YASKAWA D1000 Series Instruction Manual page 117

Digital Operator
Fault Name
Display
Gate Drive Board
Uv4
<2>
Undervoltage
Cause
Not enough power is being supplied to the gate
drive board.
Digital Operator
Fault Name
Display
vrE Resonance Detection
Cause
The power supply was turned off during
operation.
There is noise on the power supply line.
A phase was lost for an input terminal during
operation.
<1> If the fault occurs when starting the converter, CPF00 or CPF20 is displayed. If it occurs during operation, CPF01 or CPF21 is displayed.
<2> Detected in model 4A0630.
YASKAWA ELECTRIC TOEP C710656 07A YASKAWA Power Regenerative Converter - D1000 Instruction Manual
Voltage drop in the gate drive board circuit
• Cycle power to the converter and see if the fault reoccurs. Refer to
Faults on page 129 for details.
• If the problem continues, replace either the gate drive board or the entire converter. For
instructions on replacing the gate drive board, contact Yaskawa or a Yaskawa representative.
A filter resonance fault was detected or there is a harmonic component on the power supply side.
Stop the operation of the converter and turn off the power supply.
Investigate the source of the noise and implement countermeasures.
Check the wiring of the power supply system and remove the cause of the phase loss.
Details
Possible Solution
Diagnosing and Resetting
Details
Possible Solution
5.2 Fault Detection
5
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