YASKAWA CIMR-DC4A0040AAA Technical Manual page 110

5.3 Fault Detection
The main circuit capacitor circuit in the
converter has deteriorated.
The operation of the relay or contactor in the
inrush current protection circuit in the converter
failed.
A fault occurred in the power supply device.
A fault occurred in the power supply.
A fault occurred in power supply voltage
detection.
Digital Operator
Display
Control Power Supply
Uv2
Cause
Internal circuitry is damaged.
Digital Operator
Display
Undervoltage 3
(Soft-Charge Bypass
Uv3
Cause
The relay or contactor on the soft-charge
bypass circuit is damaged.
Digital Operator
Display
Gate Drive Board
Uv4
<2>
Cause
Not enough power is being supplied to the gate
drive board.
Digital Operator
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.
110
Check the maintenance period for the capacitor in U4-05 (Capacitor Maintenance).
If the value of U4-05 has exceeded 90%, replace the board or the converter. For information on
board replacement, consult with your Yaskawa representative or the nearest Yaskawa sales office.
Cycle the power supply and see if the fault occurs again.
• If the fault occurs repeatedly, replace the board or the converter. For information on board
replacement, consult with your Yaskawa representative or the nearest Yaskawa sales office.
Check the maintenance period for the inrush prevention relay in U4-06 (Soft Charge Bypass
Relay Maintenance).
• If the value of U4-06 has exceeded 90%, replace the board or the converter. For information on
board replacement, consult with your Yaskawa representative or the nearest Yaskawa sales
office.
Check the wiring of the power supply device.
Correct the wiring.
A fault occurred in the power supply.
Check the wiring.
Correct the wiring.
Fault Name
Voltage is too low for the control converter input power.
Voltage Fault
• Cycle power to the converter. Check if the fault reoccurs.
• If the problem continues, replace either the control board or the entire converter. For
instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
Fault Name
The soft-charge bypass circuit failed.
Circuit Fault)
• Cycle power to the converter and see if the fault reoccurs.
• If the problem continues, replace either the control board or the entire converter. For
instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
• Check monitor U4-06 for the performance life of the soft-charge bypass.
• Replace either the control board or the entire converter if U4-06 exceeds 90%. For instructions
on replacing the control board, contact Yaskawa or a Yaskawa representative.
Fault Name
Voltage drop in the gate drive board circuit
Undervoltage
• Cycle power to the converter and see if the fault reoccurs. Refer to
Faults on page 121
• 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.
Fault Name
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.
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Details
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Details
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for details.
Details
Possible Solution
Diagnosing and Resetting