YASKAWA D1000 Series Quick Start Manual page 46

9 Troubleshooting
Digital Operator AL FL
Converter Overload
oL2
External Digital
Operator Connection
Fault
oPr
DC Bus Overvoltage
ov
Power Supply
Undervoltage
Pre-Alarm
PAUv
Input Power Supply
Fault
PF2
Input Phase Loss
Detection
PF3
Input Short-circuit/
Main Transistor
Failure
SC
Phase Order Fault
SrC
46
Cause
Load is too heavy.
Converter capacity is too small.
The converter does not operate.
External operator is not properly
connected to the converter.
The regenerative load is too large.
Input power voltage is too high.
Converter fails to operate properly due to
noise interference.
The wiring of the power supply voltage
detection circuits ( ,
r1/ 11 1/ 21
) and the wiring of the main circuit
t1/ 31
terminals (R/L1, S/L2, and T/L3) is not
correct.
Electrical noise interference causes the
converter to operate incorrectly.
There is a regenerative load while the
converter is stopped.
The power supply voltage is low.
A phase loss occurred in the input power
supply.
Voltage detection failed.
The fluctuation in the voltage of the input
power supply is too large.
A phase loss occurred in the input power
supply.
The capacity of the power supply is too
small.
The wiring is too long.
The phase imbalance is too large.
The fluctuation in the voltage of the input
power supply is too large.
A phase loss occurred in the input power
supply.
The capacity of the power supply is too
small.
The wiring is too long.
The phase imbalance is too large.
IGBT fault
IGBT short circuit detection circuit fault.
The power supply phase order changed
during operation.
A momentary power loss occurred.
An input power supply wiring terminal is
loose.
The fluctuation in the voltage of the input
power supply is too large.
YASKAWA ELECTRIC TOEP C710656 06A YASKAWA Power Regenerative Converter - D1000 Quick Start Guide
Reduce the load.
Replace the converter with a larger model.
Start converter operation first, and then start converter operation.
Check the connection between the operator and the converter.
• Replace the cable if damaged.
• Turn off the input power and disconnect the operator. Reconnect the
operator and reapply converter input power.
Reduce the regenerative load.
Check the voltage.
Lower input power voltage within the limits listed in the
specifications.
• Review the list of possible solutions provided for controlling noise.
• Review the section on handling noise interference and check the
control circuit lines, main circuit lines, and ground wiring.
, and
Correct the wiring.
• Review possible solutions for handling noise interference.
• Review section on handling noise interference and check control
circuit lines, main circuit lines and ground wiring.
• If the magnetic contactor is identified as a source of noise, install a
surge protector to the MC coil.
Set number of fault restarts (L5-01) to a value other than 0.
Operate the converter.
Increase the power supply voltage.
Check the input power supply for phase loss or an imbalance in the
interphase voltages.
Investigate and correct the cause and then reset the fault.
Check
r1/ 11, 1/ 21, and t1/ 31
Investigate and correct the cause and then reset the fault.
Investigate and correct the cause and then reset the fault.
• Check the wiring to the drive.
• Turn the power supply off and then on again to check operation.
If the problem continues, contact your Yaskawa representative or
nearest Yaskawa sales office.
Investigate and correct the cause and then reset the fault.
Corrective Action
to see if they are wired correctly.