Rockwell Automation 844D User Manual
Installation Instructions
Teth
A
7.25 dia. B.C. (to fit 8
Teth
3/8I bolt
(
Tether, 3/8 bolt on a
5V DC in, 5V DC
5-26V DC in, 5-26V
5-15V DC in, 5-15V
,
8-26V DC in
10-30V DC in, 10-30V
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)
Resolution Up to 16,384 pulses per revolution
Output Driver Capability
Mechanical
Angular Acceleration 100,000 radians/sec
Starting Torque
@ 25_C (77_F)
Running Torque
@ 25_C (77_F)
Moment of Inertia 490gcm2 (6.9 x x 10-3oz-in-sec2)
Slew Speed 3000 rpm maximum
Shaft Loading
(120-2500 PPR)
Shaft Loading
(4096-16,384 PPR)
Permissible Shaft
Radial Movement
Permissible Shaft
Axial Movement
Bore Size Supports 1/2 to 1-1/8" & 30mm shafts
Environmental
Protection NEMA Type 4, 13, IP66 (IEC 529) except
Housing Material Aluminum
Temperature
Humidity 90% noncondensing
Vibration 20g from 5 to 2000Hz
Approximate Weight 0.91kg (2lbs)
300kHz all other drivers (120-8192 PPR)
600kHz (above 8192 PPR)
3487 Line driver = "40 mA
4469 Line driver = "200 mA
7272 Line driver = "40 mA
PushĆPull Single Ended Driver = "70 mA
9.3Ncm (13inĆoz)
5Ncm (7 inĆoz)
Axial 67N (15lbs)
Radial 133N (30lbs)
Axial 44N (10lbs)
Radial 67N (15lbs)
Static +/- 0.5mm (0.02in)
Dynamic +/- 0.1mm (0.004in)
Static +/- 0.5mm (0.02in)
Dynamic +/- 0.5mm (0.02in)
terminal block connection type rated
IP40 (IEC 529) only
-20_C to 85_C (-4_F to +185_ F)ĊOperating
-30_C to 85_C (-22_F to +185_F)ĊStorage
Shock 50g for 11ms
Selection
844D — A 5 A C 1 CR
a b c d e f
a
Shaft Design
Code Description Code Description
A BlindĆShaft 4 1/2in
B ThroughĆShaft 5 5/8in
6 3/4in
c
2
Mounting Configuration
7 7/8in
8 1.0in
Code Description 9 1 1/8in
I
er, 1/2I bolt on a
7.25I dia. B.C. (to fit 8
A
1/2I NEMA C face)
I
er,
5.88I dia. B.C. (to fit 4
B
1/2I NEMA C face)
Tether, 3/8I bolt on a
C
2.5-4.0I dia. radius
D AntiĆrotation pin
on a
M 30mm
Code Description
C 10Ćpin Connector
T
1 1m (3.28ft) cable
ef
Power Supply and Output Ì
Code Description Code Description (PPR)
5V DC in, 5V DC
1
2
3
4
5
Ê 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.
DLD out (3487)
5-26V DC in, 5-26V
DC DLD out (7272) Í
5-15V DC in, 5-15V
DC DLD out (4469)
8-26V DC in
5V DC DLD out (3487)
10-30V DC in, 10-30V
DC PushĆPull out
,
DB 120
CK 360
FW 1024
CS 2048
CR 2500
DS 4096
DR 5000
FS 8192
CV
LS
b
Shaft Size Ê
d
Connection Type
Terminal Block Ë
Resolution
10000 Î
16384 Î
Differential Line Driver Output (for resolution v 8192 PPR)
1 Cycle
90 +/- 22°
Channel A
Channel A
Logic 1
Logic 0
Differential Line Driver Output (for resolution u 8192 PPR)
1 Cycle
90 +/- 22°
Channel A
Channel A
Logic 1
Logic 0
Channel B
Channel B
(Index) Channel Z
Channel Z
(CCW Rotation Shown)
Channel B
Channel B
(Index) Channel Z
Channel Z
PushĆPull Single End Driver Output
1 Cycle
90 +/- 22°
Logic 1
Channel A
Channel B
(Index) Channel Z
Logic 0
(CCW Rotation Shown)
Electrical Connections
Table A: Differential Line Driver Outputs
Function
Channel A Output A White 1
Channel B Output B Pink 2
Channel Z Output C Violet 7
DC+ Input D Red 3
DC Return F Blue 4
Case Ground G Green Ċ
Channel A Output H Brown 5
Channel B Output I Black 6
Channel Z Output J Yellow 8
Connector
Table B: PushĆPull Outputs
10ĆPin
Function
Channel A Output A White 1
Channel B Output B Pink 2
Channel Z Output C Violet 7
DC+ Input D Red 3
DC Return F Blue 4
Case Ground G Green Ċ
Not connected Ċ Brown Ċ
Not connected Ċ Black Ċ
Not connected Ċ Yellow Ċ
Note: 10-pin connector type MS3102R18–1P
10ĆPin Connector Shielded Cable Terminal
Shielded
Cable
Terminal
(CCW Rotation Shown)
2
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