Chapter 12 Description of Parameter SettingsCP2000
12.2-00-5
b. If an ocA error occurs when pressing RUN to start the motor, decrease the current
proportion for Pr.10-42 (Initial angle detection pulse value). An excessive pulse current
may cause ocA error easily.
A2. Operates the motor in 1/2 of the rated rotor speed, adjust the no-load operating current
If the no-load operating current exceeds 20% of the rated current, increase Pr.07-26
(Torque compensation gain) and observe the no-load operating current.
A3. Accelerate to rated frequency and observe if the motor operates stably.
a. If the motor output rotor speed presents periodic low-frequency wave, increase Pr.10-34
(PM sensorless speed estimator low-pass filter gain), or increase Pr.10-32 (PM FOC
sensorless speed estimator bandwidth).
b. If the output frequency reflects high-frequency vibration, decrease Pr.10-34 or decrease
Pr.10-32.
A4. Accelerate the motor to the maximum rotor speed, and observe if it operates stably.
If the motor stalls when accelerating to the maximum rotor speed, then increase Pr.10-34
PM Sensorless Speed Estimator Low-pass Filter Gain, or increase Pr.00-17 Carrier
Frequency (you must set the carrier frequency larger than 10 times of the maximum output
frequency)
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