● For "1" to "0"
Maximum 30 ms AC
Maximum 25 ms DC
Input characteristic In accordance with IEC 61131-2; type 2
Connection of 2-wire BEROs
● Permissible quiescent current
Possible
Maximum 5 mA AC
Digital modules
4.12 Digital input module SM 421; DI 16 x UC 120/230 V (6ES7421-1FH20-0AA0)
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 125
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