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11.1.43 Fault 8 - System fault, Subcode S70 - False fault activated
Cause
Fault in application.
Troubleshooting
Ask instructions from the local distributor.
11.1.44 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.
It is possible to set different responses in the application for this fault. See parameter group Protections.
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.
11.1.45 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.
It is possible to set different responses in the application for this fault. See parameter group Protections.
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.
11.1.46 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.
It is possible to set different responses in the application for this fault. See parameter group Protections.
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.
11.1.47 Fault 10 - Input line supervision, Subcode S1 - Phase supervision diode supply
Cause
The input line phase is missing.
It is possible to set different responses in the application for this fault. See parameter group Protections.
AB296635287482en-000301 / DPD00903
334 | Danfoss A/S © 2023.02
Fault Tracing
VACON® NX All-in-One
Application Guide
Summary of Contents for VACON NX
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