Chapter 12 Description of Parameter SettingsC2000 Plus
12.2-38
Load operation adjustment
1. Load operating test
B1. Low-frequency loading performance, when the switch frequency is below Pr.10-39:
a. When the low-frequency cannot start the motor with load, or the rotor speed is not smooth,
increase Pr.11-03 (ASR1 low-speed bandwidth) or Pr.11-01 (per-unit of system inertia); if
the above adjustment cannot meet the requirement, then increase Pr.10-32 (PM FOC
sensorless speed estimator bandwidth).
b. When frequency outputs, low-frequency operating current is large or an oc error occurs,
decrease Pr.11-03 and Pr.11-01; or decrease Pr.10-32.
B2. Acceleration performance test under heavy-load status, accelerate the motor to rated rotor
speed according to the acceleration time:
a. If the motor cannot follow the acceleration time, and the response is too slow, increase
Pr.11-04 (ASR2 high-speed bandwidth) and Pr.11-03 (ASR1 low-speed bandwidth).
b. If an excessive acceleration causes vibration or ocA error, decrease Pr.11-04 and Pr.11-
03.
2. Stability test at constant speed operation: if the motor operates stably at constant speed
b. 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).
c. If the output frequency reflects high-frequency vibration, decrease Pr. 10-34 or decrease
Pr. 10-32.
IPM Sensorless adjustment parameters
Refer to Section 12-1 Description of Parameter Settings for more details.
Parameter Description Unit Default Setting Range
Pr.10-32
PM FOC sensorless speed estimator
bandwidth
Hz 5.00 0.00–600.00
Pr.10-34 PM sensorless speed estimator bandwidth N/A 1.00 0.00–655.35
Pr.10-35 AMR (Kp) gain N/A 1.00 0.00–3.00
Pr.10-36 AMR (Ki) gain N/A 0.20 0.00–3.00
Pr.10-39
Frequency point to switch from I/F mode to
PM sensorless mode
Hz 20.00 0.00–599.00
Pr.10-40
Frequency point to switch from PM
sensorless mode to V/F mode
Hz 20.00 0.00–599.00
Pr.10-42 Initial angle detection pulse value N/A 1.0 0.0–3.0
Initial Angle Estimating Parameters
Pr.10-51 Injection frequency (for IPM) Hz 500 0–1200
Pr.10-52 Injection magnitude (for IPM) V
15.0 /
30.0
0.0–200.0
Pr.10-53 PM initial rotor position detection method N/A 0 0–3
Motor Performance Control Parameters
Pr.11-00 System control bit 0 0–8
Pr.11-02 ASR1 / ASR2 switch frequency Hz 7 5.00–599.00
Pr.11-03 ASR1 low-speed bandwidth Hz 10
1–[(Pr.00-17) ÷ 40] Hz
Pr.11-04 ASR2 high-speed bandwidth Hz 10
1–[(Pr.00-17) ÷ 40] Hz
Pr.11-05 Zero-speed bandwidth Hz 10
1–[(Pr.00-17) ÷ 40] Hz
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