Page 1
Installation Instructions
847
T
-
P
-
01204
Y14 R C
a b c edfgh
847T 2 in. Diameter Solid Shaft Incremental Encoders
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Selection Guide
a
Code Encoder Diameter/Type
T 2 in. diameter, solid shaft
b
Code Mounting Configuration
D Standard square flange
H Standard servo mount
P5 PY mounting*
*P can be ordered only with option Y from table c
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
Y 5/8 in. diameter extended shaft with flat**
**Y can be ordered only with option P from table b
f
Code Connector/Cable 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 Cable with 1.5 m (4.92 ft) length
Q Cable with 5 m (16.4 ft) length
R Cable with 10 m (32.8 ft) length
h
Code: Resolution
00001…65536 00001…65536 pulses/revolution
d
Code Power Supply
14.5…5.5V DC
28…30V DC
e
Code Output Configuration
Signal Phasing A-leads-B, Z gated A
4 4.5…5.5V line driver outputs
5 4.5…5.5V open collector outputs
6 8…30V line driver outputs
7 8…30V open collector outputs
Signal Phasing B-leads-A, Z gated BN
A 4.5…5.5V line driver outputs
B 4.5…5.5V open collector outputs
C 8…30V line driver outputs
D 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.
Accessories
Description Part Number
High-performance flexible coupling
Measuring wheels
Mounting plates
Servo clamps
Pre-wired cables 845-CA-*-*
Mating connectors 845-6P
Differential encoder buffer board 845-BB*
M12 cable 889D-F8FB-*
Not available for PY mounting
* See http://ab.rockwellautomation.com/Motion-Control/High-
Resolution-Incremental-Optical-Encoder for selection.
845-MW-A-*
845-MB-*
845-SC
845-FC-*-*
845-7P
845-7P-RT
845-10P
845-10P-RT
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
Page 2
Electrical (continued)
A
B
Z
90°
360°
Complementary signals AN, BN, and ZN are supplied only on units with line driver outputs.
Measuring step
B leads A, 180°
marker gated with BN
Clockwise rotation when facing encoder shaft
Signals and marker option - A leads B (CW rotation) Signals and marker option - B leads A (CW rotation)
Clockwise rotation when facing encoder shaft
Measuring step
A leads B, 180°
marker gated with A
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 all
Cable outer diameter 0.25 in (6.2 mm)
Cable type 300V, 105 °C, 26 AWG, 9-conductor with
Cable bend radius Minimum 5x outer diameter
Mechanical
Maximum operating speed 9000 RPM
Angular acceleration 500,000 radians/s²
Moment of inertia 15 g•cm²
Startup torque at 20 °C (68 °F) 0.8 N•cm
Operating torque at 20 °C (68 °F)
Approximate weight [kg (lb)] 0.22 (0.50) square flange mounting
8…30V line driver output: 820 kHz
Open collector: 150 kHz
8…30V line driver - IC HD2
Open collector - 7406
output types
overall braided shield, UL AWM type
20327 for use in fixed (non-flexing)
installations; RoHs compliant
0.6 N•cm
with M12 connector
0.34 (0.75) PY mounting with M12
connector
Mechanical (continued)
MTTFd (EN ISO 13849-1) 330 years
Shaft loading 80 N radial, 20 mm (0.79 in.) from front
Shaft diameter [mm (in.)] 6 (0.24), 10 (0.39), 6.4 (0.25), and
Environmental
Enclosure type rating Shaft: IP65
Temperature -30…+80 °C (-22…+176 °F) operating
Relative humidity 90% noncondensing
Shock 100 G/11 ms duration
Vibration 30 G/10…2000 Hz
EMC EN 61000-6-2 and EN 61000-6-3
Housing material EN AC-47100 die-cast aluminum
Housing finish Powder coat paint, color RAL 9005,
Flange material 6061-T6 aluminum
Shaft material SAE 303 stainless steel
Certifications RoHS compliant
bearing and 40 N axial provide L10 life
of 3.6 x10
and 80 °C ambient temperature
9.2 (0.38) diameter for solid shaft
encoders
7.94 (0.313) for encoder with PY
mounting
Housing, connector version with
mating connector installed: IP67
Housing, cable version: IP67
-40…+100 °C (-4…+212 °F) storage
(M12 connector)
Pantone black C (jet black)
CE Marked for all applicable directives,
UL listed only with cable or M12
connections
For use in NFPA 79 applications only
9
revolutions at 9,000 RPM
Output Waveforms
90°
A
2
B
Z
360°
Page 3
Connector Pins and Signal Availability
A
B
C
F
D
E
A
B
C
F
G
D
E
A
B
C
DE
F
G
H
I
J
4
3
2
1
7
6
5
8
Square Flange Mounting with
Radial M12 Connector
35.9
(1.41)
7.6
(0.30)
B
31.70 ±0.03
(1.248 ±0.001) dia.
