Chapter 5 Breakdown Maintenance; Troubleshooting; When The Operation Panel Does Not Display The Energization - Mitsubishi Electric FATEC FR-A800 Manual

5
BREAKDOWN MAINTENANCE

CHAPTER 5 BREAKDOWN MAINTENANCE

Troubles can be caused by failures or accidents even though preventive maintenance is performed. If
the inverter becomes faulty by any unexpected reason and the production system stops, breakdown
maintenance is required.
5.1

Troubleshooting

The troubleshooting flowcharts for each phenomenon are shown below. Perform an appropriate
troubleshooting depending on the trouble. "Pr." in the troubleshooting flowcharts indicates the
parameter. For example, "Pr.0" indicates the parameter No. 0. A four-digit value starting with an
alphabet indicates the functional group parameter number.
5.1.1

When the operation panel does not display the energization

When the operation panel does not become powered
Is the wiring correct?
Is the power supplied?
Is the power supply
voltage correct?
Is the operation panel
installed correctly?
The inverter or the operation
panel (PU) is faulty.
Replace it with a substitute or
return it to the factory to repair.
5.1 Troubleshooting
52
Powered display
1-A
NO
Correct the wiring.
YES
Main power supply (R, S, T)
Motor (U, V, W)
Control power supply (R1, S1)
P-P1
NO
YES
NO
YES
・ 100V, 200V, 400V?
NO
YES
Securely connect it to the inverter.
In case of the cable connection,
check the connection of cables
and connectors.
Supply the power.
Match the power supply voltage
to the inverter rated voltage.
R, S, T ： AC power input terminals
U, V, W ： Inverter output terminals
R1, S1 ： Power terminals
for control circuit
P-P1: DC reactor connection terminal