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HS20 Incremental Optical Encoder
Dimensions
R2 Tether Arm
1.00
1.00
1.00
1.00
1.00
1.00
0.02
0.02
X .25 DP. MIN
.25 DP. MIN
HS20 Diagram
XEQL SP ON
EQL SP ON
3X #4-40 UNC-2B
3X #4-40 UNC-2B
0.02
0.02
0.60
0.60
3X #4-40 UNC-2B
A Ø1.50 BC
A Ø1.50 BC
Ø(BORE +0.0005)
X .25 3X #4-40 UNC-2B
DP. MIN
Ø(BORE +0.0005)
EQL SPX .25 DP. MIN
ON
+0.001/-0.000 THRU
+0.001/-0.000 THRU
A Ø1.50EQL SP ON
BC
A Ø1.50 BC
Ø(BORE +0.0005)
Ø(BORE +0.0005)
+0.001/-0.000 THRU
+0.001/-0.000 THRU
(2) #6 SET SCREW
(2) #6 SET SCREW
(2) #6 SET SCREW
(2) #6 SET SCREW
3.56±0.03
3.56±0.03
0.60
0.60
1.00
1.00
2.05±0.03
2.05±0.03
3.56±0.03
3.56±0.03
1.37
1.37
ØØ 2.00
2.00
1.67 MAX
1.67 MAX
0.33
0.33
2.05±0.03
2.05±0.03
Ø 2.00
Ø 2.00
Ø 1.13
2.05±0.03
2.05±0.03
M12X1 CONN.
M12X1 CONN.
1.67 MAX
1.67 MAX
1.37
1.37
M12X1 CONN.
M12X1 CONN.
HS20 Outline
HS20 Outline
0.33
POSITION VARIES
POSITION VARIES
2.05±0.03
2.05±0.03
0.33
NOTE: CONN. KEY
NOTE: CONN. KEY
ØØ 2.00
2.00
NOTE: CONN. KEY
NOTE: CONN. KEY
POSITION VARIES
POSITION VARIES
Ø 2.00
Tables and figures
Ø 2.00
R2 Tether Arm
R2 Tether Arm
notes
HS20 Outline
HS20 Outline
Pin (K8)
1
4
6
2
7
N/C
3
5
8
R2 Tether Arm
Table 1–Output Termination Pinouts
R2 Tether Arm
WirE
YEL
BLU
ORN
RED
BLK
GRN
W/YEL
W/BLU
W/ORN
funCTion
A
B
Z
+V (SUPPLY)
OV (CIRCUIT COMMON)
CASE GROUND
A
B
Z
Table 2–HS20 Disc Resolutions
2 3 5 6 8 10 11 12 24 25 30 32 40 50 60 64
70 75 80 100 105 115 120 125 150 192 200
240 250 256 300 336 400 410 500 512 600
720 785 1000 1024
figure 1
1 CYCLE
90 Deg.
A
B
Output Waveform
HI
LO
Z
A
B
1.
The typical hollow shaft product is supported by, and clamped to, the driving shaft. A flexible tether is used to keep the
housing from rotating.
2.The
shaft seal is recommended in virtually all installations. The most common exceptions are applications requir-
ing a very low starting torque or those requiring operation at both high temperature and high speed.
3.
Non-standard index widths and multiple indices are available by special order. Consult factory.
4.
Complementary outputs are recommended for use with line driver type (source/sink) outputs. When used with dif-
ferential receivers, this combination provides a high degree of noise immunity.
5. output iC’s:
Output IC’s are available as either Line Driver (LD) or NPN Open Collector (OC) types. Open
Collectors require pull-up resistors, resulting in higher output source impedance (sink impedance is similar to that
of line drivers). In general, use of a Line Driver style output is recommended. Line Drivers source or sink current
and their lower impedance mean better noise immunity and faster switching times.
Warning:
Do not connect any
line driver outputs directly to circuit common/OV, which may damage the driver. Unused outputs should be isolated
and left floating. Our applications specialists would be pleased to discuss your system requirements and the com-
patibility of your receiving electronics with Line Driver type outputs.
28V/V:
Multi-voltage Line Driver (7272*): 100 mA source/sink. Input voltage 5 to 28 VDC +/- 5% standard (Note:
V
out
= V
in
). This driver is TTL compatible when used with 5 volt supply. Supply lines are protected against overvolt-
age to 60 volts and reverse voltage. Outputs are short circuit protected for one minute. Supply current is 120 mA
typical (plus load current). This is the recommended replacement for 3904R and 7406R open collector outputs with
internal pullup resistors. It is also a direct replacement for any 4469, 88C30, 8830 or 26LS31 line driver
28V/5:
Multi-voltage Line Driver (7272*): 100 mA source/sink. Input voltage 5 to 28 VDC +/- 5% standard,
internally regulated with 5V (TTL compatible) logic out. Supply lines are protected against overvoltage to 60 volts
and reverse voltage. Outputs are short circuit protected for one minute. Supply current is 90 mA typical (plus load
current).
15V/V:
Multi-voltage Line Driver (4469*): 100 mA source/sink. Input voltage 5 to 15 VDC +/- 5% standard (Note:
V
out
= V
in
). TTL compatible when used with 5 volt supply. Supply lines are protected against overvoltage to 60
volts and reverse voltage. Outputs are short circuit protected for one minute. Supply current is 90 mA typical (plus
load current). This is a direct replacement for the 4469 Line Driver.
28V/oC:
NPN Open Collector (3904*, 7273*). Current sink of 80 mA max. Current sourced by external pull- up
resistor. Output can be pulled up to voltage other than supply voltage (30 V max). Input voltage 5 to 28 VDC
+
/- 5%
standard. Supply current is 120 mA typical. This replaces prior IC’s with designations of 3904, 7406, 3302, 681
and 689.
5V/oCr, 15V/oCr, 24V/oCr:
Open Collector (3904R*, 7406R*, 7273R*): Current sink of 70 mA max.
Includes internal pull-ups sized at approximately 100 ohms/volt. Max current source is 10 mA. Supply current is
100 mA typical, 120 mA with internal pull-ups. The 5V/OCR, 15V/OCR and 24V/OCR are often replaced by the
28V/V in system upgrades.
3904, 3904r, 4469, 5V/V, 5V/oC, 5V/oCr, 9V/oC:
Intrinsically safe line driver and open collector outputs.
These drivers are specific to intrinsically safe encoders, and are installed per the appropriate control drawings
listed in Table 2.1 on page 48 of the 2008 BEI Spec Guide.
6.
Special –S at the end of the model number is used to define a variety of non-standard features such as special
shaft lengths, voltage options, or special testing. Please consult the factory to discuss your special requirements.
7.
Higher frequency response may be available. Please consult with the factory.
8.
Extended temperature ratings are available in the following ranges:
-40 to 70°C, -40 to 85°C, –20 to 105°C and –40 to 105°C depending on the particular model. Some models can
operate down to
-55°C. Extended temperature ranges can affect other performance factors. Consult with factory for more
specific information.
9.
Mating plug receptacles and mating cable assemblies may be ordered from the factory.
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