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VACON® 1000
Operating Guide
System default operation: Coast stop
Troubleshooting
•
Check the fault record.
10.3.29 Fault Code 29 - Flying Start Failure
Cause
During flying start, a speed search failure occurs or any other fault is generated.
System default operation: Coast stop
Troubleshooting
•
If a speed search failure caused the flying start failure, check the parameter of the flying start result for the reason for the flying
start failure.
•
If some other fault caused the flying start failure, check the fault record.
10.3.30 Fault Code 30 - Automatic Restart Failure
Cause
During the trial time of the automatic restart, the number of faults is higher than the maximum number of trials, or a permanent
fault occurs.
System default operation: Trip
Troubleshooting
•
Check the fault record.
10.3.31 Fault Code 31 - Synchronous Transfer Failure
Cause
One of the following occurs during synchronous transfer:
•
Switch status/close/open failure.
•
Speed stable timeout. Caused by load fluctuation, which can occur during acceleration to grid frequency in the drive to grid
synchronization process.
•
Voltage synchronous timeout. Caused by electric network fluctuation, which can occur during the voltage synchronization
process.
•
Load transfer timeout. Caused by load fluctuation, which can occur during the load transfer process.
System default operation: Trip
Troubleshooting
•
If there is a switch status/close/open failure:
-
Check the status of the switches.
-
Check the wiring of the digital inputs/outputs.
-
Make sure that there are no problems with the breaker.
•
If there is a speed stable timeout, modify parameter "Speed err threshold of synchronous transfer" (P0772).
•
If there is a voltage synchronous timeout, modify one of these parameters:
-
"Phase error threshold of synchronous transfer" (P0767)
-
"Voltage error threshold of synchronous transfer" (P0771)
-
"Maximum voltage synchronize time of synchronous transfer" (P0778)
•
If there is a load transfer timeout, modify one of these parameters:
-
"Current error threshold of synchronous transfer" (P0353)
-
"Maximum load transfer time of synchronous transfer" (P0779)
10.3.32 Fault Code 32 - Failure Of Motor Selection
Cause
The serial number of selected motor is wrong.
Danfoss A/S © 2021.06
Fault Tracing
AQ363633621020en-000201 / 172F3117 | 99
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