Issue:
Customer is experiencing buFo [DB unit op. circuit] fault on an ATV340 series drives.
Product line:
ATV340
Environment:
External Braking resistor is in use.
Cause:
Customer is experiencing buFo [DB unit op. circuit] fault on an ATV340 series drives.
Product line:
ATV340
Environment:
External Braking resistor is in use.
Cause:
 Open-circuit from braking circuit.
  Braking resistor not connected.
Resolution:
 Resolution:
 Verify the wiring of the braking resistor.
  Verify that the braking resistor ohmic value is not too high.