9.0
(0.35)
16.0
(0.63)
3.1
(0.12)
19.1
(0.75)
Dia. A
Shaft Options
Nominal
Shaft dia.
, A
Flat dim., B
1/4 in.
6.327/6.312 (0.2491/0.2485)
5.5 (0.22)
3/8 in.
9.507/9.492 (0.3743/0.3737)
8.5 (0.33)
6 mm
6.000/5.988 (0.2362/0.2357)
5.5 (0.22)
10 mm
9.977/9.962 (0.3928/0.3922)
9 (0.35)
52.4
(2.06)
52.4
(2.06)
44.5
(1.75)
44.5
(1.75)
4 x dia. 4.0 (0.16) thru
50.8
(2.00) dia.
44.0
(1.73)
35.9
(1.41)
49.7
1.96
50.0
1.97
per part
number
18.0
(0.71)
46.1
(1.82)
C
Type
C
6 pin
63.9 (2.52)
7 pin
63.9 (2.52)
10 pin
69.4 (2.73)
MS Connector Options
Square Flange Mounting
with RadialCable
Square Flange Mounting with
Radial M12 Connector
Cable options
1.5 m (4.9 ft)
5 m (16.4 ft)
10 m (32.8 ft)
29.2 (1.15)
38.1
(1.50) dia.
42.0
(1.65) dia.
4X 10-32 UNF
5.6 (0.22)
3X 4-40 UNC
5.6 (0.22)
equally spaced
3X M4x0.7 - 6H
2.5 (0.10)
2.5
(0.10)
31.70 ±0.03
1.248 ±0.001 dia.
9.0 (0.35)
50.8
(2.00)
19.1 ±0.5
(0.75±0.02)
3.1 (0.12)
Servo Flange Mounting with
Radial
MS Connector
C
18.0
0.71
46.1 (1.82)
Servo Flange Mounting with
Radial M12 Connector
Shaft Options
Nominal
Shaft dia. A
Flat dim. B
1/4 in.
6.327/6.312 (0.2491/0.2485)
5.5 (0.22)
3/8 in.
9.507/9.492 (0.3743/0.3737)
8.5 (0.33)
6 mm
6.000/5.988 (0.2362/0.2357)
5.5 (0.22)
10 mm
9.977/9.962 (0.3928/0.3922)
9 (0.35)
Type
C
6 pin
63.9 (2.52)
7 pin
63.9 (2.52)
10 pin
69.4 (2.73)
MS Connector Options
Dia. A
equally spaced
B
44.0
(1.73)
50.8
(2.00) dia.
47.0
(1.85) dia.
29.2
(1.15)
5.6 (0.22)
35.9 (1.41)
Servo Flange Mounting with
Radial
Cable
35.9 (1.41)
49.7
(1.96)
50.0
(1.97)
per part
number
Cable options
1.5 m (4.9 ft)
5 m (16.4 ft)
10 m (32.8 ft)
Signal Name MS 6-pin MS 7-pin MS 10-pin M12 8-pin Cable wire colors
V DC BDD8 Red
Common AFF7Black with red band
A output EAA2White
AN output - - H 1 Black with white band
B output DBB4 Blue
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
Encoder connectors -
Recommended mating cable
Approximate Dimensions [mm (in.)]
Cat. No.
845-CA-A-* 845-CA-B-* 845-CA-C-* 889D-F8FB-* (Attached to encoder)
3
Page 4
Approximate Dimensions [mm (in.)] (continued)
PY Flange Mounting with Radial M12 Connector
Type
C
6 pin
63.9 (2.52)
7 pin
63.9 (2.52)
10 pin
69.4 (2.73)
MS Connector Options
4 x dia. 7.1 (0.28) thru
101.0
(3.98) dia.
90.0°
45.0°
116.6
(4.59) dia.
4.8
(0.19)
7.3
(0.29)
44.0
(1.73)
9.0 (0.35)
12.7
(0.50)
1.5
(0.06)
Dia. 7.938
-
0.013
0.000
0.3125
-
0.0005
0.0000
24.6
(0.97)
63.5
(2.50)
50.8
(2.00) dia.
40.7
(1.60)
C
18.0
(0.71)
50.9
2.01
49.7
(1.96)
50.0
(1.97)
per part
number
40.7
1.60
PY Flange Mounting with Radial MS Connector PY Flange Mounting with Radial Cable
Cable options
1.5 m (4.9 ft)
5 m (16.4 ft)
10 m (32.8 ft)
Rockwell Automation maintains current product environmental information on its website at
http://www.rockwellautomation.com/rockwellautomation/about-us/sustainability-ethics/product-environmental- compliance.page
.
Publication 847T-IN001B-EN-P - March 2016 10001065811 Ver 01
Supersedes Publication 847T-IN001A-EN-P - July 2014 Copyright © 2016 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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