Application Note
Broadcom
AS-22-Kit-Encoder-AN101
December 15, 2017
Introduction
The Broadcom
®
AS22 Series kit encoder solution offers a
compact size with an overall diameter of 22 mm and height
of 10.9 mm for the space-constrained application.
To meet the growing demand for high-precision application,
the AS22 Series offers a wide range of incremental
resolution, ranging from 360 to 2048 counts per revolution
(cpr).
The encoder provides A and B channel of incremental digital
signal output, as well as a digital index pulse per revolution
enabling the homing positioning operation. The
three-channel solution comes with the optional RS 422
compatible differential output offering the high transmission
noise immunity for signal over cable.
To cater to a wide selection of industrial applications, this
encoder is design to operate in a robust environment with
the operating temperature ranging from –20°C to +100°C.
The AS22 Series is designed for ease of use. The kit
solution is engineered with the hassle-free installation,
eliminating the need for a tedious alignment process.
This application note provides step-by-step mounting
instructions on how to install the AS22 series encoder onto
a motor.
Encoder Mounting and Assembly
Instruction
Step 1: Base Plate Centering
Place the base plate over the motor shaft, and make sure it
sits flat on the mounting surface. Slide the alignment sleeve
to the motor shaft with the taper surface facing the base
plate. Ensure the alignment sleeve is aligned to the hole on
the base plate. Align the two holes on the base plate to the
screw holes on mounting surface. Slightly pressing the
alignment sleeve, and tighten the 2x M2.5 screw with
0.10 Nm to 0.23 Nm (0.9 in.lb to 2.0 in.lb) to secure the
base plate. It is recommended that you apply adhesive to
the screw-baseplate interface to prevent screw loosening
due to effects of high temperatures on plastic.
Figure 1: Base Plate Assembly
Base plate
Alignment sleeve
AS22 Series
Miniature Kit Encoder
