Delta VFD2A8MS21ANSAA User Manual

Chapter 12 Description of Parameter SettingsMS300
463
 Adjustment for operation with heavy load
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: 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.
 PM SVC related parameters
Refer to Section 12-1 Description of Parameter Settings for more details.
Parameter
Description
Unit
Default
Setting Range
Pr.07-24
Torque command filter time
sec.
0.050
0.001–10.000
Pr.07-26
Torque compensation gain
NA
0
0–5000
Pr.07-38
PMSVC voltage feedback forward gain
NA
1.0
0.00–2.00
Pr.10-31
I/F mode, current command
%
40
0–150
Pr.10-32
PM FOC sensorless speed estimator bandwidth
Hz
5.00
0.00–600.00
Pr.10-34
PM sensorless speed estimator low-pass filter
gain
NA
1.00
0.00–655.35
Pr.10-39
Frequency point to switch from I/F mode to PM
sensorless mode
Hz
20.00
0.00–599.00
Initial Angle Estimating Parameters
Pr.10-42
Initial angle detection pulse value
NA
1.0
0.0–3.0
Pr.10-51
Injection frequency
Hz
500
0–1200
Pr.10-52
Injection magnitude
V
15.0／
30.0
0.0–200.0
Pr.10-53
PM initial rotor position detection method
0: Disable
1: Force attracting the rotor to zero degrees
2: High frequency injection
3: Pulse injection
NA
0
0–3

Delta VFD2A8MS21ANSAA Specifications

General

Brand	Delta
Model	VFD2A8MS21ANSAA
Category	DC Drives
Language	English