User Information Guide
17
WWW.PARKERMOTION.COM
PH: (724)
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861
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8200
Setting the Optical Encoder Limits
The mSR100 with the optical encoder option comes equipped with adjustable end of travel limit
sensors. The sensors are activated by magnetic targets located in a slot on the encoder scale
bracket as shown in Image #3 below. The factory setting location of the limit sensor targets provide
the full nominal travel of the stage with approximately 2mm of over travel before the stage en-
counters the hard stop.
To adjust travel, simple loosen the screw on the target ~1/4 turn using a 1.3mm hex wrench, slide
the target to the desired position, and tighten the screws.
NOTE: The active length of the target is approximately 9mm. If the target is moved greater than 9
mm from the stage hard stop, the stage can move beyond the active area of the target and shut off
on the other side of the target. This can lead to having the stage behind a limit sensor. Caution in
setup and programming should be taken to avoid this potential issue.
Limit sensor hysteresis: Limit sensor can have up to 1.5 mm of hysteresis which means after activa-
tion the stage must move more than 1.5 mm away from the activation point to release the limit
sensor from being active.
Image 3
Summary of Contents for MSR Series
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