Danfoss VACON NXS Series Operating Manual page 223

Operating Guide | VACON® NXS/NXP Air-cooled
Troubleshooting
• Check the load.
• Check the motor frame size.
• Make an identification run.
• Check brake resistor resistance.
12.10.99 Fault 42 - Brake resistor overtemperature, Subcode S1 - Internal brake chopper
overtemperature
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.
12.10.100 Fault 42 - Brake resistor overtemperature, Subcode S2 - Brake resistance too high (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 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.
Danfoss A/S © 2020.02
Specifications
AQ275638903263en-000301 / DPD00910| 223