Fuji Electric FRN355VG1S-4J [1013/1046] _ _ _ _ under bar appears

Fuji Electric FRN22VG1S-2J [1013/1046] _ _ _ _ under bar appears
13.5 If Neither an Alarm Code Nor "Light Alarm" Indication (
l-al
) Appears on the LED Monitor
13-37
Chap. 13 TROUBLESHOOTING
[ 15 ] _ _ _ _ (under bar) appears.
Problem Although you pressed the or
key or entered a run forward command FWD or a run reverse
command REV, the motor did not start and an under bar ( _ _ _ _ ) appeared on the LED monitor.
Possible Causes What to Check and Suggested Measures
(1) The DC link bus voltage
was low.
Select Menu #5 "MAINTENANCE" in Programming mode on the keypad
and check the DC link bus voltage which should be 200 VDC or below for
three-phase 200 V class series, and 400 VDC or below for three-phase 400
V class series.
Î Connect the inverter to a power supply that meets its input
specifications.
(2) The main power is not ON,
while the auxiliary input
power to the control circuit
is supplied.
Check whether the main power is turned ON.
Î Turn the main power ON.
Check whether the short bar is removed from terminals P1 and P(+) or
check the short bar for poor contact.
Î Mount a short bar or DC reactor (DCR) between terminals P1 and P(+).
Or tighten the fixing screw further.
(3) Although power is supplied
not via the commercial
power line but via the DC
link bus, the main power
down detection is enabled
(H76 = 1).
Check the connection to the main power and check if the H76 data is set to
"1" (factory default).
Î Correct the data of H76.
(4) 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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