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Specifications, Output waveforms – Rockwell Automation 847H 2.5 in. Diameter Solid Shaft Incremental Encoders 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, 105° 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

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

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

3.6 x 10

9

revolutions at 9,000 RPM and

80° C ambient temperature.

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

Temperature

-30…80 °C (-22...176 °F) operating
-40…100 °C (-4...212 °F) storage

Relative humidity

90% non-condensing

Shock

100G/11ms duration

Output Waveforms

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

A

B

Z

90°

360°

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