Fuji Electric FRENIC-Ace series, Руководство пользователя

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6.3 If an Alarm Code Appears on the LED Monitor
6-12
[ 16 ]
ere
Speed inconsistency / Excessive speed deviation
Phenomena An excessive deviation appears between the speed command and the detected speed.
Possible Causes Check and Measures
(1) Incorrect setting of function
code data.
Check the motor parameter “Number of poles” (P01*).

Specify the P01* data in accordance with the motor to be used.
(2) Overload. Measure the inverter output current.

Reduce the load.
Check whether any mechanical brake is applied.

Release the mechanical brake.
(3) The motor speed does not
increase due to the current
limiter operation.
Check the data of function code F44 (Current limiter (Level)).

Change the F44 data correctly. Or, set the F43 data to “0” (Disable)
if the current limiter operation is not needed.
Check the data of the function codes (F04*, F05*, P01*-P12*) to see if
V/f is set correctly.

Match the V/f pattern setting with the motor ratings.

Change the function code data in accordance with the motor
parameters.
(4) Function code settings do not
match the motor characteristics.
Confirm that P01*, P02*, P03*, P06*, P07*, P08*, P09*, P10*, P12*
match the motor constants.

Perform auto-tuning of the inverter, using the function code P04*.
(5) Wiring to the motor is incorrect. Check the wiring to the motor.

Connect the inverter output terminals U, V, and W to the motor input
terminals U, V, and W, respectively.
(6) The motor speed does not
increase due to the torque
limiter operation.
Check the data of F40 (Torque limiter (Level)).

Change the F40 data correctly. Or, set the F40 data to “999”
(Disable) if the torque limiter operation is not needed.
(7) The wire between the pulse
generator (PG) and the option
card is broken or incorrect.
Check whether the pulse generator (PG) is correctly connected to the
option card or any wire is broken.

Check whether the PG is connected correctly. Or, tighten the related
terminal screws.

Check whether any contact part bites the wire sheath.

Replace the wire.