MicroE 1500V Mercury - Manual (Page 9)

Page 7
4
INDEX TRACK ALIGNMENT
The M1500V must be aligned for both the main and index tracks.
When properly aligned, the sensor will produce an index window as
the sensor passes over the index mark. The index window is
approximately one fringe wide (20µm). To verify proper index track
alignment, use a digital oscilloscope triggered on the index window.
Refer to the interface drawing for the index window pinout.
Confirm proper alignment of the main track over the full range of
motion. If not aligned over the entire range of motion, loosen the
sensor mounting screws and repeat steps 4 and 5.
5
MAIN TRACK ALIGNMENT
If benching dimensions cannot be provided, proper
sensor alignment may require minor adjustments
to the sensor position with respect to the scale.
This can be performed by maximizing the sine
signal from the M1500V.
Using an oscilloscope, monitor the sine or cosine signal (refer to
the interface drawing for pinouts) while moving the sensor over
the scale. Align the sensor until 0.8 volts peak-to-peak +/- 25%
is obtained. When alignment is completed, tighten the sensor
mounting screws (0.37Nm [3.3 inch-lbs.] maximum torque).
x
Y
Z
θ
z
To align the sensor, move
it in the Y or
θ
z directions.
0
0.6
1.2
0.8 Vpp
Installation Instructions
Linear Encoders - Using Sin/Cos Signals - Alignment
1.7 V offset
(nominal)