ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC DISCHARGE.

Description

The HEDS-5500/5540, HEDS-5600/5640, and HEDM-

5500/5600 are high performance, low cost, two and

three channel optical incremental encoders. These

encoders emphasize high reliability, high resolution,

and easy assembly.

Each encoder contains a lensed LED source, an inte-

grated circuit with detectors and output circuitry, and

a codewheel which rotates between the emitter and

detector IC. The outputs of the HEDS-5500/5600 and

HEDM-5500/ 5600 are two square waves in quadrature.

The HEDS-5540 and 5640 also have a third channel

index output in addition to the two channel quadrature.

This index output is a 90 electrical degree, high true

index pulse which is generated once for each full

rotation of the codewheel.

The HEDS series utilizes metal codewheels, while the

HEDM series utilizes a film codewheel allowing for

resolutions to 1024 CPR. The HEDM series is nont

available with a third channel index.

These encoders may be quickly and easily mounted to

a motor. For larger diameter motors, the HEDM-5600,

and HEDS-5600/5640 feature external mounting ears.

The quadrature signals and the index pulse are accessed

through five 0.025 inch square pins located on 0.1 inch

centers.

Standard resolutions between 96 and 1024 counts per

revolution are presently available. Consult local Avago

sales representatives for other resolutions.

HEDM-550x/560x

HEDS-550x/554x, HEDS-560x/564x

Note: Avago Technologies encoders are not

recommended for use in safety critical applications.

Eg. ABS braking systems, power steering, life support

systems and critical care medical equipment. Please

contact sales representative if more clarification is

needed.

Features

• Two channel quadrature output with optional index pulse

• Quick and easy assembly

• No signal adjustment required

• External mounting ears available

• Low cost

• Resolutions up to 1024 counts per revolution

• Small size

•–40

°C to 100°C operating temperature

•TTL compatible

• Single 5 V supply

HEDM-550x/560x

Quick Assembly Two and Three Channel

Optical Encoders

Data Sheet

Applications

The HEDS-5500, 5540, 5600, 5640, and the HEDM-

5500, 5600 provide motion detection at a low cost,

making them ideal for high volume applications. Typical

applications include printers, plotters, tape drives,

positioning tables, and automatic handlers.