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Operating Guide | VACON® NX Inverters FI4-FI8
12.10.100 Fault 42 - Brake resistor overtemperature, Subcode S3 - Brake resistance too low (BCU)
Cause
Brake resistor overtemperature protection has detected too heavy braking.
Troubleshooting
•
Reset unit.
•
Set the deceleration time longer.
•
Dimensioning of the brake chopper is not correct.
•
Use external brake resistor.
12.10.101 Fault 42 - Brake resistor overtemperature, Subcode S4 - Brake resistance not detected
(BCU)
Cause
Brake resistor overtemperature protection has detected too heavy braking.
Troubleshooting
•
Reset unit.
•
Set the deceleration time longer.
•
Dimensioning of the brake chopper is not correct.
•
Use external brake resistor.
12.10.102 Fault 42 - Brake resistor overtemperature, Subcode S5 - Brake resistance leakage (earth
fault) (BCU)
Cause
Brake resistor overtemperature protection has detected too heavy braking.
Troubleshooting
•
Reset unit.
•
Set the deceleration time longer.
•
Dimensioning of the brake chopper is not correct.
•
Use external brake resistor.
12.10.103 Fault 43 - Encoder fault, Subcode S1 - Encoder 1 channel A is missing
Cause
Problem detected in encoder signals.
Encoder channel A is missing.
Danfoss A/S © 2019.07
Specifications
AQ299433367205en-000101 / DPD00908| 151
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