What are the specifications of the STO inputs on an ATV630

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Characteristics of ATV Process STO inputs
PLC compatibility: comply 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