Anti-Jitter Option

CE Marking

Centimeters per Pulse

Custom Models

ESD Protection

Hollow Shaft Options

Output Circuits

Output Types

Programmable Encoder Programs

Pulses per Revolution

Shaft Options

Short Circuit Protection

Supply Voltages

Surge Protection

Single - a single square wave output (A) with the specified pulses per revolution regardless of which direction the shaft is rotating (also called unidirectional output).

Quadrature - a 90º displacement between two similar edges of two phased outputs generated by a common input. In other words, two square wave outputs (A and B) having the same number of pulses per revolution are in quadrature relation to each other if A leads B by 90° for clockwise rotation and B leads A by 90º for counter-clockwise rotation. The pulse outputs indicate amount of shaft rotation, and the A / B phase difference indicates direction of rotation. This output type is compatible with any control device that accepts quadrature inputs.

Zero Marker -  combined with either the Single or Quadrature outputs, output Z provides a zero reference or index pulse occurring once per revolution and having a pulse width, when the output is high, approximately equal to a single pulse on output A. An inverted zero reference (NZ) is also available that has a low value once per revolution and approximately equal to a single pulse on output A.

To align the zero marker with the flat on the shaft, see the M133 Datasheet (21k)

Direction Indicator - a digital output that indicates the direction of rotation: the output is high when rotating in one direction and low when rotating in the other direction. See the M189 Datasheet (23k)

Minimum Speed Indicator - a digital output that turns "on" when the encoder shaft exceeds a predetermined revolution per minute (RPM), and turns "off" when the RPM is less than the predetermined RPM value.
See the M140 Datasheet (40k)

Dual - two independent square wave outputs (A and B), and the pulses per revolution on A can be different than the pulses per revolution on B. A can be a value from 1 through 1200 and B can be from 1 through 360.

Triple - three independent square wave outputs (A, B and C) each having from 1 to 360 pulses per revolution.

Push/Pull - A general purpose circuit capable of either sourcing or sinking up to 50ma of current per output, and is compatible with most motion control equipment.

Current Sinking - An NPN transistor with a pull-up resistor and capable of sinking 50ma of current per output. This type of encoder output is used with a PLC or other control device that sources current. Current flows out of the PLC to the encoder, which uses the NPN transistor to represent binary logic by optionally switching the current source to ground.

Current Sourcing - A PNP transistor with a pull-down resistor and capable of sourcing 50ma of current per output. This type encoder output is used with a PLC or other control device that sinks current. The encoder uses the PNP transistor to represent binary logic by optionally switching current through the output to the PLC.

Open Collector - An NPN transistor without a pull-up resistor and capable of sinking 50ma of current per output. An external pull-up resistor must be used. This output type is typically used when the encoder and the device receiving the encoder's output pulses are operating at different supply voltages. Caution: the output must not be pulled-up more than 30 vdc, and both supplies must reference the same common.

Differential Line Driver (RS422) - An RS422 differential line driver (MC3487 or compatible device) that generates complimentary outputs: A / -A, B / -B, and Z / -Z as needed. The encoder must be operated at 5 vdc or be equipped with an internal regulator (see supply voltages: 5R or 8-30).

4469 Line Driver - capable of driving highly capacitive, inductive, or resistive loads with the ability to source or sink up to 200ma current per output. The high output voltage will nominally be the same as the supply voltage. If the supply voltage exceeds 18 vdc then the encoder must be equipped with an internal regulator (see supply voltages: 5R, 12R, 15R, or 8-30). In this case the high output voltage will be 5, 12, or 15 vdc depending on the supply voltage option. See also the M119 Datasheet (29k)

7272 - a general purpose output able to operate at 5vdc or 8-30vdc, capable of sourcing or sinking 50ma, and able to produce single ended (A, B, Z) or complimentary (+A/-A, +B,-B, +Z/-Z) outputs. The maximum output voltage level is approximately equal to the supply voltage. The outputs are reverse voltage, over voltage, and short circuit protected for one minute.

7273 Open Collector - An improved open collector output that includes reverse voltage, over voltage, and short circuit protection. Capable of sinking 50ma of current per output. An external pull-up resistor must be used. This output type is typically used when the encoder and the device receiving the encoder's output pulses are operating at different supply voltages. Caution: the output must not be pulled-up more than 30 vdc, and both supplies must reference the same common.

SN74265 Line Driver - Must be operated at 5 vdc. The encoder must be operated at 5 vdc or be equipped with an internal regulator (see supply voltages: 5R or 8-30). See also the M181 Datasheet (22k)

Triac - an optically isolated triac capable of directly driving most 120 vac loads up to 2 amps (rms) without the use of any external components. It includes a zero crossing detector that switches the triac on and off synchronously at near zero volts. The triac output can be directly interfaced to AC inputs on most PLCs and other motion controllers. Only available with 120 vac supply voltage.  (120ACT Datasheet (54k)).

1/4" (.2490" to .2495")

5/16" (.3115" to .3120")

1/2" (.4990" to .4995")

8mm (7.963mm to 7.988mm)

10mm (9.970mm to 9.995mm)

12mm (11.976mm to 12.002mm)

5/8" (.6240" to .6245")

3/8"

1/2"

5/8"

10mm

12mm

16mm

1/4"

5/16"

3/8"

10mm

1/4"

3/8"

1/2"

5/8"

3/4"

7/8"

1"

19mm

25mm