8 Troubleshooting
YASKAWA Europe
TOEP C710606 50B - AC Drive L1000V - Quick Start Guide
EN 47
Operator Programming Errors
An Operator Programming Error (oPE) occurs when an inapplicable parameter is set or an
individual parameter setting is inappropriate. When an oPE error is displayed, press the
ENTER button to display U1-18. Monitor U1-18 will display the parameter that is causing
the oPE error.
Starting
Current Error
• The output current was lower than 25% of
the motor no-load current at start.
• Check the motor wiring.
• Check the motor contactor and the contac-
tor sequence. Make sure it closes properly
during start.
Output Current
Error
• The output current was lower than 25% of
the motor no-load current during operation.
• Check the motor wiring.
• Check the motor contactor and the contac-
tor sequence. Make sure does not open
during operation.
Brake
Response
Error
The brake close command was set but he sta-
tus of the brake feedback signal did not
change.
• Make sure the brake works properly.
• Check the brake feedback input.
DC
Undervoltage
• The voltage in the DC bus fell below the
undervoltage detection level (L2-05).
• The power supply failed or one input phase
has been lost.
• The power supply is too weak.
• Check the power supply.
• Make sure that the power supply can pro-
vide enough voltage.
Controller
Undervoltage
The control power supply does not have
enough voltage.
• Cycle power to the drive. Check if the fault
reoccurs.
• Replace the drive if the fault continues to
occur.
DC Charge
Circuit Fault
The charge circuit for the DC bus is broken.
• Cycle power to the drive and see if the
fault reoccurs.
• Replace the drive if the fault reoccurs.
Digital
Operator
Possible Cause
Corrective Action
Drive capacity and the value set to o2-04 do not
match.
Set to o2-04 to the correct value.
Parameters were set outside the allowable setting
range.
Set parameters to the proper values.
LED Display AL FLT
Possible Cause
Corrective Action
SE2
SE3
SE4
Uv1
(Uv)
Uv2
Uv3
oPE01
oPE02