Chapter 12 Description of Parameter SettingsC2000 Plus
12.2-13
b. If a fault occurs on the offset angle of magnetic pole (display: AUE), or the measured angle is still
0 degree or 360 degrees without any changes, then:
(a) Check the LED light on PG card if it’s red. Red light means the feedback signals are
wrong.
(b) Check the encoder and PG card are connected in the right order.
7. Re-power ON after power OFF.
8. Execute inertia estimation for PM
(1) Set Pr. 00-11 = 4, PM FOCPG control.
(2) Set the operation frequency command to 2/3 of the motor’s rated frequency.
(3) Set the acceleration / deceleration time (Pr. 01-12, Pr. 01-13) to 1/10 of the default time.
(adjust the acceleration / deceleration time according to the load inertia. The smaller the
load inertia, the shorter the acceleration / deceleration time is set).
(4) Check if the load and the motor is connected.
(5) Set Pr. 11-00 bit1 = 1, inertia estimate (only in FOCPG mode).
(6) Press RUN key to proceed the inertia
Quickly run the motor in forward and reverse direction repeatedly, and observe the inertia
estimated value of Pr. 11-01 for the keypad.
a. If the system inertial estimated value of Pr. 11-01 does not change ( = default 256), it
means the inertia estimation is wrong. Reduce the frequency command and estimate
the inertia again.
b. If the system inertia estimated value of Pr. 11-01 is still a lot different from the estimated
value of FWD/REV operation, continue the estimation in forward / reverse operating
direction to restraint the estimated inertia to small difference.
(7) Press STOP key to obtain the estimated inertia value:
a. Press ENTER to confirm the input value at the displayed page of the last estimated
inertia value of Pr. 11-01.
b. Set Pr.11-01 bit1 = 0, return the control mode to speed mode.
c. Set the acceleration / deceleration time (Pr.01-12, 01-13) back to the default value.
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