Delta VFD300C43S-HS User Manual page 500

Chapter 12 Description of Parameter SettingsC2000-HS
II. IPM Sensorless FOC Mode – No-load / Light-load Adjustment
Increase Pr.10-52 injection magnitude
Increase Pr.10-42 initial angle detection
pulse value
(Note: too large pulse may cause oc error)
Wrong started direction
causes ocA
Increase ASR2 bandwidth
Pr.11-04
Increase speed estimation
bandwidth Pr.10-32
Cyclicity low-frequency wave
of the motor frequency
Increase speed estimation
bandwidth Pr.10-32
Increase low-pass filter gain
Pr.10-34
Vibration or motor stall at max.
(a) Set speed regulator ASR
Pr.11-00=1 ASR auto-tuning
(b) No-load started to ½ rated
rotor speed
Started with correct
NO
9. No-load/Light-load
Acceleration Test
NO
A1. Rated frequency
YES
A2. Reach max.
NO
output frequency?
rotor speed
YES
10. Running Test
12.2-00-30
8. No-load
Running
direction?
YES
YES
runs stable?
vibration of output frequency
with Load
Increase Pr.10-52
Angle detection of high
frequency injection
When the motor rated frequency
approaches
Decrease ASR2 bandwidth
Pr.11-04
Decrease speed estimation
bandwidth Pr.10-32
Strong high-frequency