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What are the specifications for the STO inputs on the ATV Process drives?

Published date: 14 May 2018

Issue:   
What are the specifications for the STO inputs on the ATV Process drives?
 
Product Line:   
Altivar Process Drives
 
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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