Improvement Of Characteristics During Acceleration/Deceleration - Mitsubishi Electric MELDAS MDS-B-SVJ2 Series Specifications And Instruction Manual

5-3-6 Improvement of characteristics during acceleration/deceleration

(1) SHG control (option function)
Because SHG control has a smoother response than conventional position controls, the
acceleration/deceleration torque (current FB) has more ideal output characteristics (A constant
torque is output during acceleration/deceleration.) The peak torque is kept low by the same
acceleration/deceleration time constant, enabling the time constant to be shortened.
Refer to item "(3) SHG control" in section "5-2-3 Position loop gain" for details on setting SHG
control.
Speed command
(r/min.)
Current FB
(stall %)
Speed command
(r/min.)
Current FB
(stall %)
No. Abbrev.
SV003 PGN1
Position loop gain 1
(SV049) (PGN1sp)
SV004 PGN2
Position loop gain 2
(SV050) (PGN2sp)
SV057 SHGC
SHG control gain
(SV058) (SHGCsp)
Speed loop lead
SV008 VIA
compensation
Acceleration rate
SV015 FFC
feed forward gain
Chapter 5 Adjustment
3000
0
-3000
200
0
-200
Acceleration/deceleration characteristics during conventional control
3000
0
-3000
200
0
-200
Acceleration/deceleration characteristics during SHG control
Setting
Parameter name
ratio
1
8
3
6
Set 1900 as a standard value during SHG control.
Set 100 as a standard value during SHG control.
Setting example
23 26 33 38
62 70 86 102
140 160 187 225
5-23
Time
Time
Time
Time
Explanation Setting range
47
Always set a
combination of 3
125
parameters.
281
1 ~ 200
0 ~ 999
0 ~ 999
1 ~ 9999
0 ~ 999