Delta C2000 Series User Manual page 620

 Heavy Load Operation Adjustment
9. Load operating test
B1. Low-frequency loading performance is below 1/10 of rated frequency:
a. If the low-frequency loading performance is insufficient, or the rotor speed is not smooth,
increase Pr. 10-31 (Current command of I/F mode).
b. If the low-frequency current is large, decrease Pr. 10-31 (Current command of I/F mode).
B2. Test the with-load accelerating performance:
When the motor operates in 1/10 of rotor speed and above, if the speed cannot follow the
acceleration time during accelerating, or the current stalls, increase Pr. 07-38 (PMSVC
voltage feedback forward gain).
10. Stability test at constant speed operation: if the motor operates stably at constant speed
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.
12-2-3-2 PMSVC Related Parameters
Refer to Section 12-1 Description of Parameter Settings for more details.
Parameter
Pr.07-24
Pr.07-26
Pr.07-38
Pr.10-31
Pr.10-32
Pr.10-34
Pr.10-39
Pr.10-40
Pr.10-42
Pr.10-51
Pr.10-52
Pr.10-53
Description
Torque command filter time
Torque compensation gain
PMSVC voltage feedback forward gain
I/F mode, current command
PM FOC sensorless speed estimator bandwidth
PM sensorless speed estimator low-pass filter
gain
Frequency point to switch from I/F mode to PM
sensorless mode
Frequency point to switch from PM sensorless
mode to V/F mode
Initial Angle Estimating Parameters
Initial angle detection pulse value
Injection frequency
Injection magnitude
PM initial rotor position detection method
0: Disable
1: Internal 1/4 rated current attracting the rotor to
zero degrees
2: High frequency injection
3: Pulse injection
12.2-00-25
Chapter 12 Description of Parameter SettingsC2000
Unit
sec.
N/A
N/A
%
Hz
N/A
Hz
Hz
N/A
Hz
V
N/A
Setting
Default
Range
0.5 0.001–10
0 0–5000
1.0 0.5–2.0
40 0–150
5.00 0.00–600
1.00 0.00–655.35
20.00 0.00–599.00
20.00 0.00–599.00
1.0 0.0 –3.0
500 0–1200
15.0 /
0.0–200.0
30.0
0 0–3