Danfoss VACON NX All-in-One Application Manual page 343

VACON® NX All-in-One
Application Guide
Troubleshooting
• Check the load.
• Check the motor frame size.
• Make an identification run.
11.1.99 Fault 41 - IGBT temperature, Subcode S2 - AFE current is higher than defined EON current
limit during the grid fault
Cause
AFE EON-function current limiter (cutter) has been active longer than 50 ms during the grid fault.
Troubleshooting
Ask instructions from the factory to check the settings.
11.1.100 Fault 41 - IGBT temperature, Subcode S3 - Calculated IGBT temperature too high (long-
term protection)
Cause
IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current.
Troubleshooting
• Check the load.
• Check the motor frame size.
• Make an identification run.
11.1.101 Fault 41 - IGBT temperature, Subcode S4 - Peak current too high
Cause
IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current.
Troubleshooting
• Check the load.
• Check the motor frame size.
• Make an identification run.
11.1.102 Fault 41 - IGBT temperature, Subcode S5 - BCU: Filtered current too high for some time
Cause
IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current.
Troubleshooting
• Check the load.
• Check the motor frame size.
• Make an identification run.
11.1.103 Fault 41 - IGBT temperature, Subcode S6 - BCU: Current momentarily too high
Cause
IGBT Inverter Bridge overtemperature protection has detected too high a short-term overload current.
Troubleshooting
• Check the load.
• Check the motor frame size.
• Make an identification run.
• Check brake resistor resistance.
11.1.104 Fault 42 - Brake resistor overtemperature, Subcode S1 - Internal brake chopper overtem-
perature
Cause
Brake resistor overtemperature protection has detected too heavy braking.
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Fault Tracing
AB296635287482en-000301 / DPD00903 | 343