Specifications – Rockwell Automation 847H-F 2.5-inch Diameter Solid Shaft Incremental Encoders with Bell Housing and User Manual

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Specifications

Electrical

Code format

Incremental, 2 channels with zero
index

Signal options, clockwise
rotation viewed from shaft end

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

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

Resolution

1…65536 pulses/revolution

Load current

30 mA for all output types

Output drivers

4.5…5.5V line driver - IC HD2
8…30V line driver - IC HD2
Open collector - 7406

Electrical protection

Reverse polarity and short circuit for
all output types

Cable outer diameter

0.25 in (6.2 mm)

Cable type

300V, 105º C, 26 AWG, 9-conductor
with overall braided shield, UL AWM
type 20327 for use in fixed (non-
flexing) installations; RoHs compliant

Cable bend radius

Minimum 5x outer diameter

Mechanical [mm (in.)]

Maximum operating speed

9,000 RPM

Angular acceleration

500,000 radians/s²

Moment of inertia

41 g•cm²

Startup torque at 20° C (68° F)

0.8 N•cm

Operating torque at 20° C (68° F) 0.6 N•cm

Approximate weight [kg (lb)]

0.40 (0.86 lb) with M12 connector

MTTFd (EN ISO 13849-1)

330 years

Angular shaft misalignment
[mm (in.)]

5° standard coupler,
10° high performance coupler

Parallel shaft misalignment
[mm (in.)]

0.25 (0.010) standard coupler,
0.51 (0.020) high performance coupler

Coupling axial compliance
[mm (in.)]

± 0.76 (0.030) standard coupler,
± 1.52 (0.060) high performance
coupler

Coupler bore size

9.52 (3/8) or 6.4 (1/4) diameter

Environmental

Enclosure rating per IEC 60529

Shaft: IP 65
Housing, connector version with
mating connector installed: IP67
Housing, cable version:: IP67

Temperature

-30…80° C (-22...176° F) operating
-40…100° C (-40...212° F) storage

Relative humidity

90% non-condensing

Shock

100 G/11 ms duration

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.

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