Bourns Incremental rotary encoder 5 Vdc Switch postions 128 360 ° ENT1D-D28-L00100L 1 pc(s) ENT1D-D28-L00100L Data Sheet

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  Two channel quadrature output

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  Bushing or servo mount

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  Square wave signal

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  Small size

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  Resolution to 256 PPR

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  CMOS and TTL compatible

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 Long life

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  Ball bearing option for high operating 

  speed up to 3000 rpm

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  RoHS compliant*

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. 

 Specifi cations are subject to change without notice.

Customers should verify actual device performance in their specifi c applications.

Output ................................................................................... 2-bit quadrature code, Channel A leads Channel B by 90 º (electrical) with clockwise rotation
Resolution............................................................................................................................................................................... 25 to 256 cycles per revolution
Insulation Resistance (500 VDC) .................................................................................................................................................................. 1,000 megohms
Electrical Travel .....................................................................................................................................................................................................Continuous
Supply Voltage.........................................................................................................................................................................................5.0 VDC ±0.25 VDC
Supply Current.............................................................................................................................................................................................. 26 mA maximum
Output Voltage
 Low 

Output 

................................................................................................................................................................................................. 0.8 V maximum

 High 

Output..................................................................................................................................................................................................... 4 V minimum

Output Current
 Low 

Output 

................................................................................................................................................................................................ 25 mA minimum

Rise/Fall Time ..................................................................................................................................................................................................200 ns (typical)
Shaft RPM (Ball Bearing) ....................................................................................................................................................................... 3,000 rpm maximum
Power Consumption .................................................................................................................................................................................. 136 mW maximum
Pulse Width (Electrical Degrees, Each Channel) ............................................................................................................................................180 º ±45 º typ.
Pulse Width (Index Channel) ................................................................................................................................................................................. 360 º ±90 º
Phase (Electrical Degrees, Channel A to Channel B)........................................................................................................................................90 º ±45 º typ.

Operating Temperature Range .......................................................................................................................................-40 ºC to +75 ºC (-40 °F to +167 °F)
Storage Temperature Range ..........................................................................................................................................-40 °C to +85 °C (-40 °F to +185 °F)
Humidity................................................................................................................................................................. MIL-STD-202, Method 103B, Condition B
Vibration ............................................................................................................................................................................................................................ 5 G
Shock............................................................................................................................................................................................................................... 50 G
Rotational Life
  A & C Bushings (300 rpm maximum)** ............................................................................................................................................10,000,000 revolutions
  W, S & T Bushings (3,000 rpm maximum)** ..................................................................................................................................200,000,000 revolutions
IP Rating ..........................................................................................................................................................................................................................IP 40

Mechanical Angle ........................................................................................................................................................................................ 360 ° Continuous
Torque (Starting and Running)
  A & C Bushings (Spring Loaded for Optimum Feel) ..............................................................................................................1 N-cm (1.5 oz-in.) maximum
  W, S & T Bushings (Ball Bearing Shaft Support) ..............................................................................................................0.07 N-cm (0.1 oz-in.) maximum
Mounting Torque ...................................................................................................................................................1.7 to 2.0 N-cm (15 to 18 lb.-in.) maximum
Shaft End Play .................................................................................................................................................................. 0.30 mm (0.012 ”) T.I.R. maximum
Shaft Radial Play .............................................................................................................................................................. 0.12 mm (0.005 ”) T.I.R. maximum
Weight .......................................................................................................................................................................................................... 11 gms. (0.4 oz.)
Terminals ...................................................................................................................................................................... Axial or radial pc pins or ribbon cable
Soldering Condition
 Manual 

Soldering 

................................................................................................................... 96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire

   

370 °C (700 °F) max. for 3 seconds

 Wave 

Soldering 

........................................................................................................................................... 96.5Sn/3.0Ag/0.5Cu solder with no-clean fl ux

   

260 °C (500 °F) max. for 5 seconds

 Wash 

processes 

.................................................................................................................................................................................... Not recommended

Marking ................................................................................................................................. Manufacturer’s trademark, name, part number, and date code.
Hardware ................................................................. One lockwasher and one mounting nut supplied with each encoder, except on servo mount versions.
**For resolutions 

≤ 128 quadrature cycles per shaft revolution.

OUTPUT VOLTAGE

Channel A

Channel B

1 cycle

Clockwise rotation

360 ° ± 90 °

STANDARD RESOLUTIONS AVAILABLE

(Full quadrature output cycles per shaft revolution)
 25* 

125

 50* 

128

  

64 

200

 100 

256

For Non-Standard Resolutions—Consult Factory

* Channel B leads Channel A