HEDM-55xx/560x & HEDS-55xx/56xx
Quick Assembly Two and Three Channel Optical Encoders
Data Sheet
Description Features
The HEDS-5500/5540, HEDS-5600/5640, HEDM-5500/5540 Two channel quadrature output with optional index
and HEDM-5600 are high performance, low cost, two
pulse
and three channel optical incremental encoders. These
Quick and easy assembly
encoders emphasize high reliability, high resolution, and
easy assembly. No signal adjustment required
External mounting ears available
Each encoder contains a lensed LED source, an integrated
circuit with detectors and output circuitry, and a codewheel
Low cost
which rotates between the emitter and detector IC. The
Resolutions up to 1024 counts per revolution
outputs of the HEDS-5500/5600 and HEDM-5500/ 5600
Small size 40C to 100C operating temperature
are two square waves in quadrature. The HEDS-5540/5640
and HEDM-5540 also have a third channel index output in
TTL compatible
addition to the two channel quadrature. This index output
Single 5 V supply
is a 90 electrical degree, high true index pulse which is
generated once for each full rotation of the codewheel.
Applications
The HEDS series utilizes metal codewheels, while the
The HEDS-5500, 5540, 5600, 5640, and the HEDM-5500,
HEDM series utilizes a film codewheel allowing for resolu -
5540,5600 provide motion detection at a low cost, making
tions to 1024 CPR.
them ideal for high volume applications. Typical applica-
tions include printers, plotters, tape drives, positioning
These encoders may be quickly and easily mounted to a
tables, and automatic handlers.
motor. For larger diameter motors, the HEDM-5600, and
HEDS-5600/5640 feature external mounting ears.
Note: Avago Technologies encoders are not recommend-
ed for use in safety critical applications. Eg. ABS braking
The quadrature signals and the index pulse are accessed
systems, power steering, life support systems and critical
through five 0.025 inch square pins located on 0.1 inch
care medical equipment. Please contact sales representa-
centers.
tive if more clarification is needed.
Standard resolutions between 96 and 1024 counts per
revolution are presently available. Consult local Avago
sales representatives for other resolutions.
ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC DISCHARGE. Package Dimensions
HEDS-5500/5540, HEDM-5500/5540
*Notes:
For the HEDS-5500 and HEDM-5500, Pin #2 is a No Connect.
For the HEDS-5540 and HEDM-5540, Pin #2 is CH. I, the index output.
HEDS-5600/5640, HEDM-5600, HEDM-5640
*Notes:
For the HEDS-5600 and HEDM-5600, Pin #2 is a No Connect.
For the HEDS-5640 and HEDM-5640, Pin #2 is CH. I, the index output.
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