Manual

ManualsBrandsRockwell Automation ManualsEquipment847A_B Hollow Shaft Incremental Encoders

Code Output Configuration

Signal Phasing A-leads-B

clockwise rotation viewed from shaft end, Z gated A

4.5…5.5V line driver outputs (TTL)

4.5…5.5V open collector outputs 

8…30V line driver outputs (HTL) 

8…30V open collector outputs 

Signal Phasing B-leads-A

clockwise rotation viewed from shaft end, Z gated BN

4.5…5.5V line driver outputs (TTL)

4.5…5.5V open collector outputs 

8…30V line driver outputs (HTL) 

8…30V open collector outputs 



Options 5 and B cannot be ordered with option 2 from Table d.



Options 6, 7, C, and D cannot be ordered with option 1 from Table d.

Code Connector/Cable Exit

Radial exit

Code Connector/Cable Type

M12 connector, 8-pin with mating connector

M12 connector, 8-pin

1.5 m (4.9 ft) cable

5 m (16.4 ft) cable

10 m (32.8 ft) cable

Code Resolution

00001...

65536

00001...65536 pulses/revolution

Installation Instructions

847A and 847B Hollow Shaft Incremental Encoders

IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.

Selection Guide

Code Encoder Diameter/Type

A 2 in. diameter, blind hollow shaft

B 2 in. diameter, through hollow shaft

Code Mounting Configuration

3-point mounting

2-point mounting

Code Shaft Size

3 3/8 in. diameter metal hollow shaft

4 1/2 in. diameter metal hollow shaft

Code Power Supply

14.5…5.5V DC

28…30V DC

847

65536

31 4 R B

dfgh

Accessories

Description Part Number

Differential encoder buffer board 845-BB*

M12 cable 889D-F8FB-*

* See Sensor Catalog for selection

Summary of content (4 pages)

PAGE 1
Installation Instructions 847A and 847B Hollow Shaft Incremental Encoders IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE. Selection Guide 847 A a - Qb e 31 4 cd e - R B 65536 f g h a Code Encoder Diameter/Type A 2 in. diameter, blind hollow shaft B 2 in. diameter, through hollow shaft b Code Mounting Configuration Code Output Configuration Signal Phasing A-leads-B clockwise rotation viewed from shaft end, Z gated A 4 4.5…5.5V line driver outputs (TTL) 5 4.5…5.
PAGE 2
Specifications Environmental Electrical Code format Enclosure rating per IEC 60529 Shaft: IP 65 Housing, connector version with mating connector installed: with blind hollow shaft: IP67 with through hollow shaft: IP65 Housing, cable version: with blind hollow shaft: IP67 with through hollow shaft: IP65 Temperature -30…80 °C (-22...176 °F) operating -40…100 °C (-40...
PAGE 3
8. Make the electrical connections according to the Connector Pins and Signal Availability table. IMPORTANT Wiring must be in accordance with the National Electric Code and applicable local codes and regulations. Output Waveforms Complementary signals AN, BN, and ZN are supplied only on units with line driver outputs.
PAGE 4
Dimensions [mm (in.)] 2-Point Mounting 847A: 31.5 (1.24) 847B: 29.5 (1.16) 847A: 40.5 (1.59) 847B: 38.5 (1.52) 67.5 (2.66) 847A: 31.5 (1.24) 847B: 29.5 (1.16) 49.73 (1.96) 50.8 (2.00) 44 (1.73) 44 (1.73) 3.2 (0.13) 1.53 (0.06) 9 (0.35) Cable options 1.5 m (4.9 ft) 5 m (16.4 ft) 9 (0.35) 10 m (32.8 ft) PER PART NUMBER 20° 10° 6.5 (0.26) A .3 60 8) 3 (2. 847A and 847B bore diameter options Bore A 3/8 9.543...9.558 (0.3757...0.3763) 1/2 12.716...12.734 (0.5006...0.5013) 50 (1.