Danfoss VACON 1000 - Page 104

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System default operation: Coast stop
Troubleshooting
Check if the input high voltage exists.
Check that the internal cabling is firm and correct.
10.3.56 Fault Code 56 - Upstream Main Circuit Breaker Open Failure
Cause
The upstream main circuit breaker did not open in over 3 s after receiving the opening signal.
System default operation: Alarm
Troubleshooting
Check if the input high voltage exists.
Check that the internal cabling is firm and correct.
Check if the opening command is sent correctly.
10.3.57 Fault Code 57 - Startup Cabinet Switch Abnormal Open
Cause
After the drive high voltage is on and the start-up cabinet switch is closed, the start-up cabinet switch opens unexpectedly before
the upstream main circuit breaker opens.
System default operation: Trip
Troubleshooting
Check that the startup cabinet switch is normal.
Check that the internal cabling is firm and correct.
10.3.58 Fault Code 58 - Startup Cabinet Switch Open Failure
Cause
The start-up cabinet switch did not open in over 3 s after receiving the opening signal.
System default operation: Trip
Troubleshooting
Check that the start-up cabinet switch is normal.
Check that the internal cabling is firm and correct.
10.3.59 Fault Code 59 - Startup Cabinet Switch Close Failure
Cause
The start-up cabinet switch did not close in over 3 s after receiving the closing signal.
System default operation: Trip
Troubleshooting
Check that the start-up cabinet switch is normal.
Check that the internal cabling is firm and correct.
10.3.60 Fault Code 60 - PLC–DSP Communication failure
Cause
Unable to close start-up cabinet. After the drive high voltage is on, and before the start-up cabinet switch is closed, the PLC discon-
nects with the main control system.
System default operation: Trip
Troubleshooting
Check the wiring of the communication circuit.
10.3.61 Fault Code 61 - Auto Bypass Failure
Cause
Bypass cabinet switches did not operate correctly after receiving auto bypass signal.
AQ363633621020en-000201 / 172F3117104 | Danfoss A/S © 2021.06
Fault Tracing
VACON® 1000
Operating Guide