Danfoss VACON NXS Series Operating Manual page 224

Operating Guide | VACON® NXS/NXP Air-cooled
12.10.102 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.
12.10.103 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.
12.10.104 Fault 43 - Encoder fault, Subcode S1 - Encoder 1 channel A is missing
Cause
Problem detected in encoder signals.
Encoder channel A is missing.
Troubleshooting
• Do a check of the encoder connections.
• Do a check of the option board.
• Measure the encoder pulses.
- If the pulses are correct, the option board is faulty.
- If the pulses are not correct, the encoder/cabling is faulty.
12.10.105 Fault 43 - Encoder fault, Subcode S2 - Encoder 1 channel B is missing
Cause
Problem detected in encoder signals.
Encoder channel B is missing.
224 | Danfoss A/S © 2020.02
Specifications
AQ275638903263en-000301 / DPD00910