MicroE 3500V Mercury - Manual (Page 8)

Installation Instructions
Rotary Encoders
Attach your hub/scale assembly
to the rotary device. Refer to
the interface drawing. The
reflective surface of the scale
must face the sensor.
Be sure the grating surface of
the scale faces the sensor.
Insure that there is no contact
between these surfaces or
damage may result.
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Install the sensor on your mounting surface referencing the
appropriate datum surface as shown on the interface drawing.
Use 2 washers per mounting screw.
Benching pins may be used to locate the sensor if the system
mechanical tolerances are adequate. See data sheet for alignment
tolerances, or keep mounting screws loose for sensor alignment if
benching pins are not used.
Connect the vacuum cable to the feed-through in the vacuum wall.
Wires of the same color must be connected through the vacuum
chamber wall (see Interface Drawing for color assignments).
Vacuum cables are shipped with “flying” leads”. Customers are
responsible for connector selection and installation.
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CAUTION: observe precautions for handling electrostatic
sensitive devices.
Install the double shielded “pigtail” cable from vacuum wall to
electronics into the SmartPrecision electronics module. This cable
is shipped with “flying” leads. Customers are responsible for
connector selection and installation.
A) Remove the three cover screws and the top half of the
connector housing. Do not pull on the 15-pin D-sub
connector or the circuit board under the insulation layer.
B) Attach the sensor's 5 X 2 connector to the mating 5 X 2
connector on the circuit board.
C) Route the double shielded “pigtail” cable through its
channel in the center of the connector body and place the
cable's hex sleeve in the matching recess. Attach the top half
of the connector housing to the bottom half using the three
cover screws. The longest screw is used in the hole adjacent
to the cable exit.
D) Connect the customer supplied connector to the feed-through
in the vacuum wall.
Be sure the source power is off before
connecting the SmartPrecision plug.
Connect the SmartPrecision electronics to the
controller using the pinout diagram described on the
interface drawing.
Pin 1 must not be connected under any
circumstances, including connection to wires within
extension cables and floating wires. Any connection
to Pin 1 could damage or disable the encoder
system.
Insure proper system grounding. Refer to the
procedure on pg 9.
Tighten the thumb screws.
Power up the system. The Power/Calibration
indicator will illuminate.
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