3SK1122-1CB42

**3SK1122-1CB42** 

**Data sheet** 

SIRIUS safety relay Basic unit Advanced series with time delay 0.5-30 s electronic enabling circuits 2 NO instantaneous 2 NO delayed Us = 24 V DC screw terminal 

|SIRIUS safety relay Basic unit Advanced series with time delay 0.5-30 s electronic<br>enabling circuits 2 NO instantaneous 2 NO delayed Us = 24 V DC screw terminal<br>**product brand name**<br>SIRIUS<br>**product category**<br>Safetyrelays<br>**product designation**<br>safetyrelays<br>**design of theproduct**<br>Solid-state enablingcircuits<br>**product type designation**<br>3SK1<br>**product line**<br>Advanced basic unit<br>**Product Function**<br>**product function parameterizable**<br>sensor floating / sensor non-floating, monitored start-up / automatic start, 1-<br>channel / 2-channel sensor connection, cross-circuit detection, startup testing,<br>antivalent sensors, 2-hand switches, time delay<br>**product function**<br>● automatic start<br>Yes<br>● light barrier monitoring<br>Yes<br>●protective door monitoring<br>Yes<br>● magneticallyoperated switch monitoringNC-NO<br>Yes<br>● magneticallyoperated switch monitoringNC-NC<br>Yes<br>● laser scanner monitoring<br>Yes<br>● light arraymonitoring<br>Yes<br>● EMERGENCY OFF function<br>Yes<br>● monitored start-up<br>Yes<br>●pressure-sensitive mat monitoring<br>No<br>**product feature cross-circuit-proof**<br>Yes<br>**suitability for interactionpress control**<br>Yes<br>**suitability for operation device connector 3ZY12**<br>Yes<br>**suitability for use**<br>● monitoringof floatingsensors<br>Yes<br>● monitoringof non-floatingsensors<br>Yes<br>●position switch monitoring<br>Yes<br>● EMERGENCY-OFF circuit monitoring<br>Yes<br>● opto-electronicprotection device monitoring<br>Yes<br>● magneticallyoperated switch monitoring<br>Yes<br>● safetyswitch<br>Yes<br>● safety-related circuits<br>Yes<br>**General technical data**<br>certificate of suitabilityUL approval<br>Yes<br>**power loss[W] maximum**<br>2 W<br>**insulation voltage rated value**<br>50 V<br>**degree ofpollution**<br>3<br>**overvoltage category**<br>3<br>**surge voltage resistance rated value**<br>800 V<br>~~|~~<br>~~|~~|SIRIUS safety relay Basic unit Advanced series with time delay 0.5-30 s electronic<br>enabling circuits 2 NO instantaneous 2 NO delayed Us = 24 V DC screw terminal||
|---|---|---|
||SIRIUS||
||Safetyrelays||
||safetyrelays||
||Solid-state enablingcircuits||
||3SK1||
||Advanced basic unit||
||Yes<br>~~|~~||
||2 W||
||50 V||
||3||
||3||
||800 V||



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|protection class IP of the enclosure|IP20|
|---|---|
|**shock resistance**|10g/ 11 ms|
|**vibration resistance according to IEC 60068-2-6**|5 ... 500 Hz: 0.75 mm|
|**operating frequency maximum**|2 000 1/h|
|**reference code according to IEC 81346-2**|F|
|**Substance Prohibitance(day/month/year)**|11/05/2012|
|**SVHC substance name**|Lead CAS-No. 7439-92-1<br>Lead monoxide (lead oxide) CAS-No. 1317-36-8<br>2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-<br>10-5<br>Melamine CAS-No. 108-78-1<br>6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol CAS-No. 119-47-1|
|**Net Weight**|0.196 kg|
|**Ambient conditions**||
|installation altitude at height above sea level maximum|4 000 m|
|● note|Derating, see Product Notification 109792701|
|**ambient temperature**||
|● duringoperation|-25 ... +60 °C|
|● duringstorage|-40 ... +80 °C|
|relative humidityduringoperation|10 ... 95 %|
|air pressure accordingto SN 31205|900 ... 1 060 hPa|
|**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**|IEC 60947-5-1, Class A|
|**Safety related data**||
|product function suitable for safetyfunction|Yes|
|**safe state**|Safetyoutputs switched off|
|**test wear-related service life necessary**|No|
|**diagnostics test interval by internal test function maximum**|600 s|
|**stop category according to IEC 60204-1**|0 / 1|
|IEC 62061||
|SIL Claim Limit(subsystem)accordingto EN 62061|3|
|**Safety Integrity Level(SIL)**||
|**● according to IEC 62061**|SIL 3|
|● at single-channel evaluation accordingto IEC 62061|1|
|● at 2-channel evaluation accordingto IEC 62061|3|
|**PFHD with high demand rate according to IEC 62061**|0,0000000015|
|ISO 13849||
|categoryaccordingto EN ISO 13849-1|4|
|**performance level(PL)**||
|**● according to ISO 13849-1**|PL e|
|● at single-channel evaluation accordingto ISO 13849-1|c|
|● at 2-channel evaluation accordingto ISO 13849-1|e|
|● for delayed release circuit accordingto ISO 13849-1|e|
|**category**||
|**● according to ISO 13849-1**|4|
|● at 2-channel evaluation accordingto ISO 13849-1|4|
|**overdimensioning according to ISO 13849-2 necessary**|No|
|IEC 61508||
|**Safety Integrity Level(SIL)**||
|● accordingto IEC 61508|3|
|● for delayed release circuit accordingto IEC 61508|SIL3|
|● at single-channel evaluation accordingto IEC 61508|1|
|● at 2-channel evaluation accordingto IEC 61508|3|
|**safety device type according to IEC 61508-2**|Type B|
|**Safe failure fraction(SFF)**|99 %|
|**hardware fault tolerance**||
|● accordingto IEC 61508|1|
|● at single-channel evaluation according to IEC 61508|0|



