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S4T Miniature Optical Shaft Encoder

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Overview

  • Small size
  • Low cost
  • High retention snap-in polarized connector
  • -20C to 100C operating temperature
  • 100 to 500 cycles per revolution (CPR)
  • 400 to 2,000 pulses per revolution (PPR)
  • 2 channel quadrature TTL square wave outputs

The S4T miniature optical shaft encoder is a non-contacting rotary to digital converter. The S4T incorporates an LED light source, monolithic photo detector and mylar disk. A metal shaft with bushing or bearing versions...

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Product Specifications

ParameterValueUnits
Operating Temperature -20 to 100 C
Electrostatic Discharge, IEC 61000-4-2
Single-ended (-S version)
Differential (-D version) 

± 12
± 7 

kV
Shock, 6 millisecond, half-sine 75 G
Vibration (20Hz to 2kHz, sinusoidal) 20 G
SpecificationSleeve BushingBall Bearing
Max. Acceleration 10000 rad/sec² 250000 rad/sec²
Max. Shaft Speed 100 rpm 15000 rpm
Max. Shaft Torque 0.5 ±0.2 in-oz (D-option)
0.3 in-oz (N-option)
0.05 in-oz
Max. Shaft Loading 2 lbs. dynamic
20 lbs. static
1 lb.
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 0.48 oz. 0.43 oz.
Max. Shaft Total Indicated Runout 0.0015 in. 0.0015 in.
Max. Panel Nut Tightening Torque 20 in-lbs 20 in-lbs
Technical Bulletin TB1001 - Shaft and Bore Tolerances Download

* only valid with negligible axial shaft loading.

 e_series_output_2.gif

ParameterMin.Typ.Max.Units
Symmetry, S 105 180 255 electrical degrees
Quadrature Delay, Q 30 90 150 electrical degrees

(1) A leads B for clockwise shaft rotation, B leads A for counter clockwise shaft rotation viewed from the cover/label side of the encoder.

(2) Typical values represent the encoder performance at typical mounting alignment, whereas the maximum values represent the encoder performance across the range of recommended mounting tolerance.

SpecificationsMin.Typ.Max.UnitsNotes
Supply Voltage 4.5 5.0 5.5 V  
Supply Current   25 30 mA no load
Low-level Output     0.4 V IOL = 8 mA
  0.035   V no load
High-level Output 2.4     V IOH = -8 mA
  4.0   V no load
Output Rise Time   100   ns no load
Output Fall Time   50   ns no load
SpecificationsMin.Typ.Max.UnitsNotes
Supply Voltage 4.5 5.0 5.5 V  
Supply Current   27 32 mA no load
Single-Ended Output Voltage High 4.75 5.0   V Min. @ 25mA load, Typ. @ no load
Single-Ended Output Voltage Low   0.25 0.60 V Typ. @ no load, Max. @ 4.5mA load
Differential Output Voltage 3.0 3.8   V RL = 100 ohm
Differential Output Rise/Fall Time     20 ns
4-pin Single-ended (1)6-pin Differential (2)
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

(1) 4-pin single-ended mating connector is CON-MIC4
(2) 6-pin differential mating connector is CON-MIC6

Product Description

Restriction of Hazardous Substances

The S4T miniature optical shaft encoder is a non-contacting rotary to digital converter. The S4T incorporates an LED light source, monolithic photo detector and mylar disk. A metal shaft with bushing or bearing versions are available. Useful for position feedback or manual interface, the encoder converts real-time shaft angle, speed, and direction into TTL-compatible quadrature outputs without index.  It operates from a single +5VDC supply.

The S4T encoder is available with ball bearings for motion control applications, or static drag to feel like a potentiometer for front-panel manual interface.

The S4T uses a high retention, 4 conductor snap-in polarized 1.25mm pitch connector. Mating cables and connectors (See the Cables / Connectors web page) are not included, and are available separately.

Related

Cable/connector assembly not included and must be ordered separately.

Related Products & Accessories

Product Configuration

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2. Shaft



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Quantity Unit Price
1 $65.00
5 $60.00
10 $57.56
50 $55.12
Over 50 Call for Quote
Quantity
Unit Price

$65.00

Subtotal

$65.00


For purchasing or volume discounts, please use the above part number and contact us at:

sales@usdigital.com or

800.736.0194 (Toll Free)
360.260.2468 (Local)