Rockwell Automation 845K Incremental Encoder - Manual

Installation Instructions
Size 25 Incremental Encoder, Bulletin 845K
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Specifications
Electrical
Code Format Incremental, 2 channels with zero index
Quadrature 90° ±22°
Channel A leads B CCW
Symmetry 50% ±10%
Zero Index Channel 1/2 cycle, gated to channel B
Power
Requirements
Determined by catalog number:
5V DC ±5% @ 150mA maximum
8-24V DC @ 150mA maximum
Frequency
Response
Data: 210 kHz
Zero index: 125 kHz
Operating Speed
(Data)
(210 kHz x 60)/pulses per revolution = RPM or
6000 RPM, whichever is lower
Resolution Up to 5000 PPR on code disk
Output Drive
Capability
PNP current source = 20mA
NPN current sink = 20mA
Differential line driver = ±20mA
NPN open collector = 20mA
Mechanical
Starting Torque 1.0inĆoz typical [0.007 NDm]
Running Torque 1.0inĆoz typical [0.007 NDm]
Moment of Inertia (0.08ozĆin 2 maximum)
Slew Speed 6000 RPM
Shaft Loading Axial 20 lbs [89 N] (10 lbs 5000 PPR)
Radial 40 lbs [178 N] (20 lbs 5000 PPR)
Shaft Size 3/8in [9.517 mm] diameter
Environmental
Housing NEMA Type 1
Temperature +32°F to +140°F (0°C to +60°C) Ċ operating
-13°F to +194°F (-25°C to +90°C) Ċ storage
Humidity 85%, noncondensing
Shock 50 G's (11ms duration)
Vibration 20 G's (5 to 2000 Hz)
Approximate
Shipping Weight
2 lbs (0.91 kg)
Accessories
Description Part Number
High Performance Flexible Coupling 845-FC-*-*
Measuring Wheels 845-MW-A-*
Servo Clamps 845-SC
Differential Encoder Buffer Board 845-BB
*See C-111 catalog for selection.
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.
Selection
845K — S A H Z 1 4 CR Y 3
a b c d
Mounting Configuration
Code Description
a
H English Servo
Square Flange D
b
Power Supply
Code Description
2 8-24V DC Unregulated
5V DC ±5% 1
Output Configuration
Ê
Code Description
c
3 NPN Current Sink
PNP Current Source 2
d
Resolution
Code Description
CB 60
50 CA
5
NPN Open Collector
24V DC Max
DLD 5V DC RS-422 4
CF 80
64 CE
CG 100
EB 180
120 DB
CJ 250
200 CH
CC 254
EG 300
256 CW
CK 360
CL 400
DW 512
500 CM
LG 900
600 EH
CN 1000
EL 1200
1024 FW
CD 1250
FL 1600
DN 2000
1800 CP
HL 2400
2048 CS
CR 2500
CT 3600
2540 CY
DR 5000К
К DLD = Differential Line Driver
Ë See Shaft Loading specification
changes.
RF 1280
Flexible Shaft Couplings
Angle
Parallel
OffĆSet
ATTENTION: Rigidly coupling the encoder shaft
to the machine shaft will cause a failure in either
the bearings of the encoder or the bearings of the
machine shaft.