S4 Miniature Optical Shaft Encoder

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  • S4 Miniature Optical Shaft Encoder
  • S4 Miniature Optical Shaft Encoder
  • S4 Miniature Optical Shaft Encoder

Overview

  • Miniature size
  • Low cost
  • High retention snap-in polarized connector
  • Tracks from 0 to 30,000 cycles/sec
  • Ball bearing option tracks up to 7,000 or 15,000 RPM
  • -10 to +85C operating temperature
  • 100 to 360 cycles per revolution (CPR)
  • 400 to 1440 pulses per revolution (PPR)
  • 2 channel quadrature TTL squarewave outputs

On January 16, 2012, the S4 part number will be modified. The S4 optical encoder will be offered with a differential output option; as a result, the S4 part number will be changed to...

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Product Specifications

SpecificationSleeve BushingBall Bearing
Acceleration 10,000 rad/sec² 250,000 rad/sec²
Vibration 5 Hz to 2 kHz, 20 G 5 Hz to 2 kHz, 20 G
Shaft Speed 100 RPM max. continuous 15,000 RPM max. continuous
Shaft Torque 0.5 ±0.2 in. oz.
0.3 in. oz. max. (N-option)		 0.05 in. oz.
Shaft Loading 2 lbs. max. dynamic
20 lbs. max. static		 1 lb. max.
Bearing Life > 1,000,000 revolutions L10 = (22/Fr)³ *
Where L10 = bearing life in millions of revs, and
Fr = radial shaft loading in pounds
Weight 0.46 oz. 0.42 oz.
Shaft Runout 0.0015 T.I.R. max. 0.0015 T.I.R. max.

* only valid with negligible axial shaft loading.

Shaft Brass or Stainless
Bushing Brass
Connector Gold plated
Hole Diameter 0.375" +0.005 - 0
Panel Thickness 0.125 in. max.
Panel Nut Max. Torque 20 in.-lbs.

 e_series_output_2.gif

ParameterTyp.Units
Symmetry, S 180 ± 16 electrical degrees
Quadrature Delay, Q 90 ± 12 electrical degrees

A leads B for clockwise shaft rotation, and B leads A for counterclockwise rotation viewed from the cover/label side of the encoder.

 

SpecificationsMin.Typ.Max.UnitsNotes
Supply Current - 21 27 mA
Supply Voltage 4.5 - 5.5 V
High Level Output 2.4 - - V loh = -1 mA
Low Level Output - - 0.4 V lol = 6 mA
Rise Time - 500 - ns Cl = 25 pF, Rl = 2.7 kΩ
Fall Time - 100 - ns
SpecificationsMin.Typ.Max.UnitsNotes
Supply Current - 22 30 mA
Supply Voltage 4.5 - 5.5 V
High Level Output 2.4 3.4 - V loh = -20 mA
Low Level Output - 0.2 0.4 V lol = 20 mA
Rise Time - 500 - ns
Fall Time - 100 - ns
4-pin Single-ended6-pin Differential
PinDescriptionPinDescription
1 +5VDC power 1 Ground
2 A channel 2 A channel
3 Ground 3 A- channel
4 B channel 4 +5VDC power
    5 B channel
    6 B- channel
Title Date Description Download
E4 - E4P - S4 Update - PCN 1014 11/29/2011 We have modifed the E4, E4P and S4 product lines in order to improve the performance and durability of the encoder. Changes include new molds for the plastic base and cover parts with an over-molded bushing in the S4 base, a new SMT connector (compatible with current mating connector), and a modified PCB profile to accommodate the new connector and plastic part modifications. Download

Product Description

Restriction of Hazardous Substances

On January 16, 2012, the S4 part number will be modified. The S4 optical encoder will be offered with a differential output option; as a result, the S4 part number will be changed to accommodate either the single ended or differential output options. The S4 part number will also have a place holder added for a possible future index option. The index option is currently not available and there is not a projected date at which it will be made available. The current "Power" option for the S4 will also be removed from the part number. The power option is very rarely selected and therefore is being eliminated from the S4 part number.

The S4 miniature 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 without index. The encoder utilizes an unbreakable mylar disk, metal shaft, and bushing or bearing. It operates from a single +5VDC supply.

The S4 encoder is available with ball bearings for motion control applications, or static drag to feel like a potentiometer for front-panel manual interface.

The reflective sensor incorporates an LED light source and a monolithic photo detector with signal shaping electronics, providing two channel bounceless quadrature TTL outputs.

The S4 can be connected by using a high retention 4 conductor snap-in polarized 1.25mm pitch connector. The mating connector is polarized and should attach smoothly to the encoder; do not force. See below for Cables & Connectors. 

Related
Product Notes
  • 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.

Purchasing

Configure and Purchase

1. CPR
2. Shaft



3. Index

4. Output


5. Torque



Product Part Number

This product requires configuration. Please supply the product options above.

Quantity Base Price
1 $51.65
10 $43.46
50 $38.53
100 $34.24
Over 100 Call for quote
Quantity
Unit Price

$51.65

Subtotal

$51.65

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

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