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Chapter 6 Fault Code Information and Maintenance|
Revision Nov. 2008, VLE1, SW V1.03 6-3
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Description
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Ground fault
Corrective Actions:
When (one of) the output terminal(s) is grounded, short
circuit current is more than 50% of AC motor drive rated
current, the AC motor drive power module may be damaged.
NOTE: The short circuit protection is provided for AC
motor drive protection, not for protection of the user.
1. Check the wiring connections between the AC motor
drive and motor for possible short circuits, also to
ground.
2. Check whether the IGBT power module is damaged.
3. Check for possible poor insulation at the output line.
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Short-circuit is detected between upper bridge and lower
bridge of the IGBT module.
Corrective Actions:
Return to the factory
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Over-current at stop
Corrective Actions:
Return to the factory
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DC BUS over-voltage during acceleration (230V: DC 450V;
460V: DC 900V)
Corrective Actions:
1. Check if the input voltage falls within the rated AC
motor drive input voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage,
please increase the Deceleration Time or add an
optional brake resistor.
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C
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DC BUS over-voltage during deceleration (230V: DC 450V;
460V: DC 900V)
Corrective Actions:
1. Check if the input voltage falls within the rated AC
motor drive input voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage,
please increase the Deceleration Time or add an
optional brake resistor.
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DC BUS over-voltage during constant speed (230V: DC
450V; 460V: DC 900V)
Corrective Actions:
1. Check if the input voltage falls within the rated AC
motor drive input voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage,
please increase the Deceleration Time or add an
optional brake resistor.