Koso REXA Electraulic Xpac, Installation And Operation Manual

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Xpac
Installation Manual -- Version 5.1 (4/09)
H-10
REXA
Electraulic Actuators & Drives
Acceleration Breakpoint (Ab) specifies the position at which the actua-
tor will start accelerating from the minimum speed(dL). This position
is the difference between the current position and the target position.
Values from 0.1% to 5.0% difference may be selected. Recommended
initial settings are shown in Figure H.2. The effect of this parameter
on performance is indicated in Figure H.3.
Figure H.2
Recommended Initial Parameter Settings
Model ½D and D size 2D size
Power Module Power Module
L Series dG dL LA Ab dG dL LA Ab
2000 10 5 10 0.5 5 5 5 0.5
4000 - 15000 25 10 20 1.0 20 5 10 1.0
20000 or larger 50 20 40 2.0 50 20 40 2.0
R or D Series dG dL LA Ab dG dL LA Ab
1200, 2500, 5000 10 5 10 0.5 5 5 5 0.5
10000, 20000 25 10 20 1.0 20 5 10 1.0
50000 or larger 50 20 40 2.0 50 20 40 2.0
Figure H.3
To increase response To reduce overshoot
Parameter
(Shorter Time To Target Position)
dG INCREASE DECREASE
dL INCREASE DECREASE
LA INCREASE DECREASE
Ab INCREASE DECREASE
A specific installation, low dead-
band or specialized control criteria
may require adjustment to the initial
settings.