Rockwell Automation 845PY User Manual

Installation Instructions

Size 20 Digital Tachometer, Bulletin 845PY

IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.

Specifications

Electrical

Code Format Incremental, 2 channels

Quadrature 90° ±22°

Symmetry 50% ±10%

Requirements

Frequency

Response

Operating Speed (100kHz x 60)/pulses per revolution = RPM or

Resolution Up to 3000 PPR on code disk

Output Drive

Capability

Channel A leads B CCW

Power

Determined by catalog number:

5V DC ±5% @ 150mA maximum 11-20V DC @ 150mA maximum 24V DC @ 150mA maximum

210kHz

15,000 RPM, whichever is lower

Differential line driver = ±20mA

Mechanical

Starting Torque 2.5 Ncm typical (3.5inĆoz)

Running Torque 2.5 Ncm typical (3.5inĆoz)

Slew Speed 15,000 RPM

Shaft Loading Axial: 359N (80lbs)

Shaft Size 7.94mm (5/16in) diameter

Radial: 222N (50lbs)

Environmental

Housing NEMA Type 4, IP66 (IEC 529)

Temperature 0°C to +60°C (+32°F to +140°F) Ċ operating

Humidity 98%, noncondensing

Vibration 20g (5 to 2000Hz)

Approximate

Shipping Weight

-25°C to +90°C (-13°F to +194°F) Ċ storage

Shock 50g (11ms duration)

0.56kg (20oz)

Accessories

Description Part Number

PreĆWired Cables 845-CA-PY-*

Mating Connectors 845-10P, 845-10P-RT

Differential Encoder Buffer Board 845-BB

Selection

845PY — FW — 2—C

a b c

Resolution Power Supply Optiontor

Code Description Code Description

AM 5 1 5V DC ±5% BG 10 2 11-20V DC CA 50 3 24V DC ±10% CB 60

CE 64

CF 80 CG 100 Code DB 120 Blank Without Mating Connector

DF 150 C With Mating Connector

EB 180 CH 200

CJ 250 CC 254

CW 256

EG 300 CK 360

CL 400

CM 500 DW 512

EH 600 DG 720

DL 800

LG 900 CN 1000

FW 1024

EL 1200 CD 1250

RF 1280 CU 1472 EM 1500

FL 1600 CP 1800 DN 2000 CS 2048

HL 2400 CR 2500 CY 2540

LJ 2750

EN 3000

Mating Connector

Description

Differential Line Driver Output

90 +/- 22°

1 Cycle

ATTENTION: The shielded cables, output devices, and power supplies must be properly grounded. All National Electric Code and applicable local codes and ordinances must be observed when wiring the system.

Channel A

Channel B Channel B

(CCW Rotation Shown)

10-Pin Connector (ACS02E18S–1P (023))

Differential Line Driver Outputs

A Channel A Output F DC Return

B Channel B Output G No Connection

C No Connection H Channel A Output

D DC+ Input I Channel B Output

E No Connection J No Connection

Function Pin Function

Dimensions (Approximate)—mm (inches)

Radial Connector: 10ĆPin (ACS02E18-1P)

69 (2.73) Max.

Flexible Shaft Couplings

ATTENTION: Rigidly coupling the encoder shaft

to the machine shaft will cause a failure in either the bearings of the encoder or the bearings of the machine shaft.

49 (1.94)

Max

Angle

Parallel OffĆSet

4.8 (0.190)

24.6

(0.97)

7.9 (0.3125)

7.1 (0.281) Dia. Hole on a

101 (3.978) Diameter Bolt Circle,

4 PlacesĊ90° Apart

2.500

63.5 2.5) Dia.

2.498

12.7 (0.50)

+0 .0000

- 0.0005

Dia.

5PY Flange Mount

0.286

0.276

1.5 (0.06)

7.3 (0.28) Dia.

117 (4.59)

Dia.

Publication 75008–190–01(A)

November 2003

Printed in USA