7 Troubleshooting
YASKAWA ELECTRIC
TOEP C710606 27C - AC Drive J1000 - Quick Start Guide
EN 29
Operator Programing Errors
An Operator Programming Error (oPE) occurs when an inapplicable parameter is set or an
individual parameter setting is inappropriate. This monitor will display the parameter that is
causing the oPE error.
DC
Overvoltage
DC bus voltage rose too high.
The deceleration time is too short.
Stall prevention is disabled.
Braking chopper / resistor broken.
Unstable motor control in OLV.
Too high input voltage.
• Increase the deceleration time.
• Enable stall prevention by parameter
L3-04.
• Make sure the braking resistor and
braking chopper are working correctly.
• Check motor parameter settings and
adjust torque and slip compensation, AFR
and hunting prevention as needed.
• Make sure that the power supply voltage
meets the drives specifications.
Input Phase
Loss
Input voltage drop or phase imbalance.
One of the input phase is lost.
Loose wires at the drive input.
• Check the motor wiring.
• Make sure all terminal screws in the drive
and motor are properly tightened.
• Check the motor and drive capacity.
Braking
Transistor
Fault
The internal braking transistor is broken.
• Cycle the power supply.
• Replace the drive if the fault reoccurs.
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 is
strong enough.
Controller
Undervoltage
The drives controller power supply voltage
is too low.
• 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. Check if the
fault reoccurs.
• Replace the drive if the fault reoccurs.
LED Operator
Display
Cause Corrective Action
oPE01
Drive capacity and value set to o2-04 do not
match.
Correct the value set to o2-04.
oPE02
Parameters were set outside the allowable setting
range.
Set parameters to the proper values.
LED Display AL FLT Cause Corrective Action
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