S4T Miniature Optical Shaft Encoder

S4T Features

  • Small size
  • Low cost
  • High retention snap-in polarized connector
  • -20C to 100C operating temperature
  • 100 to 1,000 cycles per revolution (CPR)
  • 400 to 4,000 pulses per revolution (PPR)
  • 2 channel quadrature TTL square wave outputs

See more info below

Configure the S4T

S4T Product Description

Restriction of Hazardous Substances

The S4T miniature optical shaft encoder is a non-contacting rotary to digital converter. The S4T contains an LED light source, monolithic photo detector and mylar disk. The S4T encoder is available with a shaft bushing or ball bearings for motion control applications, or with shaft torque designed to feel like a potentiometer for front-panel manual interfaces. 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 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.

Product Specifications

View here or download the specifications

Environmental

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

Mechanical

SpecificationSleeve BushingBall Bearing
Max. Acceleration 10000 rad/sec² 250000 rad/sec²
Max. Shaft Speed 100 rpm 15000 rpm for CPR < 500
12000 rpm for CPR = 500
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 > 1000000 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.

Phase Relationship

 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) B leads A for clockwise rotation, A leads B for counter clockwise rotation viewed from the shaft side of the encoder.

Single-ended Electrical

SpecificationsMin.Typ.Max.UnitsNotes
Supply Voltage 4.5 5.0 5.5 V  
Supply Current   25 30 mA CPR ≤ 500, no load
  34 42 mA CPR > 500, no load
Low-level Output     0.4 V CPR ≤ 500, IOL= 8 mA
CPR > 500, IOL= 5 mA
  0.035   V no load
High-level Output 2.4     V CPR ≤ 500, IOH= -8 mA
CPR > 500, IOH= -5 mA
  4.0   V no load
Output Rise Time   100   ns no load
Output Fall Time   50   ns no load

Differential Electrical

SpecificationsMin.Typ.Max.UnitsNotes
Supply Voltage 4.5 5.0 5.5 V  
Supply Current   27 32 mA CPR ≤ 500, no load
36 44 mA CPR > 500, 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

Pin-out

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 Change Notifications

TitleDateDescriptionDownload
Updated PCB for E4T and S4T - PCN 6466 1/29/2018 This notice is to inform our customers of a PCB design change that is being implemented for all of the E4T and S4T product lines. The new PCBs will improve overall product performance and enhance robustness of these product lines. The new PCBs can be indentified by their blue color (instead of black) and have two mounting holes that mate with the base plate instead of one hole and one slot. This change has no impact on form, fit or function for either the E4T or S4T. Download
E4T, S4T and E8T Laser Markings - PCN 6227 8/8/2017 This notification is to inform our customers of a change to product markings for the E4T, E8T, and S4T series of encoders. The new marking will be utilized across all three product lines. We are making this change to improve readability for our customers and to provide consistency across the product lines.
Download

Additional Information

Product Notes

  • Cables and connectors are not included and must be ordered separately.
  • For ordering information please see the Compatible Cables / Connectors section above.
  • View Shaft and Bore Tolerances - TB1001

Downloads Available

DATASHEETS

3D Model Downloads

Please configure your product first to download a 3D model.
(Note: The formats below will become links if there are 3D models available.)

    • SolidWorks format
    • IGES format
    • Parasolid format

    Related Products & Accessories

    The following are related products for the S4T

    Product Configurator

    For pricing, this product requires configuration.

    Begin by completing either Option 1 or 2 below. Questions? Contact our support team.

    Option 1: Configure the Product

    Use the configuration tool to provide information regarding your product needs. Not sure what to do or need additional assistance? Our support team is here to help.

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    1. CPR

    2. Shaft




    3. Output



    4. Torque




    Option 2: Enter the Product Part Number Directly

    If you know your product part number, enter it in the following field. The part number format looks something like this: E5-5000-394-IE-S-D-D-3...


    S4T Pricing

    Quantity Unit Price
    1 $65.00
    5 $60.00
    10 $57.56
    50 $55.12
    100 $52.68
    Over 100 Call for Quote
    Quantity Unit Price Subtotal
    $65.00 $65.00

    For purchasing or volume discounts, please configure the part above, then use the completed part number and contact us!


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