AS22 Series
Application Note
Miniature Kit Encoder
Broadcom
AS-22-Kit-Encoder-AN101
2
Step 2: PCB Installation
Remove the alignment sleeve. Align the PCB onto the base
plate with the two pins on the base plate. Make sure the
connector side of the PCB is aligned with the groove on
base plate.
CAUTION!
Do not touch optical sensor while handling the
PCB.
Figure 2: Align PCB to Pins
Figure 3: Ensure PCB Fully Seated on Base Plate
Step 3: Codewheel Gap Setting
Slide the spacer pin between the connector and latch until it
touches the motor shaft, as shown in
. Slide the hub
to the motor shaft with the code wheel facing the PCB, until
the hub flange touches the spacer pin.
Figure 4: Code Wheel Hub Assembly
Press down on the hub gently while tightening the set screw
with the hex wrench. The recommended torque to tighten
the set screw is 0.10 Nm to 0.13 Nm (0.9 in.lb to 1.15 in.lb).
A threadlocker can be applied to set the screw threads to
prevent the screw from unthreading during operation.
Remove the hex wrench and spacer pin.
CAUTION!
DO NOT touch code the wheel pattern during
installation.
DO NOT scratch the code wheel during spacer
pin removal.
Figure 5: Tighten Set Screw on Hub
Spacer pin
touch motor
shaft
Spacer pin
Hub
Latch
Connector
Hex wrench
