Delta CT2000 Series User Manual page 366

 Injection Magnitude
Settings
 The parameter can be got while motor parameter executes auto-tuning. The
parameter will influence the accuracy of angle detection.
 When the ratio of salient pole (Lq/Ld) is lower, increase Pr10-52 to make angle
detection be accurate.
4. Set up speed control mode: Pr00-10=0, Pr00-11=2 SVC.
5. It is suggested that cutting off the power after finishing tuning, and then re-power on.
6. The ration of PMSVC control mode is 1:20.
7. When PMSVC control mode is under 1/20 rated speed, load bearing capacity=100% motor
rated torque.
8. PMSVC control mode is not applicable for zero speed control.
9. Start-up with load and forward/reverse load bearing capacity of PMSVC control mode=100%
rated torque of motor.
10. Set up the speed estimators related parameters
I/F Mode Current Command / Low-speed Current Command under PMSVC

Control
Settings
 The parameter is the current command of the drive in low-speed area (low-speed area:
frequency command < Pr10-39).
 When it is stalling on heavy duty start-up or forward/reverse with load, adjust the parameter
(to increase it). If inrush current too higher to cause oc stall, then decrease it.
PM FOC Sensorless Speed Estimator Bandwidth

Settings
 The parameter is speed estimator bandwidth. Adjust the parameter will influence the stability
and the accuracy of speed for motor.
 If there is low frequency vibrates (the waveform is similar to sine wave) during the process,
then increase the bandwidth. If there is high frequency vibrates (the waveform vibrates
extremely and is like spur), then decrease the bandwidth.
PM Sensorless Observer Low-pass Filter Gain

Settings
 Adjust the parameter will influence the speed estimator's speed of response.
 If there is low frequency vibrates (the waveform is similar to sine wave) during the process,
then increase the gain. If there is high frequency vibrates (the waveform vibrates extremely
and is like spur), then decrease the gain.
Chapter 12 Description of Parameter SettingsCT2000 Series
0.0~200.0V
0~150% of motor's rated current
0.00~600.00Hz
0.00~655.35
12.2-00-4
Factory Setting:15/30V
Factory Setting:40
Factory Setting:5.00
Factory Setting:1.00