Bulletin 844D Blind- Through-Shaft Optical Incremental Encoders C
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Encoder
Bulletin 844D Blind- Through-Shaft Optical Incremental Encoders
Code Format channels with zero index Power Requirements 120mA load) Output Frequency 200kHz Push-Pull (1024-8192 PPR) 300kHz other drivers (1024-8192 PPR) 600kHz (above 8192 PPR) Resolution 16,384 pulses revolution Output Drivers RS422 Line driver 3487 5-15V Line driver 4469 5-26V Line driver 7272 10-30V Push-Pull
Mechanical
Angular Acceleration 100,000 radians/sec2 Starting Torque 9.3Ncm (13in-oz) 25_C (77_F)
Description
Bulletin 844D blind-shaft through-shaft incremental encoders used electronically monitor position speed rotating shaft. Shaft position converted digital pulses quad format. Zero Index Channel also included with models.
Running Torque 3Ncm in-oz) Blind-Shaft 25_C (77_F) 5Ncm in-oz) Through-Shaft Moment Inertia 490gcm2 (6.9 10-3oz-in-sec2) Slew Speed 3000 maximum Shaft Loading Axial (15lbs) (1024-2500 PPR) Radial 133N (30lbs) Shaft Loading Axial (10lbs) (4096-16,384 PPR) Radial (15lbs) Permissible Shaft Static 0.5mm (0.02in) Radial Movement Dynamic 0.1mm (0.004in) Permissible Shaft Static 0.5mm (0.02in) Axial Movement Dynamic 0.5mm (0.02in) Bore Size Supports 1-1/8" 30mm shafts
Features
Blind-shaft through-shaft front coupled models Flexible coupler required Adaptor plate required 1024 16,384 3.5I diameter housing Supports 1/2I 1-1/8I shafts Cable, connector terminal block connection options
Environmental
Protection NEMA Type IP66 (IEC 529) except terminal block connection type rated IP40 (IEC 529) only Housing Material Aluminum Temperature -20_C 85_C (-4_F +185_F)-Operating -30_C 85_C (-22_F +185_F)-Storage Humidity noncondensing Shock 11ms Vibration from 2000Hz Approximate Weight 0.91kg (2lbs)
7-17
Encoder
Bulletin 844D Blind- Through-Shaft Optical Incremental Encoders
Selection Guide
844D
Shaft Design
Code
Power Supply
Code
Mounting Configuration
Code
Description
Blind-Shaft Through-Shaft
Description
Tether, 1/2I bolt 7.25I dia. B.C. 1/2I NEMA face) Tether, 3/8I bolt 5.88I dia. B.C. 1/2I NEMA face) Tether, 3/8I bolt 2.5-4.0I dia. radius Anti-rotation
Description (PPR)
(3487) 5-26V 5-26V (7272) 5-15V 5-15V (4469) 10-30V 10-30V Push-Pull Peak-to-Peak Sin/Cos
Shaft Size
Code
Description
1/2I 5/8I 3/4I 7/8I 1.0I 1-1/8I 30mm
Connection Type
Code
Resolution
Code
Description
connector Terminal block (3.28ft) cable (16.4ft) cable (29.5ft) cable
Description (PPR)
1024 2048 2500 4096 5000 8192 10000 16384
Shaft sizes below 1.0I include insulating insert. Terminal block unit rated fluid ingress protection (IP40 (IEC 529) only). Differential Line Driver Available with power supply output options only.
Electrical Connections
Table Differential Line Driver Outputs Function
Channel Output Channel Output Channel Output Input Return Case Ground Channel Output Channel Output Channel Output
10-Pin Connector
Shielded Cable
White Pink Violet Blue Green Brown Black Yellow
Terminal
Table Push-Pull Outputs Function
Channel Output Channel Output Channel Output Input Return Case Ground connected connected connected
Note: 10-pin connector type MS3102R18-1P
10-Pin Connector
Shielded Cable
White Pink Violet Blue Green Brown Black Yellow
Terminal
7-18
Encoder
Bulletin 844D Blind- Through-Shaft Optical Incremental Encoders
844D Blind-Shaft Tolerance SIze
1/2I 5/8I 3/4I 7/8I 1.0I 1/8I 30mm
Bore
0.500/0.501 0.625/0.626 0.750/0.751 0.875/0.876 1.000/1.001 1.125/1.126 30.000/30.025mm
Mating Shaft
0.500/0.499 0.625/0.624 0.750/0.749 0.875/0.874 1.000/0.999 1.125/1.124 30.000/29.975mm
Length
0.70/2.00 0.70/2.00 0.70/2.00 0.70/2.00 0.70/2.00 0.70/2.00 18/50mm
844D Through-Shaft Tolerance Size
1/2I 5/8I 3/4I 7/8I 1.0I 1/8I 30mm
Bore
0.500/0.501 0.625/0.626 0.750/0.751 0.875/0.876 1.000/1.001 1.125/1.126 29.980/29.959mm
Mating Shaft
0.500/0.499 0.625/0.624 0.750/0.749 0.875/0.874 1.000/0.999 1.125/1.124 30.000/29.975mm
Length-min.
0.70 0.70 0.70 0.70 0.70 0.70 18mm
Dimensions-mm (inches)
Blind-Shaft Connector Option
19.05 (0.75) 12.7 (0.50) 11.43 (0.45) 6.35/6.36 (0.25) Anti-Rotation 23.11 (0.91) 65.53 (2.58) 1.0008 Bore 1.0028
Cable Option
Terminal Option
18.16 (0.71)
25.4 (1.00)
89.66 (3.53)
50.0 (1.97)
57.15 (2.25)
50.8 (2.00)
65.53 (2.58)
Clamp Ring 3.17 (0.125) 46.23 (1.82)
#10-32UNC-28 X0.25 Plcs 3.000 B.C.
Through-Shaft
Tether Option
17.02/16.94 (0.673/0.670) 19.05 (0.75) 12.7 (0.50) 11.43 (0.45) 7.14 (0.28) 12.7 (0.5) 22.4 (0.89) 107.5 (4.23) (2.0)
Tether Option
12.75/12.70 (0.502/0.500) 7.14 (0.28) 12.1 (0.48) 18.2 (0.72) (2.0)
Tether Option
13.21 (0.52) 12.78/12.73 (0.503/0.501) 25.4 (1.0) 87.5 (3.45) 38.1 (1.5)
89.66 (3.53)
57.15 50.0 (2.25) (1.97) Clamp Ring 3.17 (0.125) 46.23 (1.82) 0.76 (0.03) 87.3 (3.44) 5.59 (0.22)
38.10 (1.50)
101.6 (4.0) 0.218 Plcs
76.2 (3.0) 65.0 (2.56) 5.59 (0.22) 87.3 (3.44)
0.76 (0.03) 76.2 (3.0) 65.0 (2.56) 76.2 (3.0) 85.3 (3.36)
Shown with optional anti-rotation pin.
7-19
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