SMC Networks LECSN-T Series - Page 250

7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 21
(b) Switching timing chart
After-sw itching gain
63.4%
CDT = 100 ms
Before-sw itching gain
Gain switching
Droop pulses
[pulse]
+CDL
-CDL
0
Command pulses
Droop pulses
Command pulses
Load to motor inertia ratio
4.00
→
10.00
→
4.00
→
10.00
Position loop gain
120
→
84
→
120
→
84
Speed loop gain
3000
→
4000
→
3000
→
4000
Speed integral compensation
20
→
50
→
20
→
50
3) When the gain switching time constant is disabled
(a) Switching time constant disabled was selected.
The gain switching time constant is disabled. The time constant is enabled at gain return.
The following example shows for [Pr. PB26 (CDP)] = 0103, [Pr. PB27 (CDL)] = 100 [pulse], and [Pr.
PB28 (CDT)] = 100 [ms].
Command pulses
Droop pulses
+100 pulses
-100 pulses
0Droop pulses [pulse]
Sw itching time constant
disabled
Sw itching at 0 ms
After-switching gain
Before-switching gain
Sw itching at [Pr. PB28 (CDT)] = 100 [ms] only when gain sw itching off (when returning)
CDT = 100 ms
63.4%
Sw itching at 0 ms
After-switching gain
Gain sw itching