3TK2810-1BA42-0AA0

**3TK2810-1BA42-0AA0** 

**Data sheet** 

||SIRIUS safety relay Safety-oriented Speed monitoring 24 V DC, 45 mm overall<br>width Spring-type terminal EC instantaneous: 2 NO EC delayed: 0 SC: 2 electrical<br>NAMUR version Auto-start/manual start Basic device Maximum achievable PL<br>according to EN 13849-1: e Maximum achievable SIL according to IEC 61508: 3|
|---|---|
|**product brand name**|SIRIUS|
|**product designation**|Speed monitor|
|**design of theproduct**|standstill and speed monitoring|
|**product type designation**|3TK28|
|**Product Function**<br>~~|~~||
|**product function**<br>~~|~~|~~|~~|
|● automatic start|Yes|
|● light barrier monitoring|No|
|● standstill monitoring|Yes|
|●protective door monitoring|Yes|
|● magneticallyoperated switch monitoringNC-NO|No|
|● magneticallyoperated switch monitoringNC-NC|No|
|● rotation speed monitoring|Yes|
|● laser scanner monitoring|No|
|● light arraymonitoring|No|
|● EMERGENCY OFF function|Yes|
|● monitored start-up|Yes|
|●pressure-sensitive mat monitoring|No|
|**product feature cross-circuit-proof**|Yes|
|**suitability for interactionpress control**|No|
|**suitability for use**||
|● monitoringof floatingsensors|Yes|
|● monitoringof non-floatingsensors|No|
|●position switch monitoring|Yes|
|● EMERGENCY-OFF circuit monitoring|No|
|● valve monitoring|No|
|● opto-electronicprotection device monitoring|No|
|● tactile sensor monitoring|No|
|● magneticallyoperated switch monitoring|No|
|●proximityswitch monitoring|Yes|
|● safetyswitch|Yes|
|● safety-related circuits|Yes|
|**General technical data**<br>~~|~~||
|certificate of suitabilityUL approval<br>~~|~~|Yes<br>~~|~~|
|**insulation voltage rated value**|300 V|
|**surge voltage resistance rated value**|4 000 V|
|**protection class IP**||
|● of the enclosure|IP20|
|**shock resistance**|8g/ 10 ms|
|**vibration resistance according to IEC 60068-2-6**|10 ... 55 Hz: 0.35 mm|
|electrical endurance(operatingcycles)typical|100 000|
|**Substance Prohibitance(day/month/year)**|05/01/2012|
|**SVHC substance name**|Lead CAS-No. 7439-92-1|
|**Net Weight**|0.41 kg|
|**Ambient conditions**<br>~~|~~||
|installation altitude at height above sea level maximum<br>~~|~~|2 000 m<br>~~|~~|
|● note|installation altitude: 5000 m with derating|
|**ambient temperature**||



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||● during operation|0 ... 60 °C; from an operating altitude > 2000 m, the maximum permissible<br>temperature is reduced by0.5 °C / 100 m||
|---|---|---|---|
||● duringstorage|-20 ... +70 °C||
||relative humidityduringoperation|10 ... 95 %||
||air pressure accordingto SN 31205|90 ... 106 kPa||
||**Electromagnetic compatibility**|||
||**installation environment regarding EMC**|This product is suitable for Class A environments only. In household<br>environments, this device can cause unwanted radio interference. The user is<br>required to implement appropriate measures in this case.||
||**EMC emitted interference**|EN 60947-5-1||
||**Safety related data**|||
||**stop category according to IEC 60204-1**|0||
||IEC 62061|||
||SIL Claim Limit(subsystem)accordingto EN 62061|3||
||**Safety Integrity Level(SIL) according to IEC 62061**|SIL 3||
||PFHD with high demand rate accordingto IEC 62061|3.4E-9 1/h||
||ISO 13849|||
||categoryaccordingto EN ISO 13849-1|4||
||**performance level(PL)**|||
||**● according to ISO 13849-1**|PL e||
||● for delayed release circuit accordingto ISO 13849-1|e||
||IEC 61508|||
||**Safety Integrity Level(SIL)**|||
||● accordingto IEC 61508|3||
||● for delayed release circuit accordingto IEC 61508|SIL3||
||**safety device type according to IEC 61508-2**|Type B||
||hardware fault tolerance accordingto IEC 61508|1||
||T1 value for proof test interval or service life according to IEC<br>61508|20 a||
||Electrical Safety|||
||**touch protection against electrical shock**|finger-safe||
||**Short-circuit protection**|||
||design of the fuse link for short-circuit protection of the NO<br>contacts of the relayoutputs required|gL/gG: 4 A||
||**Inputs**|||
||**design of input**|||
||● cascadinginput/functional switching|No||
||● feedback input|Yes||
||● start input|Yes||
||**number of sensor inputs**|||
||● 1-channel or 2-channel|0||
||● 2-channel|3||
||**Outputs**|||
||**number of outputs as contact-affected switching element**|||
||● as NC contact|||
||— for signalingfunction instantaneous contact|0||
||— for signalingfunction delayed switching|0||
||— safety-related instantaneous contact|0||
||— safety-related delayed switching|0||
||● as NO contact|||
||— for signalingfunction instantaneous contact|0||
||— for signalingfunction delayed switching|0||
||— safety-related instantaneous contact|1||
||— safety-related delayed switching|1||
||**mechanical service life(operating cycles) typical**|50 000 000||
||**thermal current of the switching element with contacts**<br>**maximum**|5 A||
||**number of outputs as contact-less semiconductor**<br>**switching element**|||
||● for signalingfunction|||
||— delayed switching|1||



