Rockwell Automation 845D Absolute Encoder, Size 25 - Manual

1
Installation Instructions
Size 25 Absolute Encoder, Bulletin 845D
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Specifications
Electrical
Code Format Binary Coded Decimal (BCD)
Gray Code
Natural Binary
Resolution (Gray and Natural Binary):
256 CPR (8 bit); 512 CPR (9 bit)
1024 CPR (10 bit)
(BCD):
360 CPR (10 bit); 1000CPR (12 bit)
Accuracy ±1 bit
Frequency Response 16K words/sec
Power Requirements Determined by catalog number:
5V DC ±5% @ 400mA maximum
8-24V DC @ 400mA maximum
Output Drive Capability NPN current sink = 16mA
Output Logic Parallel BCD, GRAY, or NAT BIN:
Logic 0" = 0.0 to 0.6V DC
Logic 1" = 3.5 to 5.0V DC (TTL)
Logic 1" = 24V DC maximum
(Open collector)
Latch Command Optional with BCD and NAT BIN only:
Logic 0" = outputs active
(DC common)
Logic 1" = outputs latched
(+DC or open)
Direction Control Field selectable for increasing counts (CW or CCW)
Reset Reset position value to zero (see Reset Pin section on
page 2). Only with shaft stationary.
Mechanical
Starting and Running
Torque
2.5 Ncm typical [3.5inĆoz]
Shaft Loading Axial 89N [20lbs]; Radial 178N [40lbs]
Shaft Size 6mm, 10mm, 1/4in, 3/8in diameter
Moment of Inertia 54g-cm 2 (0.3ozĆin 2 )
Slew Speed 5000 RPM
Environmental
Housing NEMA Type 4, IP66 (IEC 529); NEMA Type 4X on
selected models
Temperature 0°C to +85°C (+32°F to +185°F )Ċoperating
-25°C to +90°C (-13°F to +194°F)Ċstorage
Humidity 98%, noncondensing
Shock 50g (11ms duration)
Vibration 20g (58 to 150Hz)
Approximate Ship
Weight
0.91kg (2lbs)
Accessories
Description Catalog Number
High Performance Flexible Coupling 845-FC-*-*
Measuring Wheels 845-MW-A-*
Servo Clamps 845-SC
PreĆWired Cables 845-CA-D-*
Mating Connectors 845-SCD
Selection
845D — S J D Z 1 4 B D CK 4
a b c d e f g h i
Mounting Configuration
Code Description
b
E 70mm Diameter Flange
Square Flange D
c
G Metric Servo 48mm B.C.
90mm Diameter Flange F
J Metric Servo 42mm B.C.
English Servo H
Shaft Options
Code Description
B 10mm Diameter
6mm Diameter A
Z 3/8in Diameter
1/4in Diameter C
L 10mm w/Flat
6mm w/Flat K
M 1/4in w/Flat
3/8in w/Flat
N
g
Output Code Type
Code Description
G Gray Code
Binary Coded Decimal D
Natural Binary N
f
Latch Options
Code Description
B
Latch (Sink Output
Module Compatible)
No Latch A
d
Power Supply Options
Code Description
2 8-24V DC Unregulated
5V DC ±5% 1
e
Output Configuration
Code Description
5
NPN Open Collector
24V DC Max.
5V DC TTL Compatible 4
h
Resolution
Code Description
DW
Gray Code
or
Natural Binary
CW
CK
FW
CN
i
Connector Options
Code Description
2
Axial Connector
(End) without Mate
1
5
4
512
256
360
1024
1000
Binary Coded
Decimal
Radial Connector
(Side) without Mate
Axial Connector
(End) with Mate
Radial Connector
(Side) with Mate
NEMA Rating
Code Description
a
X NEMA 4X
NEMA 4 J
ATTENTION: The shielded cables, output devices,
and power supplies must be properly grounded. All
National Electric Code and applicable local codes
and ordinances must be observed when wiring the
system.