Fuji Electric FRENIC-Lift series User Manual

6-2
6.2 If No Alarm Code Appears on the LED Monitor
6.2.1 Motor is running abnormally
[ 1 ] The motor does not rotate.
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 Turn ON a molded case circuit breaker, an earth leakage circuit breake
r
(with overcurrent protection) or a magnetic contactor.
Î Check for voltage drop, phase loss, poor connections, or poor contacts,
and fix them if necessary.
Î If only auxiliary control power is supplied, turn ON the main power.
(2) Neither forward run
command nor reverse run
command were inputted,
or both run commands
were inputted
simultaneously (external
signal operation).
Check the input status of the control circuit terminals [FWD] and [REV] with
Menu 4 "I/O Checking" using the keypad.
Î Input a run command.
Î Set either FWD or REV to off if both run commands are being inputted.
Î Correct the assignment of commands FWD and REV to function codes
E98 and E99.
Î Connect the external circuit wires to control circuit terminals [FWD] and
[REV] correctly.
Î Make sure that the sink/source slide switch on the printed circuit board is
properly configured.
(3) A run command with
higher priority than the one
attempted was active, and
the run command was
stopped.
Check the higher priority run command with Menu 2 "Data Checking" and
Menu 4 "I/O Checking" using the keypad.
Î Correct any incorrect function code data settings in H30 or cancel the
higher priority run command.
(4) The reference speed
(pre-ramp) was set below
the starting speed or stop
speed.
Check that a reference speed (pre-ramp) has been entered, with Menu 4
"I/O Checking" using the keypad.
Î Set the value of the reference speed (pre-ramp) to the same or highe
r
than that of F23 (Starting Speed) or F25 (Stop Speed).
Î Reconsider F23 (Starting Speed) or F25 (Stop Speed), and if necessary,
change them to lower values.
Î Inspect the speed command sources, speed controller, signal converters,
switches, or relay contacts. Replace any ones that are faulty.
Î Connect the external circuit wires correctly to terminals [12], [11], [C1],
and [V2] (analog speed command operation).
(5) A reference speed
command with higher
priority than the one
attempted was active.
Check the higher priority reference speed command setting with Menu 2
"Data Checking" and Menu 4 "I/O Checking" using the keypad, referring to
the block diagram of the reference speed command generator*.
*
Refer to the FRENIC-Lift Reference Manual (INR-SI47-1068-E), Chapter 1.
Î Correct any incorrect function code data settings (e.g. cancel the highe
r
priority reference speed command).
(6) The enable coast-to-stop
command was effective.
Check the data of function codes E01, E02, E03, E04, E05, E06, E07, E08,
E98 and E99 and the input signal status with Menu 4 "I/O Checking" using
the keypad.
Î Release the enable coast-to-stop command setting.
(7) EN terminal circuit opens.
Check the EN terminal state with I/O check menu using the keypad.
Î Close the EN terminal circuit.
(8) Broken wire, incorrect
connection or poor contact
with the motor.
Check the cabling and wiring (Measure the output current).
Î Repair the wires to the motor or replace them.

Fuji Electric FRENIC-Lift series Specifications

General

Brand	Fuji Electric
Model	FRENIC-Lift series
Category	Inverter
Language	English