Rockwell Automation 844D Optical Incremental Encoder - Manual

Installation Instructions
Bulletin 844D Blind & ThroughĆShaft Optical Incremental Encoders
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Specifications
Electrical
Code Format 2 channels with zero index
Power Requirements 120mA (no load)
Max Output Frequency 200kHz PushĆPull (120-8192 PPR)
300kHz all other drivers (120-8192 PPR)
600kHz (above 8192 PPR)
Resolution Up to 16,384 pulses per revolution
Output Driver Capability 3487 Line driver = "40 mA
4469 Line driver = "200 mA
7272 Line driver = "40 mA
PushĆPull Single Ended Driver = "70 mA
Mechanical
Angular Acceleration 100,000 radians/sec 2
Starting Torque
@ 25_C (77_F)
9.3Ncm (13inĆoz)
Running Torque
@ 25_C (77_F)
5Ncm (7 inĆoz)
Moment of Inertia 490gcm 2 (6.9 x x 10 -3 oz-in-sec 2 )
Slew Speed 3000 rpm maximum
Shaft Loading
(120-2500 PPR)
Axial 67N (15lbs)
Radial 133N (30lbs)
Shaft Loading
(4096-16,384 PPR)
Axial 44N (10lbs)
Radial 67N (15lbs)
Permissible Shaft
Radial Movement
Static +/- 0.5mm (0.02in)
Dynamic +/- 0.1mm (0.004in)
Permissible Shaft
Axial Movement
Static +/- 0.5mm (0.02in)
Dynamic +/- 0.5mm (0.02in)
Bore Size Supports 1/2 to 1-1/8" & 30mm shafts
Environmental
Protection NEMA Type 4, 13, IP66 (IEC 529) except
terminal block connection type rated
IP40 (IEC 529) only
Housing Material Aluminum
Temperature -20_C to 85_C (-4_F to +185_F)ĊOperating
-30_C to 85_C (-22_F to +185_F)ĊStorage
Humidity 90% noncondensing
Shock 50g for 11ms
Vibration 20g from 5 to 2000Hz
Approximate Weight 0.91kg (2lbs)
Selection
844D — A 5 A C 1 CR
a b c d e f
a b
Shaft Design Shaft Size
Ê
Code Description Code Description
A BlindĆShaft 4 1/2in
B ThroughĆShaft 5 5/8in
6 3/4in
c 7 7/8in
Mounting Configuration 8 1.0in
Code Description 9 1 1/8in
Tether 1/2I bolt on a
M 30mm
A
Tether, 1/2I bolt on a
7.25I dia. B.C. (to fit 8 A 7.25 dia. B.C. (to fit 8
1/2I NEMA C face)
d
Tether 3/8I bolt on a
Connection Type
B
Tether, 3/8I bolt on a
5.88I dia. B.C. (to fit 4
1/2I NEMA C f )
Code Description (
1/2I NEMA C face)
C 10Ćpin Connector
C
Tether, 3/8I bolt on a
T Terminal Block Ë
C
Tether, 3/8 bolt on a
2.5-4.0I dia. radius 1 1m (3.28ft) cable
D AntiĆrotation pin
e f
Power Supply and Output Ì Resolution
Code Description Code Description (PPR)
1
5V DC in, 5V DC DB 120
1
5V DC in, 5V DC
DLD out (3487) CK 360
2
5-26V DC in, 5-26V FW 1024
2
5-26V DC in, 5-26V
DC DLD out (7272) Í CS 2048
3
5-15V DC in, 5-15V CR 2500
3
5-15V DC in, 5-15V
DC DLD out (4469) DS 4096
4
8-26V DC in,
DR 5000
4
8-26V DC in,
5V DC DLD out (3487) FS 8192
5
10-30V DC in, 10-30V
CV 10000 Î
5
10-30V DC in, 10-30V
DC PushĆPull out LS 16384 О
К Shaft sizes below 1.0in include an insulating insert.
Ë Terminal block unit is not rated for fluid ingress protection (IP40 (IEC 529)
only).
Ì DLD = Differential Line Driver
Í 7272 line driver has a voltage drop of 1.9V.
Î Available with power supply and output options 1, 2, 3 and 4.