Danfoss VACON NXS Series Operating Manual page 209

Operating Guide | VACON® NXS/NXP Air-cooled
• 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.
12.10.44 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.
12.10.45 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.
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Specifications
AQ275638903263en-000301 / DPD00910| 209