Video: How do the ATV31/ATV312 logic inputs work when the VFD is in SINK mode?
Issue:
Programming and wiring logic inputs in SINK mode on Altivar 312 or Altivar 31 (ATV312/ATV31) Variable Frequency Drives (VFD).
Product Line:
ATV31 and ATV312
Environment:
All model
Cause:
Developing control scheme
Resolution:
The VFD is in sink mode when the control board DIP switch is in the SINK position.
Internally, the sinking mode connects the logic inputs to the +24V as the common. A logic input is turned on by connecting it to the COM by means of a dry contact.
Note: When the logic inputs are configured for sink logic, grounding an input signal can result in unintended activation of drive controller functions.
Programming and wiring logic inputs in SINK mode on Altivar 312 or Altivar 31 (ATV312/ATV31) Variable Frequency Drives (VFD).
Product Line:
ATV31 and ATV312
Environment:
All model
Cause:
Developing control scheme
Resolution:
The VFD is in sink mode when the control board DIP switch is in the SINK position.
Internally, the sinking mode connects the logic inputs to the +24V as the common. A logic input is turned on by connecting it to the COM by means of a dry contact.
Note: When the logic inputs are configured for sink logic, grounding an input signal can result in unintended activation of drive controller functions.
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