IAI America ISWA - Manual (Page 40)

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7. Setting the Home Position
7. Setting the Home Position
7.1 Home-Return Operation
The actuator operates as shown below in the home-return operation:
(1) The moving direction is determined by the parameters set by the homing command. The software
senses the mechanical end in the homing operation.
(2) The slider reverses direction when this end is reached and the place where the Z-phase signal is
detected it becomes the reference point.
(3) After reversing at the end, it determines the point where the Z-phase signal is detected as the datum
point.
(4) The actuator moves the set offset amount in addition, and determines this point as the home position.
7.2 Fine Control of Home Position
Number of motor rotation after the actuator hitting the stopper till Z-phase signal is generated is already
adjusted before shipping out.
The standard value of the backing distance when the slider hits the stopper,reverses and then stops at the
home position is:
Model Name
Home Position Distance from
Mechanical Stopper (Approx. mm)
ISWA/ISWPA 5
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each actuator by changing the parameters based on this value.
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correct the parameter of the home preset value for XSEL an SSEL and the home-return offset amount
for SCON.
Make the value either positive or negative to the value currently set.
(3) If you allow for ample offset amount the movement range is that much more limited. If the offset is
greater than 1mm, you will have to reset the stroke soft limit.
7.3 Changing Home Direction
Please contact us if a change in the home direction after delivery is required since it requires adjustment
of the movement direction parameter and also the encoder Z-phase adjustment for some models.