Hitachi Vector Control with the SJ300 Inverter User Manual

Table 2 shows suggestions for adjusting the SLV and other related parameters to correct various phenomena.
Table 2. Suggestions for tuning
# Phenomena Parameter How to adjust
1
Actual speed is faster than the target speed.
(Speed deviation is +)
H021
Decrease R2 value
(Minimum target is 80% of the preset value)
2
Actual speed is slower than the target speed.
(Speed deviation is - )
H021
Increase R2 value
(Maximum target is 120% of the preset value)
Insufficient torque at low speed (~ few Hz) H020
Increase R1 value
(Maximum target is 120% of the preset value)
3
H023
Increase Io value
(Maximum target is 120% of the preset value)
4 Shock at start H024 Decrease J
5 Unstable motor rotation H005 Decrease speed response factor
H024 Decrease J
H006
Increase / decrease stability control factor
(Increase or decrease depends on the situation.)
A045 Decrease output gain
A081 Set AVR function to OFF
b083 Decrease carrier frequency
6
Insufficient torque at low speed due to torque
limit action
b021,
b041
~b044
Set;
Torque limit level > Overload restriction level
H005 Increase speed response factor
H050 Increase P-gain of speed response factor
7 Response is slow
H051 Decrease I-gain of speed response factor
H005 Decrease speed response factor
H050 Decrease P-gain of speed response factor
8
Speed overshoot due to too quick
response
H051 Increase I-gain of speed response factor
*Refer to Table 3 for a standard (default) motor parameter settings for SJ300 series inverter.

Hitachi Vector Control with the SJ300 Inverter Specifications

General

Brand	Hitachi
Model	Vector Control with the SJ300 Inverter
Category	Inverter
Language	English