87
8.3 Parameter
Settings
If a parameter has been changed, always restart the controller using a software reset command or by
reconnecting the power.
8.3.1 Parameters Relating to the Actuator Stroke Range
z
Soft limit
Set the soft limit in the positive direction in parameter No. 3, and that in the negative direction in parameter
No. 4.
The factory setting for the soft limits conforms to the effective actuator length. Change the settings, as
necessary, to prevent crash with an obstacle or when the actuator must be stroked slightly beyond its
effective length.
A wrong soft limit setting will cause the actuator to crash into the mechanical end, so exercise due caution.
The minimum setting unit is “0.01 [mm].”
(Note) To change a soft limit, set a value corresponding to 0.3 mm outside of the effective range.
Example) Set the effective range to between 0 mm and 80 mm
Parameter No. 3 (positive side) 80.3
Parameter No. 4 (negative side) –0.3
z
Zone boundary
Set the zone in which a zone output signal (ZONE1 or ZONE2) will turn ON.
(Note) ZONE2 is enabled only when “2 zone output signals” is selected as the PIO pattern.
The zone signal turns ON only when the current coordinate position is inside the negative (-) boundary
and positive (+) boundary settings.
The positive and negative boundaries for the ZONE1 signal are set in parameter No. 1 and No. 2,
respectively.
The positive and negative boundaries for the ZONE2 signal are set in parameter No. 23 and No. 24,
respectively.
The minimum setting unit is “0.01 [mm].”
Example) Use ZONE1 as an intermediate limit switch inside 100 and 200 mm, and use ZONE2 as a
simple ruler inside 270 and 275 mm, with an actuator having a 300-mm stroke
Parameter No. 1 (positive side) 200, parameter No. 2 (negative side) 100
Parameter No. 23 (positive side) 275, parameter No. 24 (negative side) 270
0
(Home)
ZONE1 turns ON
ZONE2 turns ON
100
200
270 275
300 mm
Soft limits set in the controller
Approx.
0.3 mm
Effective range
Allowable jogging/inching range after home return
8 0
Approx. 0.1 mm
Approx. 0.1 mm
0
Approx.
0.3 mm