Fuji Electric FRN355VG1S-4J [1001/1046] Pbf charger circuit fault

Fuji Electric FRN355VG1S-4J [1001/1046] Pbf charger circuit fault
13.3 If an alarm code appears on the LED monitor
13-25
Chap. 13 TROUBLESHOOTING
Possible Causes What to Check and Suggested Measures
(9) PG waveform abnormal. Check whether the inverter internal control circuit (PG input circuit) is
faulty, using the self-diagnosis function of the PG detection circuit (H74).
Î If the result is "Normal," replace the PG; if it is "Abnormal," contact
your Fuji Electric representative.
Check the PG waveform using an oscilloscope.
Î Replace the PG.
[ 34 ]
pbf
Charger circuit fault
Problem The magnetic contactor for short-circuiting the charging resistor failed to work. (For 200 V class
series of 37 kW or above and those of 75 kW or above)
Possible Causes What to Check and Suggested Measures
(1) No control power was
supplied to the magnetic
contactor (MC) intended for
short-circuiting the charging
resistor.
Check that, in normal connection of the main circuit (not a connection via
the DC link bus), the connector (CN R) on the power printed circuit board
(power PCB) is not inserted to NC .
Î Insert the connector (CN R) to FAN .
For details, refer to Chapter 3, Section 3.3.3.6 "Switching connectors,
Fan power supply switching connectors."
(2) Breaks in wiring to the main
power input terminals.
Measure the input voltage.
Î Repair or replace the main circuit power input wires or input devices
(MCCB, MC, etc.).

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