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TROUBLE SHOOTING
7-1
SECTION 7
TROUBLE SHOOTING
Before proceeding with Troubleshooting
WARNING!
If any of the protective functions have been activated, first remove the cause.
Then, after checking that the all run commands are set to off, reset the alarm. Note
that if the alarm is reset while any run commands are set to on, the inverter any
supply the power to the motor which may cause the motor to rotate.
Injury may occur.
-
Even though the inverter has interrupted power to the motor, if the voltage is
applied to the main circuit power input terminals L1/R, L2/S and L2/T (L1/L
and L2/N for single – phase voltage input), voltage may be output to inverter
output terminals U, V, and W.
-
Some electric charge may remain in the DC bus capacitor even after the
power is turned off. Therefore, it may take some time until the DC link circuit
voltage reaches a safe level. Before touching the circuit, wait for at least five
minutes after the power has been turned off and check that the DC voltage
between main circuit terminals P (+) and N(-) is less than +25 VDC using a
multi – meter.
Electric shock may occur.
Follow the procedure below to solve problems.
1.
First, check that the inverter is correctly wired, referring “Wiring for Main Circuit Terminals
and Grounding Terminals”
2.
Check whether an alarm code is displayed on the LED monitor. If no alarm code appears on
the LED monitor
If any problems persist after the above recovery procedure, contact the shop where
you bought the inverter or your local Fuji branch office.
Содержание MWHE20
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