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4. PARAMETERS FOR POSITIONING CONTROL
4.3.4
Speed integral compensation
Load Inertia Ratio
2
(GD
/GD
L
M
Set value (ms)
4.3.5
In-position range
4.3.6
Feed forward gain
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(1) This parameter is used to increase frequency response in speed control and
improve transient characteristics.
(2) If the overshoot in acceleration/deceleration cannot be made smaller by
adjusting speed loop gain or speed control gain, increasing the setting for the
speed integral compensation value will be effective.
(3) A guide to setting the speed integral compensation is presented in Table 4.6
below.
Table 4.6 Guide to Speed Integral Compensation Setting
1
3
2
)
20
30
(1) The "in-position" refers to the quantity of droop pulses in the deviation counter.
(2) If an in-position value is set, the in-position signal (M1602 + 20n) will come ON
when the difference between the position command and position feedback from
the servomotor enters the set range.
Amount of
droop
In-position signal
ON
(M16m2)
This parameter is used to improve the follow-up of the servo system.
The setting range is as follows:
When using an MR-
search engine
30 or
5
10
20
Greater
40
60
100
200
OFF
-B...................0 to 100 (%)
4 − 14
Remarks
Setting possible within the range 1 to 9999
(valid range: 1 to 1000)
Set value for in-position range
t
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