YASKAWA Z1000 User Manual page 215

Digital Operator Display
Cause
The relay or contactor on the soft-charge
bypass relay is damaged
Digital Operator Display
Cause
Hardware is damaged. Internal drive module
MC / FAN overheat protection circuit board is
due to abnormal ambient operating power.
YASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual
Undervoltage 3 (Soft-Charge Bypass Relay Fault)
Uv3
The soft-charge bypass relay failed.
• Cycle power to the drive and see if the fault reoccurs.
• Check monitor U4-06 for the performance life of the soft-charge bypass relay.
• Replace either the control board or the entire drive if U4-06 exceeds 90%. For instructions on replacing
the control board, contact Yaskawa or a Yaskawa representative.
Output Voltage Detection Fault
voF
Problem detected with the voltage on the output side of the drive.
• Lower ambient temperature.
• Replace the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or a Yaskawa representative.
Fault Name
Possible Solution
Fault Name
Possible Solution
5.4 Fault Detection
5
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