Fuji Electric FVR-E11S-7EN User Manual

7-5
7-2 When Motor rotates Incorrectly
(1) The motor does not rotate.
The motor does not
rotate.
Remove the cause of
the alarm, reset the
alarm then start
operation.
YES
Turn them on.
Check if the charge
lamp (CRG) is lit and
that the keypad panel
displays something.
NO
Check if the alarm
mode screen is
displayed.
Check if the circuit
breaker and
electromagnetic
contactor of the power
supply are turned on.
NO
YES
YES
NO
Check if the voltage
at the power supply
terminal (R/L1, S/L2,
T/L3) is correct.
Check for voltage
drop, phase lack,
connection errors,
poor contact and
other problems and
take necessary
actions.
NO
YES
Check if the operation
commands are input
through the keypad
panel or through the
control terminals.
Check if a jumper or
DC reactor is
connected across
terminals P1 and P (+).
NO
Connect.
Continue operation if
no error is found.
Keypad
panel
Control
terminal
YES
Check if the motor
rotates when the
RUN key is pressed.
Failure of the inverter
is probable. Contact
Fuji Electric.
YES
Check if the forward
or reverse operation
command is input.
Check if the external
circuit wiring across
control terminals FWD and
REV and the CM terminal
is connected correctly.
NO
NO
YES
The switch or relay is
faulty; replace the
faulty parts.
Press the up or down
key to set the
frequency.
Check if the
frequency is set.
Check if control terminals
13, 12, 11 and C1 or, with
multistep frequency
selection, external circuit
wiring across X1 to X5 and
the CM terminal is
connected correctly.
Correct the wiring.
YES YES
NO
NO
YES
Check if the motor
rotates when the
up or down key is
pressed.
Check if the upper
frequency limiter and
the set frequency are
smaller than the
starting frequency.
The frequency setting
unit, signal converter,
switch, relay contact or
other unit is faulty.
Replace the faulty
parts.
YES
Check that the
voltage is present at
the inverter output
terminals (U, V, W).
Check if the wiring to
the motor is correct.
Set the correct
frequency.
Failure of motor.
Increase the torque
boost amount.
Check if the load
is excessive.
Check if the torque
boost amount is
correctly set.
YES
YES
NO
NO
NO
NO
YES
NO
NO
Failure of the inverter
is probable. Contact
Fuji Electric.
YES
Correct the wiring.
NO
NO
YES
Note: For the
operation command
frequency setting
and other data,
select each function
and monitor at the
keypad panel.
YES
YES
The load is excessively large and the motor is
locked. Reduce the load. For motors with a
mechanical brake, check that the brake is
released.
NO
The motor does not start when a coast-to-stop command or DC braking command is being input.
P24
P24

Fuji Electric FVR-E11S-7EN Specifications

General

Brand	Fuji Electric
Model	FVR-E11S-7EN
Category	Inverter
Language	English