Danfoss VACON 1000 Operating Manual page 105

VACON® 1000
Operating Guide
System default operation: Trip
Troubleshooting
• Check that the bypass cabinet switch is normal.
• Check that the internal cabling is firm and correct.
10.3.62 Fault Code 62 - Auto Bypass Condition is not Satisfied
Cause
The operation status of the drive does not meet the bypass condition.
System default operation: Trip
Troubleshooting
• None.
10.3.63 Fault Code 63 - External Fault
Cause
To realize an external motor protection, the motor protection relay can be connected to one preset protection input of the drive.
System default operation: Coast stop. System operation is configurable.
Troubleshooting
• Check if the user terminal has fault signal output.
• Check that the wiring of the signal circuit is correct.
10.3.64 Fault Code 64 - Power Cell DC-link Undervoltage
Cause
The DC-link voltage is higher than 300 V, but lower than 580 V.
System default operation: Alarm
Troubleshooting
• Check if the high-voltage input is lower than the minimum allowed value.
• Check if the 3-phase input to the power cell is loose.
• Check that the fuse is in good condition.
10.3.65 Fault Code 65 - Power Cell Overtemperature
Cause
If the temperature of the cooling heat sink near the IGBT is higher than the designed value, the normally closed contact of the tem-
perature sensor switch is disconnected.
System default operation: Trip. System operation is configurable.
Troubleshooting
• Check if the ambient temperature exceeds the allowed value.
• Check that the cooling fan on the top of the cabinet is working normally.
• Check if the inlet air filter is clogged.
• Check if the drive is in overload operation for a long time.
• Check that the power cell temperature relay works normally.
10.3.66 Fault Code 66 - Power Cell IGBT Driver Fault
Cause
The IGBT has a failure.
System default operation: Trip. System operation is configurable.
Troubleshooting
• Check that the power cell fault indicator is working normally.
10.3.67 Fault Code 67 - Power Cell Input Phase Loss
Cause
One of the three input phases is lost.
Danfoss A/S © 2021.06
Fault Tracing
AQ363633621020en-000201 / 172F3117 | 105