Delta MS300 Series User Manual page 472

 Adjustment for operation with heavy load
Load operating test
9.
B1. Low-frequency loading performance is below 1/10 of rated frequency:
If the low-frequency loading performance is insufficient, or the rotor speed is not
a.
smooth, increase Pr.10-31 (current command of I/F mode).
If the low-frequency current is large, decrease Pr.10-31 (current command of I/F
b.
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: the motor operates stably at constant speed
If the motor output rotor speed presents periodic low-frequency wave, increase Pr.10-
a.
34 (PM sensorless speed estimator low-pass filter gain), or increase Pr.10-32 (PM
FOC sensorless speed estimator bandwidth).
If the output frequency reflects high frequency vibration, decrease Pr.10-34 or
b.
decrease Pr.10-32.
 PM SVC related parameters
Refer to Section 12-1 Description of Parameter Settings for more details.
Parameter
Pr.07-24 Torque command filter time
Pr.07-26 Torque compensation gain
Pr.07-38 PMSVC voltage feedback forward gain
Pr.10-31 I/F mode, current command
Pr.10-32 PM FOC sensorless speed estimator bandwidth
PM sensorless speed estimator low-pass filter
Pr.10-34
gain
Frequency point to switch from I/F mode to PM
Pr.10-39
sensorless mode
Pr.10-42 Initial angle detection pulse value
Pr.10-51 Injection frequency
Pr.10-52 Injection magnitude
PM initial rotor position detection method
0: Disable
Pr.10-53 1: Force attracting the rotor to zero degrees
2: High frequency injection
3: Pulse injection
Chapter 12 Description of Parameter SettingsMS300
Description
Initial Angle Estimating Parameters
463
Unit Default Setting Range
sec. 0.050 0.001–10.000
NA 0 0–5000
NA 1.0 0.00–2.00
% 40 0–150
Hz 5.00 0.00–600.00
NA 1.00 0.00–655.35
Hz 20.00 0.00–599.00
NA 1.0 0.0–3.0
Hz 500 0–1200
15.0／
V 0.0–200.0
30.0
NA 0 0–3