Delta VFD2A8MS21ANSAA User Manual

Chapter 12 Description of Parameter SettingsMS300
462
(3) PM SVC adjustment flowchart for operation starts with load
Low-frequency
carrier performance
is normal?
Increase PM current level of
open-loop low-speed area
(Pr.10-31)
Low-frequency
(1/10 rotor speed)
unsufficient loaded capability
Decrease PM current level
of the open-loop low-speed
area
(Pr.10-31)
Low-frequency
(1/10 rotor speed)
over current
Acceleration is
normal?
Increase voltage
compensation gain
Pr.07-38
The speed cannot follow
during acceleration or
over current stall
NO
NO
YES
B2. Test the loaded
acceleration
performance
10. Test of Speed
Steady State
Performance
Steady state of the
speed is normal?
Increase speed estimation bandwidth
Pr.10-32
Increase low-pass filter gain
Pr.10-34
Output frequency
Periodic low-frequency wave
Decrease speed estimation bandwidth
Pr.10-32
Decrease low-pass filter gain
Pr.10-34
Output frequency
Strong high-frequency
vibration or oc
NO
YES
YES
Finish
9. Running Test
with Load
B1. Low-frequency carrier
performance
(1/10 rated freq. and below)

Delta VFD2A8MS21ANSAA Specifications

General

Brand	Delta
Model	VFD2A8MS21ANSAA
Category	DC Drives
Language	English