US Digital

S5 Optical Shaft Encoder

This product has been succeeded by the S5 Optical Shaft Encoder.

This next generation product is highly recommended for all new designs and applications. Learn more »

S1 Optical Shaft Encoder

Overview

  • Small size
  • Low cost
  • 2-channel quadrature,TTL squarewave outputs
  • 3rd channel index option
  • Tracks from 0 to 100,000 cycles/sec
  • Ball bearing option tracks to 10,000 RPM
  • -40 to +100C operating temperature
  • Single +5VDC supply

The S1 series optical shaft encoder is a non-contacting rotary to digital converter. Useful for position feedback or manual interface, the encoder converts real-time shaft angle, speed, and direction into TTL-compatible quadrature outputs with or...

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Product Specifications

ParameterSleeve Bushing Ball Bearing
Acceleration 250,000 rad/sec² 250,000 rad/sec²
Vibration 20 g. 5 to 2KHz 20 g. 5 to 2KHz
Shaft Speed 100 RPM max. continuous 10,000 RPM max. continuous
Shaft Rotation Continuous and reversible -
Shaft Torque 0.5 ±0.2 in. oz.
0.3 in. oz. max. (N-option)		 0.05 in. oz. max.
Shaft Loading 2 lbs. max. dynamic
20 lbs. max. static		 1 lb. max.
Bearing Life - (40/P)³ = life in millions of revs.
where P = radial load in pounds
Weight 0.70 oz. 0.70 oz.
Shaft Runout 0.0015 T.I.R. max. 0.0015 T.I.R. max.

B leads A for clockwise shaft rotation, and A leads B for counterclockwise rotation viewed from the shaft side of the encoder (see the EM1 / HEDS page).

  • Specifications apply over entire operating temperature range.
  • Typical values are specified at Vcc = 5.0Vdc and 25°C.
  • For complete details see the EM1 and HEDS product pages.
  Supply Current Output voltage low Output voltage high 
Resolution Typ / Max Max Min Based on
50,96, 100, 110, 120, 192, 200, 250, 256, 360, 400, 500, 512, 540 CPR, non-index 17 / 40 mA 0.4 volts @ 3.2mA 2.4 volts @ -200uA Low-res HEDS
1000, 1016, 1024 CPR, non-index 57 / 85 mA 0.5 volts @ 8mA 2.4 volts @ -40uA High-res HEDS
32 CPR, with index 27 / 30 mA 0.5 volts @ 8mA 2.0 volts @ -8mA EM1
50,96, 100, 192, 200, 250, 256, 360, 400, 500, 512 CPR, with index 57 / 85 mA 0.5 volts @ 8mA 2.4 volts @ -40uA High-res HEDS
720, 900, 1000, 1024, 1250 CPR, with index 55 / 57 mA 0.5 volts @ 8mA 2.0 volts @ -8mA EM1
ParameterDimension
Shaft Brass or stainless
Bushing Brass
Connector Gold plated
ParameterDimension
Hole Diameter 0.375" +0.005 / -0
Panel Thickness 0.125 in. max.
Panel Nut Max. Torque 20 in.-lbs.
ParameterDimension
Operating Temperature -40 to +125C
Storage Temperature -55 to +125C
ESD 2 kV minimum
Humidity Non-condensing 5 to 85%
ParameterDimension
1 Ground
2 Index
3 A channel
4 +5VDC power
5 B channel

Product Description

RoHS Compliant

The S1 series optical shaft encoder is a non-contacting rotary to digital converter. Useful for position feedback or manual interface, the encoder converts real-time shaft angle, speed, and direction into TTL-compatible quadrature outputs with or without index. The encoder utilizes an unbreakable mylar disk, metal shaft and bushing, LED light source, and monolithic electronics. It operates from a single +5VDC supply.

The S1 is normally designed for applications of 6 feet or less. For longer cable lengths, adding a PC4 / PC5 differential line driver is recommended.

Three shaft torque versions are available. The standard torque version has a sleeve bushing lubricated with a viscous motion control gel to provide torque and feel that is ideal for front panel human interface applications.

The no torque added option has a sleeve bushing and a low viscosity lubricant (that does not intentionally add torque) for low RPM applications where a small amount of torque is acceptable.

The ball bearing version uses miniature precision ball bearings that are suitable for high speed and ultra low torque applications.

Connection to the S1 series encoder is made through a 5-pin standard connector (sold separately). The mating connectors are available from US Digital with several cable options and lengths.

Product Notes
  • Cables and connectors are not included and must be ordered separately.
  • For ordering information please see the Compatible Cables / Connectors section above.
  • US Digital warrants its products against defects in materials and workmanship for two years. See complete warranty for details.
Related Documentation

Purchasing

Configure and Purchase

1. CPR
2. Shaft


3. Index


4. Torque



5. Housing


Product Part Number
Quantity Price
1 $69.97
10 $60.42
50 $53.51
100 $49.99
Quantity
Unit Price

$69.97

Subtotal

$69.97

For your convenience, use the above part number to order via phone 800.736.0194

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