Issue:
Looking for the specifications for the STO inputs, on the ATV Process drives?

Product Line:
Altivar Process Drives
ATV630
ATV930

Environment:
All

Cause:
STO inputs specifications

Resolution:
Characteristics of ATV Process STO inputs
PLC compatibility:  complies with IEC/EN61131-2 logic type 1 and type 3, for voltage levels
Positive logic (Source):
State 0 if  ≤ 5Vdc or STO not wired,
State 1 if ≥ 11Vdc
Impedance: ≥ 2.2kΩ
Maximum current:      10mA min at 19V input for external (Preventa) Relay
Response time: 10ms

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