OPE1275H-128 - TT Electronics [Optek Technology]

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

Incremental Hollow Shaft Encoder

OPE1275H Single Channel (Tachometer)

OPE2275H Dual Channel

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 1 of 4

Applications:

• Printer motors

• Machine automation

• Machine safety

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 de signed 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 directio n of rotation.

The output of the OPE1275H provides a rise and fall pulse providing the designer two slope s 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 Mol ex 53048-0410 co nnector providing V+, Ground and Outp ut 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. Ju st peel off the protective base and pre ss the encoder to your motor.

Frequency response is fro m DC to 25 kHz providing a maximum of 256 cycles p er revolution (CPR)

This product is designed for general encoding for low-speed ap plications.

RoHS

Ordering Information

OPE X 275 H - ZZZ

OPTEK Product Encoder Resolution per revolution:

128 holes per revolution

Channels: 256 holes per revolution

1 = Single channel

2 = Dual Channel Shaft Configuration:

H = Hollow Shaft

Motor Diameter- 27.5mm

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

Incremental Hollow Shaft Encoder

OPE1275H Single Channel (Tachometer)

OPE2275H Dual Channel

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 2 of 4

OPE1275H

OPE2275H

1 2 3 4

VCC CH A CH B GND

Pin Out

PIN #1

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

Incremental Hollow Shaft Encoder

OPE1275H Single Channel (Tachometer)

OPE2275H Dual Channel

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

Electrical Characteristics (TA = 25°C unless otherwise noted — for reference only)

SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS

VCC Supply Voltage 4.5 5.0 5.5 V

ICC Supply Current - 21 27 mA VCC = 5.0 volts

VOH High Level Output Voltage Vcc-0.5 - - V IC = 100 µA

VOL Low Level Output Voltage - - 0.4 V IC = 20 mA

TR Rise Time - 500 - ns 10% to 90%, VCC = 5.0 volts

TF Fall Time - 100 - ns 10% to 90%, VCC = 5.0 volts

FR Frequency Response - - 60 kHz

H.S. Hole Size 0.10 - - inch

Rotation Maximum speed of rotation with 1024

holes per rotation - - 100 rev/sec

Encoding Characteristics:

SE Symmetry Error 0 16 75 °e

QE Quadrature Error—OPE2275H only 0 12 60

Notes:

1. All parameters measured using pulse technique, Vcc = 5.0 volts and TA = 25°C.

Absolute Maximum Ratings (TA=25°C unless otherwi se noted)

Maximum Units

Storage Temperature Range -40o C to +85o C

Operating Temperature Range 0o C to +85o C

Power Supply Voltage VCC 4.5 to 5.5 VDC

Power Dissipation(2) 250 mW

Vibration (5 Hz to 2 kHz) 20 g

Shaft Axial Play ± 0.51 mm [0.02”]

Off-Axis Mounting Tolerance 0.254 mm [0.01”]

Acceleration 250,000 rad/sec2

Mechanical Specifications:

Dimensions Units

Moment of Inertia 6.48 X 10-5 OZ-IN-S2

Shaft Length 0.3 to 0.7 Inches

OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.

Incremental Hollow Shaft Encoder

OPE1275H Single Channel (Tachometer)

OPE2275H Dual Channel

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 4 of 4

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 el ectrical 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 1 0% and

90% of the highest to lowest signal levels.

Fall Time = Time required to switch bet ween 90% and

10% of the highest to lowest signal levels.

Timing Diagram:

Hollow Shaft Assembly Instructions:

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 enco der.

#2 screws

Reflective Lid

Encoder Wheel

Assembly

Aperture Plate

Base Unit

Adhesive Cover