Fuji Electric FRN355VG1S-4J [1009/1046] The motor does not restart even after the power recovers from a momentary power failure

Fuji Electric FRN132VG1S-4J [1009/1046] The motor does not restart even after the power recovers from a momentary power failure
13.5 If Neither an Alarm Code Nor "Light Alarm" Indication (
l-al
) Appears on the LED Monitor
13-33
Chap. 13 TROUBLESHOOTING
Possible Causes What to Check and Suggested Measures
(3) Overload. Measure the output current.
Î Reduce the load.
Under V/f control
(4) Torque generated by the
motor was insufficient.
Check that increasing the torque boost (P35, A55, A155) starts the motor.
Î Increase the value of the torque boost (P35, A55, A155).
(5) An external potentiometer is
used for frequency setting.
Check that there is no noise on the control signal wires connecting to
external sources.
Î Isolate the control signal wires from the main circuit wires as far as
possible.
Î Use shielded or twisted wires for control signals.
Check whether the external speed command potentiometer is
malfunctioning due to noise from the inverter.
Î Connect a capacitor to the output terminal of the potentiometer or set a
ferrite core on the signal wire. (Refer to Chapter 3, Section 3.3.3.8.)
(6) Motor torque generated is
limited by the torque limiter.
Check whether data of torque limiter related function codes (F40 through
F45) is correctly configured and the TL2/TL1 terminal command ("Select
torque limiter level 2/1") is correct.
Î Correct the data of F40 through F45 or reset them to the factory defaults.
Check whether the speed command potentiometer is malfunctioning due to
noise from the inverter.
Î Set the TL2/TL1 correctly.
Î Increase the acceleration/deceleration time (F07, F08, C35, C36, C46,
C47, C56, C57, C66, C67).
(7) The specified acceleration
or deceleration time was
incorrect.
Check the terminal commands RT1 and RT2 for acceleration/deceleration
times.
Î Correct the RT1 and RT2 settings.
[ 7 ] The motor does not restart even after the power recovers from a
momentary power failure.
Possible Causes What to Check and Suggested Measures
(1) The data of function code
F14 is either "0," "1," or "2."
Check if an undervoltage trip (
lu
) occurs.
Î Change the data of F14 (Restart mode after momentary power failure,
Mode selection) to "3," "4," or "5."
Check the input signal with Menu #4 "I/O CHECK" using the keypad.
Î Check the power recovery sequence with an external circuit. If
necessary, consider the use of a relay that can keep the run command
ON.
(2) The run command remains
OFF even after the power
has been restored.
In 3-wire operation, the power to the control printed circuit board (control
PCB) has been shut down once because of a long momentary power failure
time, or the HOLD signal ("Enable 3-wire operation") has been turned OFF
once.
Î Change the design or the setting so that a run command can be issued
again within 2 seconds after the power has been restored.

Содержание

Скачать