Fuji Electric FRN355VG1S-4J [1005/1046] The motor rotates but the speed does not change

Fuji Electric FRN7.5VG1S-4J [1005/1046] The motor rotates but the speed does not change
13.5 If Neither an Alarm Code Nor "Light Alarm" Indication (
l-al
) Appears on the LED Monitor
13-29
Chap. 13 TROUBLESHOOTING
Possible Causes What to Check and Suggested Measures
(15) No reference speed setting
(keypad operation).
Check the reference speed setting made on the keypad.
Î Modify the reference speed setting by pressing [] key.
(16) The inverter could not
accept any run commands
from the keypad since it was
in Programming mode.
Check which operation mode the inverter is in, using the keypad.
Î Shift the operation mode to Running mode and enter a run command.
Under vector control with speed
sensor
(17) Incorrect setting of the
number of poles of the
motor
Check whether the setting of function code P05, A07 or A107 (No. of poles)
matches the number of poles of the actual motor.
Î Set the data of P05, A07 or A107 to the correct number of poles.
Under vector control with speed
sensor
(18) Wrong wiring between the
motor and pulse generator
(PG).
Check the motor wiring (phase sequence) and the polarity of the PG.
Î Correct the wiring.
Under vector control
with/without speed sensor
(19) Incorrect setting of the
torque limiter level.
Check whether the torque limiter level (Function code F44, F45) is set to
zero (0).
Î Modify the data of F44 or F45 to the appropriate value.
Under vector control
with/without speed sensor
(20) Incorrect setting of the
torque command.
Check whether the torque command of terminal [Ai1]/[Ai2] is zero (0)
under torque control mode.
Î Modify the torque command to the appropriate value.
Under vector control with speed
sensor
(21) Mismatch between the PG's
pulse resolution and the
function code setting.
Check whether the setting of function code P28, A30 or A130 matches the
pulse resolution of the actual PG..
Î Modify the data of P28, A30 or A130 to the appropriate value.
Check whether the voltage setting of terminal [PGP] (SW6) matches the
voltage specification of the actual PG.
Î Set SW6 to the appropriate position.
(22) The magnetic pole position
of the permanent magnet
synchronous motor
(PMSM) is out of place.
Check the magnetic pole position.
Î Adjust the magnetic pole position (o10, A60, A160).
(Refer to Chapter 3, Section 3.5.3.3 "Vector control for PMSM with
speed sensor and magnetic pole position sensor," Adjusting the
magnetic pole position.")
[ 2 ] The motor rotates, but the speed does not change.
Possible Causes What to Check and Suggested Measures
(1) The setting of the maximum
speed was too low.
Check the data of function code F03, A06 or A106 (Maximum speed).
Î Modify the data of F03, A06 or A106 to the appropriate value.
(2) The setting of the speed
limiter was too low.
Check the setting of the speed limiter (F76 to F78).
Î Modify the data of F76 to F78 to the appropriate value.
(3) The reference speed (analog
setting) did not change.
Check whether the reference speed has been entered correctly, using Menu
#4 "I/O CHECK" on the keypad.
Î Increase the reference speed.
Î Inspect the external speed command potentiometers, signal converters,
switches, and relay contacts. Replace any ones that are faulty.
Î Connect the external circuit wires to terminals [13], [12], [11], [Ai1] and
[Ai2] correctly.

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