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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