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Operating Guide | VACON® NXS/NXP Air-cooled
It is possible to set different responses in the application for this fault. See parameter group Protections.
Troubleshooting
•
Do a check of the motor cooling and loading.
•
Do a check of the thermistor connection.
•
(If thermistor input of the option board is not in use it has to be short-circuited).
12.10.77 Fault 29 - Thermistor fault, Subcode S2 - Special application
Cause
The thermistor input of option board has detected increase of the motor temperature.
It is possible to set different responses in the application for this fault. See parameter group Protections.
Troubleshooting
•
Do a check of the motor cooling and loading.
•
Do a check of the thermistor connection.
•
(If thermistor input of the option board is not in use it has to be short-circuited).
12.10.78 Fault 30 - Safe disable
Cause
The input on OPTAF board has opened.
STO inputs SD1 and SD2 are activated through the OPTAF option board.
Troubleshooting
Cancel Safe Disable if it can be done safely.
12.10.79 Fault 31 - IGBT temperature (hardware)
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.
12.10.80 Fault 32 - Fan cooling
Cause
Cooling fan of the AC drive does not start, when ON command is given.
218 | Danfoss A/S © 2020.02
Specifications
AQ275638903263en-000301 / DPD00910
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