HEDC-55xx/HEDC-56xx
Two or Three Channel Quick Assembly Encoders
With Connector Latch
Data Sheet
Description
The HEDC-5xxx-xxx, while similar to the industry standard
HEDS-5xxx kit encoder, provides a connector latch on
the cover housing to improve connector retention. This
device is built upon the HP/Agilent/Avago HEDS-9000
series encoder module, and provides the same perfor-
mance, low cost, high reliability, high resolution, and ease
of assembly customers have come to expect.
Each encoder contains a lensed LED source, an integrated
circuit with detectors and output circuitry. A codewheel
(disk) which rotates between the emitter and detector IC
generates two square waves in quadrature. Three channel
units include an index pulse (high state) of 90°e, which is
generated once for each full rotation.
HEDC-5xxx-xxx provides resolutions from 50 to 1024 CPR,
and accommodating shaft diameters from 2 mm to 8 mm.
This kit encoder may be quickly and easily mounted to
a motor. The electrical interface is through ve (single
ended) or ten (dierential versions) 0.025 inch square
pins on 0.100 centers. Interface cable assemblies to meet
customer requirements are available also.
The dierential (line driver) version oers enhanced per-
formance when the encoder is used in noisy environ-
ments, or when it is required to drive long cables. It uses
an industry standard RS422 compatible line driver IC, AEIC
7272, which provides dierential outputs for each of the
encoder channels. Suggested line receivers are 26LS32
and 26LS33.
Features
• Available in two or three channel encoder A, B and I
• Latching connector design
• Single 5 V supply
• Resolution of up to 1024 CPR
• TTL compatible, with single ended or dierential
output.
• Quick assembly
• No signal adjustment required
• Small size -40° C to 100° C operating temperature
Applications
High volume applications such as printers, plotters, tape
drives, textile machines, positioning tables and also
automatic handlers among others.
Note: Avago Technologies encoders are not recommended for use in
safety critical applications, e.g., ABS braking systems, power steering, life
support systems and critical care medical equipment. Avago’s products
and software are not specically designed, manufactured or authorized
for sale as parts, components or assemblies for the planning, construc-
tion, maintenance or direct operation of a nuclear facility or for use in
medical devices or applications. Customers are solely responsible, and
waive all rights to make claims against Avago or its suppliers, for all
losses, damage, expense or liability in connection with such use. Please
contact your local sales representative if more clarication is needed.
