Technical data
13.3 Expansion modules
3SK1 safety relays
Manual, 04/2013, A5E02526190021A/RS-AA/01
237
13.3.2 Input expansions
13.3.2.1 Technical data for input expansion 3SK1220
3SK1220-.....
Insulation voltage rated value V 50
Resistance against shock 10g / 11 ms
Number of sensor inputs 1-channel or 2-channel 1
Type of the safety-related wiring of the inputs single-channel and two-channel
Product feature transverse contact-secure Yes
Safety Integrity Level (SIL) according to IEC 61508 SIL3
SIL claim limit (for a subsystem) according to EN 62061 3
Performance level (PL) according to ISO 13849-1 e
Category according to ISO 13849-1 4
T1 value for proof test interval or service life according to
IEC 61508
a 20
Safety device type according to IEC 61508-2 Type B
Number of outputs as contact-affected switching element
• as NC contact for reporting function instantaneous switching
0
• as NO contact for reporting function instantaneous switching
0
• as NC contact for reporting function delayed switching
0
• as NO contact for reporting function delayed switching
0
• as NC contact safety-related instantaneous switching
0
• as NO contact safety-related instantaneous switching
0
• as NC contact safety-related delayed switching
0
• as NO contact safety-related delayed switching
0
Stop category according to DIN EN 60204-1
0
Design of the input start input Yes
Design of the electrical connection jumper socket No
Operating cycles maximum 1/h —
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