YASKAWA L1000A Technical Manual page 268

6.3 Fault Detection
Digital Operator Display
Cause
The relay or contactor on the soft-charge bypass circuit
is damaged.
Digital Operator Display
Cause
Hardware is damaged.
<1> Displayed as or
will show or
268
Soft-Charge Bypass Circuit Fault
Uv3
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 Error
voF
Problem detected with the voltage on the output side of the drive.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa
representative.
when occurring at drive power up. When one of the faults occurs after successfully starting the drive, the display
.
Fault Name
Possible Solution
Fault Name
Possible Solution
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual