Rockwell Automation 847H User Manual

Installation Instructions

IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.

847

H

a

-

D
b

c

e

-

01024

M1 4 R B

dfgh

847H 2.5 in. Diameter Solid Shaft Incremental Encoders

Selection Guide

a

Code Encoder Diameter/Type

H 2.5-in. diameter solid shaft

b

Code Mounting Configuration

D Standard square flange

E 70 mm diameter servo mount (64 mm bolt circle)

I 90 mm diameter servo mount (70 mm bolt circle

G 65 mm diameter servo mount (48 mm bolt circle)

HStandard servo mount

J 65 mm diameter servo mount (42 mm bolt circle)

c

Code Shaft Size

K 6 mm diameter shaft with flat

L 10 mm diameter shaft with flat

M 1/4 in. diameter shaft with flat

N 3/8 in. diameter shaft with flat

d

Code Power Supply

14.5…5.5V DC

28…30V DC

Accessories

Description Part Number

High-performance flexible coupling 845-FC-*-*
Measuring wheels 845-MW-A-*
Servo clamps 845-SC
Mounting plates 845-MB-*
Pre-wired cables 845-CA-*-*
Mating connectors 845-6P

Differential encoder buffer board 845-BB*
M12 cable 889D-F8FB-*
* See Sensor Catalog for selection

845-7P
845-7P-RT
845-10P
845-10P-RT

e

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…5.5V open collector outputs 

6 8…30V line driver outputs (HTL) 

7 8…30V open collector outputs 

Signal phasing B-leads-A
clockwise rotation viewed from shaft end, Z gated BN

A 4.5…5.5V line driver outputs (TTL)

B 4.5…5.5V open collector outputs 

C 8…30V line driver outputs (HTL) 

D 8…30V open collector outputs 

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



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



f

Code Connector/Cable Exit

AAxial exit
R Radial exit

g

Code Connector/Cable Type

A M12 connector, 8-pin with mating connector

B M12 connector, 8-pin

C MS connector, 6-pin with mating connector

D MS connector, 6-pin

E MS connector, 7-pin with mating connector

F MS connector, 7-pin

G MS connector, 10-pin with mating connector

H MS connector, 10-pin

P 1.5 m (4.9 ft) cable

Q 5 m (16.4 ft) cable

R 10 m (32.8 ft) cable

h

Code Resolution

1…65536 00001…65536 pulses/revolution

Specifications

Clockwise rotation when facing encoder shaft

Signals and marker option - A leads B (CW rotation)

Measuring step

Complementary signals AN, BN, and ZN are supplied
only on units with line driver outputs.

A

B

Z

90°

360°

Measuring step

B leads A, 180°
marker gated with BN

Signals and marker option - B leads A (CW rotation)

Clockwise rotation when facing encoder shaft

A leads B, 180°
marker gated with A

Electrical

Code format Incremental

Signal options,
clockwise rotation viewed from
shaft end

Signal phase relation 90° ± 22° channels

Symmetry 50% ± 10%

Zero index channel Gated 1/2 cycle

Supply current 50 mA

Frequency response 4.5…5.5V line driver output: 820 kHz

Resolution 1…65536 pulses/revolution

Load current 30 mA for all output types

Output drivers 4.5…5.5V line driver - IC HD2

Electrical protection Reverse polarity and short circuit for

Cable outer diameter 0.25 in (6.2 mm)

Cable type 300V, 105° C, 26 AWG, 9-conductor

Cable bend radius Minimum 5x outer diameter

2 channels with zero index

A-leads-B, 180° marker gated with A
or
B-leads-A, 180° marker gated with BN

8…30V line driver output: 820 kHz
Open collector: 150 kHz

8…30V line driver - IC HD2
Open collector - 7406

all output types

with overall braided shield, UL AWM
type 20327 for use in fixed (non­flexing) installations; RoHs compliant.

Environmental (continued)

Vibration 30 G/10…2,000 Hz
EMC EN 61000-6-2 and EN 61000-6-3

(M12 connector)
Housing material EN AC-47100 die-cast aluminium
Housing finish Powder coat paint, color RAL 9005,

Pantone black C (jet black)
Flange material 6061-T6 aluminium
Shaft material SAE 303 stainless steel
Certifications RoHS compliant

CE marked for all applicable directives

UL listing valid only for encoders with

cable and M12 connections

Output Waveforms

90°

360°

A

B

Mechanical

Maximum operating speed 9,000 RPM

Angular acceleration 500,000 radians/s²

Moment of inertia 15 g•cm²

Startup torque at 20 ºC (68 ºF) 0.8 N•cm

Operating torque at 20 ºC (68 ºF) 0.6 N•cm

Approximate weight [kg (lb)] 0.28 (0.61) with M12 connector

MTTFd (EN ISO 13849-1) 330 years

Shaft loading

Shaft diameter [mm (in.)] 6 (0.24), 10 (0.39), 6.4 (1/4), 9.5 (3/8)

Environmental

Enclosure rating per IEC 60529 Shaft: IP 65

Temperature -30…80 °C (-22...176 °F) operating

Relative humidity 90% non-condensing
Shock 100G/11ms duration

80 N radial (20 mm from front bearing)
and 40 N axial provide L10 life of

9

revolutions at 9,000 RPM and

3.6 x 10
80° C ambient temperature.

Housing, connector version with
mating connector installed: IP67
Housing, cable version: IP67

-40…100 °C (-4...212 °F) storage

Z

2

Connector Pins and Signal Availability

A

B

C

F

D

E

A

B

C

DE

F

G

H

I

J

4

3

2

1

7

6

5

8

4 x M4 x 0.7 - 6H

70.0

(2.76)

90.0 (3.54)

B

39.7(1.56)

50.0

(1.97)

9.0

(0.35)

19.1

(0.75)

63.5 (2.50)

A

3 x 8-32 UNC

4.8

(0.19)

47.63

(1.875)

A

Standard Servo Mount Encoder
with Radial M12 Connector

66.7(2.63)

52.4(2.06)

3 x 8-32 UNC

4.8 (0.19)

47.63

(1.875)

5.6 (0.22)

4 x

52.4
(2.06)

66.7
(2.63)

A

Standard Square Flange Encoder
with Radial M12 Connector

64.0

(2.52)

4 x M4 x 0.7 - 6H

70.0 (2.76)

B

39.7

(1.56)

50.0

(1.97)

9.0

(0.35)

19.1

(0.75)

63.5 (2.50)

A

90 mm Diameter Servo Mount Encoder with Radial M12 Connector

(70 mm bolt circle)

70mm Diameter Servo Mount Encoder with
Radial M12 Connector (64 mm bolt circle)

equally spaced

equally spaced

equally spaced

equally spaced

Dimensions [mm (in.)]

Shaft dimensions

Nominal dia.

Shaft A

Flat dim., B

1/4 in. 6.237/6.312 (0.2491/0.2485) 5.5 (0.22)
6 mm 6.000/5.988 (0.2362/0.2357) 5.5 (0.22)
3/8 in. 9.507/9.492 (0.3743/0.3737) 8.5 (0.33)

10 mm 9.977/9.962 (0.3928/0.3922) 9.0 (0.35)

Signal Name MS 6-pin MS 7-pin MS 10-pin M12 8-pin Cable Wire Colors

V DC BDD8Red

Common AFF7Black with red band

A output EAA2White

AN output - - H 1 Black with white band

B output DBB4Blue

BN output --I3Black with blue band

Z output CCC6Green

ZN output - - J 5 Black with green band

Zero set input -EE-Yellow

Case FGG-Black

A

Encoder

connectors/

cable view

Recommended

mating cable
part number

845-CA-A-* 845-CA-B-* 845-CA-C-* 889D-F8FB-* (Attached to encoder)

F

E

B

G

C

D

-

3

Dimensions [mm (in.)] (continued)

Encoder with Axial MS Connector

42.0

(1.65)

3 x M4 x 0.7 - 6H

5.0 (0.20)

2.5

(0.10)

63.5(2.50)

B

2.5

(0.10)

34.7(1.36)

50.0 (1.97)

31.70 ± 0.03
(1.248 ± 0.001)

9.0

(0.35)

19.1

(0.75)

58.7(2.31)

63.5 (2.50)

A

48.0

(1.89)

3 x M3 x 0.5 - 6H

5.0 (0.20)

2.5

(0.10)

B

2.5

(0.10)

34.7

(1.36)

50.0

(1.97)

31.70 ±0.03
(1.248 ±0.001)

9.0

(0.35)

19.1

(0.75)

58.7 (2.31)

63.5 (2.50)

63.5 (2.50)

A

C

21.3

(0.84)

50.0

(1.97)

55.7

(2.19)

50.0

(1.97)

Encoder with Axial M12 Connector

Encoder with Radial MS Connector

Encoder with Axial Cable

65 mm Diameter Servo Mount Encoder with
Radial M12 Connector (48 mm bolt circle)

65 mm Diameter Servo Mount Encoder with
Radial M12 Connector (42 mm bolt circle)

equally spaced

equally spaced

Dimensions with

Axial MS Connector

Typ e D

6-pin 17.8 [0.70]
7-pin 17.8 [0.70]

10-pin 23.4 [0.92]

Encoder with Radial Cable

per part no.

Dimensions with

Axial Cable or Axial Connector

Encoders C

70 and 90 mm diameter

servo mount

70.9 (2.79)

Other mounting configurations 65.9 (2.59)

Dimensions with Radial

MS Connector

Typ e E

6-pin 63.9 (2.52)
7-pin 63.9 (2.52)

10-pin 69.4 (2.73)

per

part no.

18.9

(0.75)

C

Shaft dimensions

Nominal dia.

Shaft A

Flat dim., B

1/4 in. 6.237/6.312 (0.2491/0.2485) 5.5 (0.22)
6 mm 6.000/5.988 (0.2362/0.2357) 5.5 (0.22)

3/8 9.507/9.492 (0.3743/0.3737) 8.5 (0.33)

10 mm 9.977/9.962 (0.3928/0.3922) 9.0 (0.35)

Cable

options

1.5 m (4.9 ft)
5 m (16.4 ft)

10 m (32.8 ft)

DC

E

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http//www.rockwellautomation.com/rockwellautomation/about-us/sustainability-ethics/product-environmental-compliance.page

www.rockwel lautomation.com

Power, Control and Information Solutions Headquarters

Americas: Rockwell Automation, 1201 South Second Street, Milwaukee, WI 53204-2496 USA, Tel: [phone], Fax: [phone]
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Copyright © 2014 Rockwell Automation, Inc. All rights reserved. 10001065809 Ver 00 July 2014

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847H-IN001A-EN-P

Printed in USA