5.3.5.3 Design of 3SK1211-.BB40
① Top cover ap
② Top cover ap; internal inscription
③ Display LEDs
④ Slide switch
⑤ Bottom cover ap
⑥ Bottom cover ap; internal inscription
⑦ DataMatrix code
⑧ Device identication label
5.3.5.4 Terminal assignment
Terminal Explanation
A1 + (L+ for 3SK1211-.BW20)
A2 - (N- for 3SK1211-.BW20)
13 - 14 Safety-related output 1 (NO contact, relay contact)
3SK1 / 3RQ1 devices
5.3 3SK1 output expansions
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005 93
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