S1 Optical Shaft Encoder

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Overview

  • Ball bearing option tracks to 10,000 RPM
  • 2-channel quadrature, TTL squarewave outputs
  • 3rd channel index option available on some resolutions
  • 32 to 5,000 cycles per revolution (CPR)
  • 128 to 20,000 pulses per revolution (PPR)
  • Wide 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...

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Product Specifications

ParameterValueUnits
Operating Temperature, CPR < 2000 -40 to 100 C
Operating Temperature, CPR ≥ 2000 -25 to 100 C
Vibration (5Hz to 2kHz) 20 G
Electrostatic Discharge, IEC 61000-4-2
± 4
kV
ParameterSleeve Bushing Ball Bearing
Max. Acceleration 250000 rad/sec² 250000 rad/sec²
Max. Shaft Speed 100 rpm 10000 rpm
Max. Shaft Torque 0.5 ±0.2 in-oz
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 = (19.3/Fr)³ *
Where L10 = bearing life in millions of revs, and
Fr = radial shaft loading in pounds
Weight 0.70 oz. 0.70 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.

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 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 or EM2 product pages.
ParameterMin.Typ.Max.UnitsConditions
Supply Voltage 4.5  5.0 5.5 V  
Supply Current   27 33 mA CPR < 500, no load 
  54 62 mA CPR ≥ 500 and < 2000, no load
  72 85 mA CPR ≥ 2000, no load
Low-level Output     0.5 V IOL = 8mA max., CPR < 2000
    0.5 V IOL = 5mA max., CPR ≥ 2000
  0.25   V no load, CPR ≥ 2000
High-level Output 2.0     V IOH = -8mA max. and CPR < 2000
2.0     V IOH = -5mA max. and CPR ≥ 2000
  4.8   V no load and CPR < 2000
  3.5   V no load and CPR ≥ 2000
Output Current Per Channel -8   8 mA CPR < 2000
-5   5 mA CPR ≥ 2000
Output Rise Time   110   nS CPR < 2000
  50   nS CPR ≥ 2000, ± 5mA load
Output Fall Time   100   nS CPR < 2000
  50   nS CPR ≥ 2000, ± 5mA load
ParameterDimension
1 Ground
2 Index
3 A channel
4 +5VDC power
5 B channel

Note: 5-pin single ended mating connector is CON-C5 or CON-LC5

Title Date Description Download
Laser Marking - PCN 5253 6/17/2015 As part of our ongoing continuous improvement efforts, US Digital is changing the labeling/marking method for our E3, E6, H3, H6, S1, S2 and S6 products. Download
EM1 & EM2 Update - PCN 4199 1/14/2014 Based on our continuous process improvement program, US Digital is changing the current marking method for our EM1 and EM2 encoder modules to a serialization method. This change will allow for each module to have a unique code; the current marking method is based on a date code system that includes all encoder modules produced within a specific week / year. The serialization system will be based on a hexadecimal system. Download
EOL Sealed Housing Option - PCN 1021 4/11/2013 This PCN is a formal notification that US Digital is discontinuing the Sealed Housing option for the following products:
  • A2 Absolute Optical Encoder
  • A2T Absolute Optical Inclinometer
  • H1 Ball Bearing Optical Shaft Encoder
  • H3 Ball Bearing Optical Shaft Encoder
  • S1 Optical Shaft Encoder
  • S2 Optical Kit Encoder
The Sealed Housing option provides the encoder with low level capability of surviving in moisture environments, however the encoder is NOT water proof or intended to be used in applications where this is required.
Download
EM1 LED Die - PCN 1016 2/7/2013 As part of US Digital's continual assurance of supply strategy, we have qualified additional sources for our LED die used in our EM1 encoder module, which in turn impacts all of the following products:

EM1, E2, E3, E5, E6, H1, H15, H3, H5, H6, HB5M, HB6M, HD25, PE, S1, S2, S5, S6, T5 and T6

The device specification will remain the same, i.e. there will be no change to form, fit or function of the product(s) as specified by US Digital. The appropriate quality and reliability testing has been performed on representative products to ensure normal parametric distribution, consistent with US Digital's quality and reliability standards.
Download

Product Description

Restriction of Hazardous Substances

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 a 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 10 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.

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

Related Products & Accessories

Product Configuration

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1. CPR
2. Shaft


3. Index


4. Torque



5. Housing


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Quantity Unit Price
1 $87.50
5 $64.85
10 $55.87
50 $49.37
Over 50 Call for Quote
Quantity
Unit Price

$87.50

Subtotal

$87.50


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)