3SK1 devices
5.4 3SK1 input expansions
3SK1 safety relays
88 Manual, 04/2013, A5E02526190021A/RS-AA/01
5.4.1.3 Design
① Top cover flap
② Top cover flap; internal inscription
③ Display LEDs
④ DIP switch
⑤ SET/RESET button
⑥ Bottom cover flap
⑦ Bottom cover flap; internal inscription
⑧ DataMatrix code
⑨ Device identification label
5.4.1.4 Terminal assignment
Terminal Explanation
IN1 Sensor channel 1
IN2 Sensor channel 2
PAR NO contact/NC contact evaluation
INS ON button circuit
T1 Test output 1 (for IN1, PAR)
T2 Test output 2 (for IN2, INF)
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