YASKAWA Z1000 User Manual page 219

HOA Keypad Display
Uv3
Cause
The relay or contactor on the soft-charge bypass
circuit is damaged
HOA Keypad Display
voF
Cause
Hardware is damaged
YASKAWA ELECTRIC TOEP C710616 45F YASKAWA AC Drive – Z1000 User Manual
Undervoltage 3 (Soft-Charge Circuit Fault)
The soft-charge bypass circuit failed.
• Cycle power to the drive and see if the fault reoccurs.
• If the problem continues, replace either the control board or the entire drive. 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 drive if U4-06 exceeds 90%. For instructions on
replacing the control board, contact Yaskawa or a Yaskawa representative.
Output Voltage Detection Fault
Problem detected with the voltage on the output side of the drive.
Replace the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or a Yaskawa representative.
5.4 Fault Detection
Fault Name
Possible Solution
Fault Name
Possible Solution
5
219