Installation Instructions

Rotary Encoders - Alignment

Page 7
5
If benching dimensions cannot be provided, proper sensor alignment may require minor
adjustments to each sensor’s position with respect to the scale. This can be performed easily
using the LED alignment indicators, as illustrated below.
For sensor 1, the Sig 1 multicolor LED will turn from red to yellow-orange to green depending
on sensor alignment. Slowly move the sensor by allowing it to slide on the mounting surface
until the Sig 1 multicolor LED turns green. Optimal alignment will be displayed as a “Bright
Green” LED. Repeat the last step, using sensor 2 and the Sig 2 multicolor LED, to align
sensor 2.
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: Confirm that the Proper Alignment LED blinks when passing over the index.
If not, readjust the sensor in the Y direction and repeat the above procedure. When alignment is
completed, tighten the sensor mounting screws (0.37Nm [3.3 inch-lbs.] maximum torque).
6Confirm proper alignment over the full range of motion.
The “Proper Alignment” LED must remain green over the entire
range for both sensors. If not aligned over the entire range of
motion, loosen the sensors mounting screws and repeat step 5.
x
Y
Z
θz
To align the sensor, move it
in the Y or θz directions.

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This procedure must be completed for proper systemoperation each time the sensors are aligned or if theSmartPrecision electronics module is replaced
Position each sensor at least 7mm (1/4”) away from the index
mark on the scale. Next, for sensor 1, push the
Index/Calibration button inside the module just once. The
Power/Calibration indicator for sensor 1, will flashcontinuously.
Move the scale past sensor 1 in both directionsso that the
index mark passes under sensor 1.When the calibration pro-
cedure is complete, the Power/Calibration indicatorfor sensor 1
stops flashing.
To calibrate sensor 2, push the Index/Calibration button twice. The
Power/Calibration indicator for sensor 2 will flash continuously.
Move the scale past sensor 2 in both directionsso that the
index mark passes under sensor 2.When the calibration pro-
cedure is complete, the Power/Calibration indicatorfor sensor 2
stops flashing.
7
Sensor 1: Proper
Alignment indicator
Sensor 1:
Calibration / Index
Set Up button
Push once.
Sensor 2: Power/
Calibration indicator
Sensor 2:
Calibration / Index
Set Up button
Push twice.
Sensor 2: Proper
Alignment indicator
Sensor 1: Power/
Calibration indicator
Move the scale past both
sensor s so that the index
mark passes under both
sensorsas described in
step 7.
Improper
Alignment LED
Red:
Sensor 1
Power/
Calibration
Sensor 1
Improper
Alignment LED
Red:
Sensor 2
Power/
Calibration
Sensor 2
Improved
Alignment LED
Yellow-Orange:
Sensor 1
Power/
Calibration
Sensor 1
Improved
Alignment LED
Yellow-Orange:
Sensor 2
Power/
Calibration
Sensor 2
Proper
Alignment LED
Green:
Sensor 1
Power/
Calibration
Sensor 1
Proper
Alignment LED
Green:
Sensor 2
Power/
Calibration
Sensor 2