Fuji Electric FRENIC-Multi User Manual

6-8
[ 7 ] Even if the power recovers after a momentary power failure, the motor does not restart.
Possible Causes What to Check and Suggested Measures
(1) The data of function
code F14 is either "0" or
"1."
Check if an undervoltage trip occurs.
Î Change the data of function code F14 (Restart mode afte
r
momentary power failure (Mode selection)) to "4" or "5."
Check the input signal with Menu #4 "I/O Checking" using the
keypad.
Î Check the power recovery sequence with an external circuit. I
f
necessary, consider the use of a relay that can keep the run
command on.
(2) The run command
stayed off even after
power has been
restored.
While in 3-wire operation, the power source to the inverter's control
PCB went down because of a long momentary power failure; or, the
(HOLD) signal was turned OFF once.
Î Change the design or the setting so that a run command can be
issued again within 2 seconds after power has been restored.
[ 8 ] The inverter does not run as expected
Possible Causes What to Check and Suggested Measures
Check that all function codes are correctly configured.
Î Correct the configuration of the function codes.
(1) Wrong configuration of
function codes
Make a note of function code data currently configured and initialize
all function code data (H03).
Î After initialization, reconfigure the necessary function codes one
by one, checking the running status of the inverter.
6.2.2 Problems with inverter settings
[ 1 ] Nothing appears on the LED monitor.
Possible Causes What to Check and Suggested Measures
(1) No power supplied to
the inverter.
Check the input voltage, output voltage and interphase voltage
unbalance.
Î Connect a molded case circuit breaker (MCCB), a residual-
current-operated protective device (RCD)/a ground fault circuit
interrupter (GFCI)(with overcurrent protection) or a magnetic
contactor (MC).
Î Check for voltage drop, phase loss, poor connections, or poo
r
contacts, and fix them if necessary.
(2) The power for the
control PCB did not
reach a high enough
level.
Check if the jumper bar has been removed between terminals P1
and P(+) or if there is poor contact between the jumper bar and the
terminals.
Î Connect the jumper bar or DC reactor between terminals P1 and
P(+) or retighten the screws.

Fuji Electric FRENIC-Multi Specifications

General

Brand	Fuji Electric
Model	FRENIC-Multi
Category	Inverter
Language	English