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||● at 2-channel evaluation accordingto IEC 61508|1||
|---|---|---|---|
||**T1 value**|||
||● of service life accordingto IEC 61508|20 a||
||● 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 contacts of the relay<br>outputs required|not required||
||**Inputs**|||
||**design of input**|||
||● cascadinginput/functional switching|Yes||
||● feedback input|Yes||
||● start input|Yes||
||pulse duration of the sensor input minimum|60 ms||
||number of sensor inputs 1-channel or 2-channel|1||
||**Outputs**|||
||**number of outputs as contact-affected switching element**|||
||● as NO contact|||
||— safety-related instantaneous contact|0||
||— safety-related delayed switching|0||
||**number of outputs as contact-less semiconductor**<br>**switching element**|||
||● for signalingfunction|||
||— instantaneous contact|0||
||● safety-related|||
||— delayed switching|2||
||— instantaneous contact|2||
||switching capacity current of semiconductor outputs at DC-13 at<br>24 V|2 A||
||**Times**|||
||**make time with automatic start**|||
||● at DC maximum|85 ms||
||**make time with automatic start afterpower failure**|||
||● typical|6 500 ms||
||● maximum|6 500 ms||
||**make time with monitored start**|||
||● maximum|85 ms||
||**backslide delay time after opening of the safety circuits**<br>**typical**|40 ms||
||**adjustable OFF-delay time after opening of the safety**<br>**circuits**|0.5 ... 30 s||
||**recovery time after opening of the safety circuits typical**|30 ms||
||**recovery time afterpower failure typical**|6.5 s||
||**pulse duration**|||
||● of the ON pushbutton input minimum|0.15 s||
||**Control circuit/ Control**|||
||**type of voltage of the control supply voltage**|DC||
||**control supply voltage at DC rated value**|24 V||
||**operating range factor control supply voltage rated value of**<br>**magnet coil at DC**|||
||● initial value|0.8||
||● full-scale value|1.2||
||**Installation/ mounting/ dimensions**|||
||**mounting position**|any||
||**fastening method**|screw and snap-on mounting||
||**height**|100 mm||
||**width**|22.5 mm||
||**depth**|121.5 mm||



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## **required spacing** 

|● forgrounded parts at the side||5 mm|5 mm||||||
|---|---|---|---|---|---|---|---|---|
|**Connections/ Terminals**<br>~~er~~|||||||||
|**type of electrical connection**||screw terminal||screw terminal|||||
|**wire length**|||||||||
|● with Cu 1.5 mm² and 150 nF/km per sensor circuit||4 000 m||4 000 m|||||
|maximum|||||||||
|**type of connectable conductor cross-sections**|||||||||
|● solid||1x(0.5 ... 2.5 mm²), 2x(1.0 ... 1.5 mm²|||1.0 ... 1.5 mm²)||||
|● finelystranded with core endprocessing||1x(0.5 ... 2.5 mm²), 2x(0.5 ... 1.0 mm²|||0.5 ... 1.0 mm²)||||
|● for AWG cables solid||1x(20 ... 14||20 ... 14), 2x(18 ... 16)|||||
|● for AWG cables stranded||1x(20 ... 16||20 ... 16), 2x(20 ... 16)|||||
|**type of electrical connection plug-in socket**||No|||||||
|**Approvals Certificates**<br>~~a~~|||||||||
|**Environment**|**General Product Approval**||||||||
|Environmental Con-|||||||||
|firmations|||||||||
|**General Product Ap-**<br>**proval**<br>**EMV**||||**Functional Saftey**||**Test Certificates**|**Maritime application**||
|||||Type Examination Cer-||Type Test Certific-|||
|||||tificate||ates/Test Report|||
|**Maritime application**||||**other**|||||
|Confirmation<br>Confirmation<br>~~=~~<br>~~Oo~~|||||||||
|**Railway**|||||||||
|Confirmation|||||||||



~~e~~ **Further information** ~~e~~ **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=3SK1122-1CB42 **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3SK1122-1CB42 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3SK1122-1CB42 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3SK1122-1CB42&lang=en 

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-K<br>1 | Autostart / Monitored Start<br>Logic<br>2 | Cross fault detection OFF / ON<br>3 | 2 single-ch. sensors / 1 double-ch. sensor<br>4 | Startup Test yes / no<br>SET / RESET<br>A1+ INK IN1 T1 PAR IN2 T2 INF INS<br>SYS<br>2- 1 2 t1 t2<br>A Q Q Q Q<br>**----- End of picture text -----**<br>


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