LS Industrial Systems SV-iV5 Series - Page 124

6. Function Description
6-56
Code LCD display Description Setting range Unit Factory setting
CON_09 ASR Ramp
Ramp time for ASR gain
switch-over
10 ~ 10000 ms 1000
CON_10 ASR TarSpd
Target Speed after ASR
gain switch-over
0.0 ~ 3600.0 rpm 0.0
z How to set the P and I gain of the ASR (Automatic Speed Regulator)
The P gain(%) of ASR becomes equal to the torque reference(%) when the speed difference between the speed
command and the real speed fed back to the ASR is identical to the rated slip. The I gain is the time to be taken to
accumulate the torque reference from 0 to 100%. That is, The output of ASR becomes equal to the 100% of the torque
reference when P gain is set to 100% and the speed difference is equal to the rated slip. Speed response characteristic
may be better, but the control system may be unstable when P gain is increased or I gain is decreased. On the contrary,
Speed response characteristic may be degraded if P gain is decreased or I gain is increased.
ASR PI
Gain
Kp=100% Ki=0%
Rated Slip
100% Torque Reference
CON_03
P Gain
Gain Ramp time
CON_09
CON_06
ON OFF
P4
(ASR Gain Sel.)