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|— instantaneous contact|1|
|---|---|
|● safety-related||
|— delayed switching|0|
|— instantaneous contact|0|
|**switching capacity current of semiconductor outputs**||
|● for signalingfunction at DC-13 at 24 V|0.02 A|
|**switching capacity current of the NO contacts of the relay**<br>**outputs at DC-13**||
|● at 24 V|2 A|
|**switching capacity current of the NO contacts of the relay**<br>**outputs at AC-15**||
|● at 24 V|3 A|
|● at 230 V|3 A|
|**switching capacity current of the NC contacts of the relay**<br>**outputs at AC-15**||
|● at 24 V|3 A|
|● at 115 V|3 A|
|● at 230 V|2 A|
|**Encoder**||
|**encoder signal evaluation**|two signal tracks each with inverted signals|
|**type of signal level of the encoder**|optionallyTTL, HTL or sin/cos(Ua = 1Vss)|
|**type of failure response of the encoder**|high-resistance|
|**Proximity switch**||
|**measuring precision**|+-2 %|
|**switching hysteresis**|6.25 %|
|**NAMUR sensors**||
|**type of voltage of the supply voltage of NAMUR sensors**|DC|
|**supply voltage of NAMUR sensors**|8.2 V;provided bythe device|
|**switching threshold for input current at input of NAMUR**<br>**sensors**||
|● with signal <0>|1.6 mA|
|● for signal <1>|1.8 mA|
|**switching threshold for input current at input of NAMUR**<br>**sensors**||
|● for cable break maximum|0.15 mA|
|● on short circuit minimum|6 mA|
|**pulse duration of NAMUR sensors minimum**|75µs|
|**interpulseperiod of NAMUR sensors minimum**|75µs|
|**adjustment range of signal frequency of NAMUR sensors**|1 Hz ... 2 kHz|
|**Control circuit/ Control**||
|**type of voltage of the control supply voltage**|DC|
|**control supply voltage 1 at DC rated value**|24 V|
|**operating range factor control supply voltage rated value of**<br>**magnet coil at DC**||
|● initial value|0.9|
|● full-scale value|1.1|
|**Installation/ mounting/ dimensions**||
|**mounting position**|any|
|**fastening method**|screw and snap-on mounting|
|**height**|107.7 mm|
|**width**|45 mm|
|**depth**|124.3 mm|
|**Connections/ Terminals**||
|**type of electrical connection**|spring-loaded terminals|
|**type of connectable conductor cross-sections**||
|● solid|1x(0.5 ... 4 mm²)|
|● finelystranded with core endprocessing|2 x(0.25 ... 1.5 mm²)|
|● finelystranded without core endprocessing|2x(0.25 ... 1.5 mm²)|
|● for AWG cables solid|2x(24 ... 16)|
|● for AWG cables stranded|2x (20 ... 16)|



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**connectable conductor cross-section** ● solid 0.25 ... 1.5 mm² ● finely stranded with core end processing 0.25 ... 1.5 mm² ● finely stranded without core end processing 0.25 ... 1.5 mm² **AWG number as coded connectable conductor cross section** ● solid 24 ... 16 ● stranded 24 ... 16 ~~a~~ **Approvals Certificates Environment General Product Approval** Environmental Con- ~~—~~ firmations FAL «sce ~=sCUK **Functional Saftey Test Certificates other Railway** Type Examination CerSpecial Test CertificConfirmation Confirmation Confirmation tificate ate QC PASS Oo ~~— P~~ **Further information** ~~s~~ **Information on the packaging** https://support.industry.siemens.com/cs/ww/en/view/109813875 **Information for data generation and storage** https://support.industry.siemens.com/cs/ww/en/view/109995012 **Information- and Downloadcenter (Catalogs, Brochures,…)** https://www.siemens.com/ic10 **Industry Mall (Online ordering system)** https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3TK2810-1BA42-0AA0 **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3TK2810-1BA42-0AA0 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3TK2810-1BA42-0AA0 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3TK2810-1BA42-0AA0&lang=en 

**last modified:** 5/5/2026 

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