YASKAWA P1000 Quick Start Manual page 145

Control power supply wiring is damaged
Internal circuitry is damaged
Digital Operator Display
<1>
<1> Detected in models 4A0930 and 4A1200.
Cause
The output current of the drive has been
elevated for a set length of time.
YASKAWA ELECTRIC TOEP YAIP1U 01B YASKAWA AC Drive - P1000 Quick Start Guide
• Cycle power to the drive. Check if the fault reoccurs.
• If the problem continues, replace the control board, the entire drive, or the control power supply. For
instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
• Cycle power to the drive. Check 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.
Undervoltage 3 (Soft-Charge Bypass Relay Fault)
Uv3
The soft-charge bypass relay failed.
Gate Drive Board Undervoltage
Uv4
Voltage drop in the gate drive board circuit
Output Voltage Detection Fault
voF
Problem detected with the voltage on the output side of the drive.
vToL VT Overload
The application may not be suited for the drive
• The application may not be suited for the drive
• The drive is undersized for the load
Fault Name
Possible Solution
5.2 Fault Detection
5
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