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Installation InstructionsSize 15 Incremental Encoder, Bulletin 845PIMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.

Specifications

Electrical

Code Format Incremental, 2 channels with zero index

Quadrature 9036

Channel A leads B CCW

Symmetry 50% 10%

Zero Index Channel 1/2 cycle, gated to channel B

PowerRequirements

5V DC 5% @ 90mA maximum

FrequencyResponse

100 kHz

Operating Speed(Data)

(100 kHz x 60)/pulses per revolution = RPM or5000 RPM, whichever is lower

Resolution 500 or 1000 PPR on code disk

Output DriveCapability

Differential line driver = 20 mA

Mechanical

Starting Torque 0.9inoz typical [0.006 NDm]

Running Torque 0.15inoz typical [0.001 NDm]

Slew Speed 5000 RPM

Shaft Loading Axial 2.5 lbs [11 N]Radial 5.0 lbs [22 N]

Shaft Size 1/4in [6.4mm] diameter

Environmental

Housing NEMA Type 1

Temperature +32F to +140F (0C to +60C) operating-13F to +194F (-25C to +90C) storage

Humidity 85%, noncondensing

Shock 50 G's (11ms duration)

Vibration 20 G's (5 to 2000 Hz)

ApproximateShipping Weight

12oz (0.34 kg)

Accessories

Description Part Number

High Performance Flexible Coupling 845-FC-*-*

Servo Clamps 845-SC

Differential Encoder Buffer Board 845-BB

*See the Rockwell Automation/AllenBradley Sensorcatalog for selection.

ATTENTION: The shielded cables, output devices,and power supplies must be properly grounded. AllNational Electric Code and applicable local codesand ordinances must be observed when wiring thesystem.

Selection

845P S H C 1 4 CN 3

a

DIFFER

a

Resolution

Code Description (PPR)

500CM

1000CN

Differential Line Drive Output

90 +/- 36

Channel A

Channel A

Channel B

Channel B

Channel ZChannel Z

1 Cycle

(CCW Rotation Shown)

Cable

Differential Line Driver Output

Wire Color Function

White DC+ Input (5V DC)

Black DC Return

Red Channel A

Violet Channel A

Green Channel BBlue Channel B

Yellow Channel Z

Orange Channel Z

Shield Floating

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Flexible Shaft Couplings

Angle

ParallelOffSet

ATTENTION: Rigidly coupling the encoder shaftto the machine shaft will cause a failure in eitherthe bearings of the encoder or the bearings of themachine shaft.

Dimensions (Approximate)

Dimensions shown in inches (millimeters)

Servo Mount

0.130 (3.3)

4-40 UNC2B x 0.25 (6.4) Deepon a 1.210 (30.7) Dia. Bolt Circle,3 Places120 Apart

0.142 (3.6)

1.50 (38.1)Max.

0.622 (15.8)0.055 (1.4)

0.062 (1.6)

16 (406) Typ.

18 (457) Typ.

1.625 (41.3)Dia.

1.59 (40.4)Dia.

0.24970.2495

(6.3) Dia.+ 0.000- 0.0010.750

(19) Dia.

1.37501.3745

(34.9) Dia.

0.35(8.9)

Publication 7500806201(B)May 1999Printed in USA