and short circuit detection in the...

Страница 48: ...not change in the event of a loss of supply voltage or a system stop but the connected motor is no longer monitored Separate supply voltage monitoring is therefore recommended 3RN2023 Warning and tripping thermistor motor protection relays You can connect two sensor circuits to one 3RN2023 thermistor motor protection relay that act on two separate output relays with 1 NO contact for warning and 1 ...

Страница 49: ...wn automatically i e all LEDs switched off and output relays opened Test function When not tripped you can call the test function by pressing the blue TEST RESET button for longer than 2 s This simulates tripping the unit due to overtemperature The test performs an internal device self test and ensures the function of the display LEDs and the output relay and All LEDs light up If Auto RESET is act...

Страница 50: ...tor protection relay again assuming the sensor circuit for tripping has cooled down again i e resistance of the PTC sensor 1500 Ω For this purpose the blue TEST RESET button must be kept pressed for between 0 5 and 2 s Remote RESET You can reset a tripped unit again using the pushbutton with a floating NO contact at terminals Y1 and Y2 provided the sensor circuit for tripping has cooled down again...

Страница 51: ...protection relay Manual 10 2016 A5E34244868002A RS AA 001 51 Alarm error and system messages 8 8 1 Function charts Figure 8 1 3RN2000 3RN2010 time diagram Figure 8 2 3RN2011 time diagram reset via pushbutton or voltage interruption ...

Страница 52: ...charts SIRIUS 3RN2 thermistor motor protection relay 52 Manual 10 2016 A5E34244868002A RS AA 001 Figure 8 3 3RN2012 3RN2013 time diagram reset via remote and pushbutton Figure 8 4 3RN2012 BW31 time diagram reset via remote or voltage interruption ...

Страница 53: ...arm error and system messages 8 1 Function charts SIRIUS 3RN2 thermistor motor protection relay Manual 10 2016 A5E34244868002A RS AA 001 53 Figure 8 5 3RN2023 time diagram reset via remote and pushbutton ...

Страница 54: ...es 3RN2000 AA30 3RN2000 AW30 TRIPPED Meaning OFF Temperature below the permitted limit or No power supply ON Temperature above the permitted limit The table below applies to the following modules 3RN2010 CA30 3RN2010 CW30 3RN2010 BA30 3RN2010 BW30 READY TRIPPED Meaning ON OFF Temperature below the permitted limit ON ON Temperature above the permitted limit OFF OFF No supply voltage or Device defec...

Страница 55: ... ON ON Self test is being performed on startup or after pressing the TEST RESET button 2 s Temperature above the permitted limit ON flickering Short circuit in the sensor circuit ON flashing Wire break in the sensor circuit ON OFF Temperature below the permitted limit OFF flashing Device in system STOP following inadequate supply voltage 1 OFF OFF No supply voltage or Device defective 1 NOTICE Res...

Страница 56: ...ckering flickering Short circuit in the sensor circuits ON flashing flashing Wire break in the sensor circuits or common T2 ON OFF OFF Temperature below the permitted limit ON ON OFF Temperature has exceeded warning threshold but is below the trip threshold OFF OFF flashing Device in system STOP following inadequate supply voltage 1 OFF OFF OFF No power supply Device defective Error detected durin...

Страница 57: ...iemens 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 24302 td 1 Enter the full article number of the desired device in the Product field and confirm with the Enter key 2 Click the Technical data link ...

Страница 58: ...Technical data 9 1 Technical data in Siemens Industry Online Support SIRIUS 3RN2 thermistor motor protection relay 58 Manual 10 2016 A5E34244868002A RS AA 001 ...

Страница 59: ... RS AA 001 59 CAx data 10 You can find the CAx data in the Siemens Industry Online Support https support industry siemens com cs ww en ps 24302 td 1 Enter the full article number of the desired device in the Product field and confirm with the Enter key 2 Click the CAx data link ...

Страница 60: ...CAx data SIRIUS 3RN2 thermistor motor protection relay 60 Manual 10 2016 A5E34244868002A RS AA 001 ...

Страница 61: ...SIRIUS 3RN2 thermistor motor protection relay Manual 10 2016 A5E34244868002A RS AA 001 61 Dimension drawings 11 Figure 11 1 Enclosure 17 5 mm for SIRIUS 3RN2 thermistor motor protection relays ...

Страница 62: ...Dimension drawings SIRIUS 3RN2 thermistor motor protection relay 62 Manual 10 2016 A5E34244868002A RS AA 001 Figure 11 2 Drilling diagram enclosure 17 5 mm ...

Страница 63: ...Dimension drawings SIRIUS 3RN2 thermistor motor protection relay Manual 10 2016 A5E34244868002A RS AA 001 63 Figure 11 3 Enclosure 22 5 mm short for SIRIUS 3RN2 thermistor motor protection relays ...

Страница 64: ...Dimension drawings SIRIUS 3RN2 thermistor motor protection relay 64 Manual 10 2016 A5E34244868002A RS AA 001 Figure 11 4 Drilling diagram enclosure 22 5 mm ...

Страница 65: ...a 3RN2012 or 3RN2013 thermistor motor protection relay A1 Rated control supply voltage A2 Rated control supply voltage K Contactor relay M Motor S NO contact latching S1 NO contact 1 S2 NO contact 2 S3 NO contact 3 T1 Thermistor connection contact 1 T2 Thermistor connection contact 2 Y1 Y2 Connection for remote RESET NO contact Y1 and Y2 jumpered Auto RESET ...

Страница 66: ...Circuit diagrams SIRIUS 3RN2 thermistor motor protection relay 66 Manual 10 2016 A5E34244868002A RS AA 001 ...

Страница 67: ...sories available for the SIRIUS 3RN2 thermistor motor protection relays Designation Graphic Article number SIRIUS terminal 2 pole screw type 1 x 2 5 mm 3ZY1122 1BA00 SIRIUS terminal 2 pole push in 1 x 2 5 mm 3ZY1122 2BA00 SIRIUS lugs for screw fastening for wall mounting Contents 12 units 3ZY1311 0AA00 Coding pins for SIRIUS terminals 3ZY1440 1AA00 ...

Страница 68: ...Spare parts accessories SIRIUS 3RN2 thermistor motor protection relay 68 Manual 10 2016 A5E34244868002A RS AA 001 ...

Страница 69: ... 7 C Cable routing 16 CAx data 8 59 Circuit diagram example 65 Commissioning 17 Compact units 35 Conductor cross section 16 Connection 33 Connections 33 Contamination 13 CSA 11 D DataMatrix code 10 Declaration of Conformity 11 Device description Benefit 24 Bimetallic switch 24 Color codes 23 General information 21 Restart temperature 22 Tripping temperature 22 Type A PTC temperature sensor 22 Devi...

Страница 70: ...s 11 Push in technology 41 R Recycling 13 Regulations 11 Repair 18 RESET 49 S Safety data 17 Safety information 13 14 Screw type terminals Connection 39 Disconnection 40 Shipbuilding approval 11 SIEMENS Industry Support App 10 Sizes 25 Spare parts 67 Spring loaded terminal Connection 42 Disconnection 44 Wiring rules 41 Standard units 35 36 Standards 11 15 T Terminal coding 28 Terminal cover 34 Ins...

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