Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com

Optical and Mechanical

Encoders

Mechanical Encoders

SERIES 20

Concentric Shafts

FEATURES

•Compactmechanicalencoderwithconcentricshafts

•OutputCodeChoices

Electrical Ratings

Switching Loads:

150mA,115Vac

200mA,28Vdc

Life Expectancy:

25,000cyclesatratedloads

Contact Resistance:300mohmsmax.

(lessthan100mohmsinitially)

Insulation Resistance:1000Mohmsmin.

(10,000Mohmsinitially)

Terminal Pins:Phosphorbronzewithtinover

nickelplating

Panel Seal: Buna-Nrubber,adhesivecoated

Lockwasher:Springsteelwithzincplating

Hex Nut:Brasswithtin/zincplating

Mechanical Ratings

Stop Strength:5in-lbs.

Rotational Torque:

5in-ozoutershaft

3.5in-ozinnershaft

Pin Dimensions:.018inchsquare

Series 20:MechanicalEncoder,concentricshafts

Seal: S=Sealed;A=NotSealed

Output code

Angle of throw (outershaft)

Stop arrangement: AC=allpositionscontinuousrotation;

AF=allpositionswithxedstopbetweenrstandlast;

02to15:numberofpositions,iflessthanmaximum

Termination: P=Pins;02to25=CableLength

Stop arrangement(seeabove)

Output Code:

G=Gray

B=Binary

Q=Quadrature