Technical data
13.3 Expansion modules
3SK1 safety relays
240 Manual, 04/2013, A5E02526190021A/RS-AA/01
3SK1220-.....
Contact reliability of the auxiliary contacts —
Product function parameterizable Sensor floating / sensor non-floating,
monitored start / autostart, 1-channel
/ 2-channel sensor connection, cross-
circuit detection, startup testing,
antivalent sensors, 2-hand switches
Suitability for interaction pressing control No
Suitability for use device connector 3ZY12 Yes
Suitability for use
• monitoring of floating sensors
Yes
• monitoring of non-floating sensors
Yes
• safety cut-out switch
Yes
• magnetically operated switches monitoring
Yes
• safety-related circuits
Yes
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