Danfoss VACON NXP IP00 - Page 158

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Troubleshooting
Correct the parameter P7.2.1.1 Therm Trip (HW) to match the X12 jumper setting.
12.12.39 Fault 8 - System fault, Subcode S50 - OPTAF: Filter discharge resistor fault
Cause
Problem with the control board.
Troubleshooting
Ask instructions from the local distributor.
12.12.40 Fault 8 - System fault, Subcode S70 - False fault activated
Cause
Fault in application.
Troubleshooting
Ask instructions from the local distributor.
12.12.41 Fault 9 - Undervoltage, Subcode S1 - DC-link too low during run
Cause
The DC-link voltage is lower than the limits.
Too low a supply voltage
AC drive internal fault
A defective input fuse
The external charge switch is not closed.
Troubleshooting
If there is a temporary supply voltage break, reset the fault and start the drive again.
Do a check of the supply voltage. If the supply voltage is sufficient, there is an internal fault.
Ask instructions from the local distributor.
12.12.42 Fault 9 - Undervoltage, Subcode S2 - No data from power unit
Cause
The DC-link voltage is lower than the limits.
Too low a supply voltage
AC drive internal fault
a defective input fuse
the external charge switch is not closed.
Troubleshooting
If there is a temporary supply voltage break, reset the fault and start the drive again.
Do a check of the supply voltage. If the supply voltage is sufficient, there is an internal fault.
Ask instructions from the local distributor.
12.12.43 Fault 9 - Undervoltage, Subcode S3 - Undervoltage control supervision
Cause
The DC-link voltage is lower than the limits.
Too low a supply voltage
AC drive internal fault
A defective input fuse
The external charge switch is not closed.
Troubleshooting
If there is a temporary supply voltage break, reset the fault and start the drive again.
Do a check of the supply voltage. If the supply voltage is sufficient, there is an internal fault.
Ask instructions from the local distributor.
AQ351737303996en-000201 / DPD00888158 | Danfoss A/S © 2023.09
Specifications
VACON® NXP IP00 Drive Modules
Operating Guide