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VACON® 1000
Operating Guide
10.3.38 Fault Code 38 - External/Customer Control Power Loss
Cause
The external control power is lost.
System default operation: Alarm
Troubleshooting
•
Check the wiring and voltage of the external control power.
•
Check that the corresponding switches are closed.
•
Check that the corresponding relays work normally.
10.3.39 Fault Code 39 - Control Power Loss Overtime
Cause
Both the external control power and the back-up power from the phase-shift transformer are lost simultaneously for more than
30 minutes.
System default operation: Trip
Troubleshooting
•
Check the wiring and voltage of the external control power.
•
Check the wiring and voltage of the internal back-up control power.
•
Check that the corresponding switches are closed.
•
Check that the corresponding relays work normally.
10.3.40 Fault Code 40 - UPS Undervoltage
Cause
The fault information is reported when the battery voltage is low.
System default operation: Alarm
Troubleshooting
•
Check if the voltage of each battery is above 12 V.
•
Check if the switch mode power supply module output voltage is 26 V.
10.3.41 Fault Code 41 - UPS Undervoltage Overtime
Cause
After the external control power and the back-up power from the phase-shift transformer are lost, the UPS undervoltage occurs for
over 1 minute.
System default operation: Trip
Troubleshooting
•
Check the wiring and voltage of the external control power.
•
Check the wiring and voltage of the internal back-up control power.
•
Check that the corresponding switches are closed.
•
Check that the corresponding relays work normally.
•
Find the reasons for UPS failure and restore the supply as soon as possible.
10.3.42 Fault Code 42 - HV Cabinet Door Open
Cause
The high-voltage cabinet door is open.
System default operation: Trip
•
If the drive cabinet door is open before the high-voltage power-on, the closing allowed signal cannot be sent.
•
If the drive cabinet door is opened during operation, the system stops immediately.
Troubleshooting
•
Check the state of the drive cabinet doors.
•
Check the position switch of the cabinet door and its contacts.
Danfoss A/S © 2021.06
Fault Tracing
AQ363633621020en-000201 / 172F3117 | 101
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