YASKAWA P1000 Technical Manual page 310

6.4 Fault Detection
Digital Operator Display
<1>
Cause
Not enough power is being supplied to the gate
drive board.
<1> Detected in models 4A0930 and 4A1200.
Digital Operator Display
Cause
Hardware is damaged. Internal drive module
MC / FAN overheat protection circuit board is
due to abnormal ambient operating power.
Digital Operator Display
Cause
The output current of the drive has been
elevated for a set length of time.
310
Gate Drive Board Undervoltage
Uv4
Voltage drop in the gate drive board circuit
• Cycle power to the drive and see if the fault reoccurs.
page 327 for details.
• If the problem continues, replace either the gate drive board or the entire drive. For instructions on
replacing the gate drive 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.
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
Refer to Diagnosing and Resetting Faults on
Fault Name
Possible Solution
Fault Name
Possible Solution
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual