Incremental Hollow Shaft Encoder
OPE1275H Single Channel (Tachometer)
OPE2275H Dual Channel
Features:
•
O.D. = 28mm [1.10”]
•
Motor Shaft Diameter 2 mm [0.079”]
•
Motor Shaft length 3.8 mm [0.150”] minimum
•
Pulses per revolution 256 maximum
•
•
Analog Output
100 - 5,000 RPM
Description:
The
OPE1275H
and
OPE2275H
are designed for small shafted motors with a shaft diameter of 2 mm [0.079”] and
a minimum length of 3.8 mm [0.150”]. The
OPE1275H
provides a single channel analog output for speed of
rotation while the
OPE2275H
provides a dual channel analog output for speed and direction of rotation.
The output of the
OPE1275H
provides a rise and fall pulse providing the designer two slopes for each pulse
doubling the count capability. The
OPE2275H
provides quadrature rise and fall pulse patterns providing the
design engineer 4 times the pulse per revolution count.
The
OPE1275H
and
OPE2275H
are very easy to assemble on your motor shaft using a #1 Phillips screwdriver.
Power requirements are 5 volts ± .5 volts.
Electrical connection is achieved with a 4-pin Molex 53048-0410 connector providing V+, Ground and Output pins.
The mating connector is a 4-pin Molex 51021-0400 (Terminal pin 50058 or 50079)
or equivalent.
Mounting of the hollow shaft version of the
OPE1275 and OPE2275
is achieved with a stick-on transfer adhesive
pre-applied to the back of the housing. Just peel off the protective base and press the encoder to your motor.
Frequency response is from DC to 25 kHz providing a maximum of 256 cycles per revolution (CPR)
This product is designed for general encoding for low-speed applications.
Applications:
•
Printer motors
•
Machine automation
•
Machine safety
OPTEK Product Encoder
Channels:
1 = Single channel
2 = Dual Channel
Motor Diameter- 27.5mm
Ordering Information
OPE X 275 H - ZZZ
Resolution per revolution:
128 holes per revolution
256 holes per revolution
Shaft Configuration:
H = Hollow Shaft
RoHS
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Issue A .4 10/09
Page 1 of 4
OPTEK Technology Inc. —
1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Incremental Hollow Shaft Encoder
OPE1275H Single Channel (Tachometer)
OPE2275H Dual Channel
OPE1275H
OPE2275H
PIN #1
Pin Out
1
V
CC
2
CH A
3
CH B
4
GND
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Issue A.4 10/09
Page 2 of 4
OPTEK Technology Inc. —
1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Incremental Hollow Shaft Encoder
OPE1275H Single Channel (Tachometer)
OPE2275H Dual Channel
Absolute Maximum Ratings
(T
A
=25°C unless otherwise noted)
Maximum
Storage Temperature Range
Operating Temperature Range
Power Supply Voltage V
CC
Power Dissipation
(2)
Vibration (5 Hz to 2 kHz)
Shaft Axial Play
Off-Axis Mounting Tolerance
Acceleration
-40
o
C to +85
o
0
o
C to +85
o
4.5 to 5.5
250
20
± 0.51 mm [0.02”]
0.254 mm [0.01”]
250,000
rad/sec
2
Units
C
C
V
DC
mW
g
Mechanical Specifications:
Dimensions
Moment of Inertia
Shaft Length
6.48 X 10
-5
0.3 to 0.7
Units
OZ-IN-S
2
Inches
Electrical Characteristics
(T
A
= 25°C unless otherwise noted — for reference only)
SYMBOL
V
CC
I
CC
V
OH
V
OL
TR
TF
FR
H.S.
Rotation
PARAMETER
Supply Voltage
Supply Current
High Level Output Voltage
Low Level Output Voltage
Rise Time
Fall Time
Frequency Response
Hole Size
Maximum speed of rotation with 1024
holes per rotation
MIN
4.5
-
Vcc-0.5
-
-
-
-
0.10
-
TYP
5.0
21
-
-
500
100
-
-
-
MAX
5.5
27
-
0.4
-
-
60
-
100
UNITS
V
mA
V
V
ns
ns
kHz
inch
rev/sec
V
CC
= 5.0 volts
I
C
= 100 µA
I
C
= 20 mA
10% to 90%, V
CC
= 5.0 volts
10% to 90%, V
CC
= 5.0 volts
TEST CONDITIONS
Encoding Characteristics:
SE
QE
Symmetry Error
Quadrature Error—OPE2275H only
0
0
16
12
75
°e
60
Notes:
1. All parameters measured using pulse technique, Vcc = 5.0 volts and T
A
= 25°C.
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. —
1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A .4 10/09
Page 3 of 4
Incremental Hollow Shaft Encoder
OPE1275H Single Channel (Tachometer)
OPE2275H Dual Channel
Timing Diagram:
Hollow Shaft Assembly Instructions:
#2 screws
Reflective Lid
Timing Definitions:
PPR
= Pulses Per Revolution
Electrical Degree
(°e) = 1/360th of 1 cycle
Cycle
= 360 electrical degrees (°e)
Symmetry
= Relationship between X & Y in electrical
degrees (°e).
Position Error
= The difference between the actual
shaft position and the position indicated by
the encoder cycle count.
Quadrature:
The lead or lag difference between
channels “A” and “B” in electrical degrees
(normally 90°e)
Cycle Error
= The difference between the actual shaft
rotational position and the cycle count
rotational position.
Rise Time
= Time required to switch between 10% and
90% of the highest to lowest signal levels.
Fall Time
= Time required to switch between 90% and
10% of the highest to lowest signal levels.
Encoder Wheel
Assembly
Aperture Plate
Make sure the kit has all required parts:
•
1 each Base Unit
•
1 each Base Unit Alignment Tool
•
1 each Aperture Plate
•
1 each Encoder Wheel Assembly
•
1 each Wheel Assembly Alignment Tool
•
1 each Reflective Lid
•
4 each #2-56 self tapping screws
1. Peal the protective covering from the adhesive on the
back of the Base Unit.
2. To center the Base unit, carefully slide the Base Unit over
the flange on the motor and press firmly.
3. Place the Aperture Plate on the Base Unit.
4. Slide the Encoder Wheel Assembly over the motor shaft
until it almost touches the Aperture Plate.
5. Carefully place the Reflective Lid on the encoder (rotate
as necessary to align) and attach with 4 #2 self tapping
screws (provided).
6. Connect the electrical interface to the encoder.
Base Unit
Adhesive Cover
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
Issue A.4 10/09
Page 4 of 4
OPTEK Technology Inc. —
1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747
FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Altera SoC
