Tri-Tronics Photocraft RH-P

RH-P Wheeled Encoder

Excel Automation is an authorized Tri-Tronics Photocraft distributor. Contact us for sales and technical support.

Features and Options:

  • User selectable counts per revolution
  • Exclusive “Anti-Jitter” circuit
  • Mounts either above or below a web, conveyor belt, or roller
  • Self-aligning
  • 12″ or 30 cm. circumference measuring wheels
  • Fully interchangeable with model RH
  • USAMade in the USA

 

 

Product Description

The RH-P encoder, also known as a Pulse Position Indicator (PPI), generates tracking pulses for web applications, and in particular for material handling sortation applications when used with barcode laser scanners or CCD vision systems. The number of counts per each revolution of the wheel is selectable by setting configuration switches. 12″ or 30cm circumference measuring wheels ride directly on the conveyor belt or web eliminating any slippage problems typicaly encountered with shaft encoders. With its double wheel construction, the encoder is self-aligning when allowed to pivot freely from its integral arm. The encoder’s weight is sufficient to maintain contact when mounted above the moving material.  For mounting below the belt use MB-UB1 underbelt mounting accessory.

The encoder generates up to 3 square wave outputs depending on factory installed program and options.  DIP switch positons set at installation time configure the encoder according to the facotry installed program.  See “Currently Available Programs”

The types of outputs based on shaft rotation are as follows:

Pulse Output: A Single output (A) with a specific number of counts per revolution (cpr) of the shaft; Dual outputs (A and B) with two independent outputs and the cpr on A can be different than the cpr on B; or Triple outputs (A, B, and C) with three independent outputs.

Quadrature: Two pulse outputs, A and B, have the same cpr and are in quadrature relation to each other (A leads B by 90 for clockwise rotation as viewed from shaft end farthest from connector). Indicates distance and direction to any control device that accepts quadrature inputs.

Zero Marker Output: Zero reference or index pulse on output Z occurring once per revolution.

Direction Output: Indicates the direction of shaft rotation.

Minimum Speed Output: Indicates when the shaft exceeds a predetermined revolutions per minute (rpm).

Anti-Jitter feature: Designed for conveyor and web systems requiring continuous and accurate measurement of the web’s movement even if the system must be stopped and restarted without reset. When the web stops, and if there is sufficient vibration or back-and-forth movement, then the encoder output could oscillate, appearing as if the web were actually moving. Anti-jitter eliminates this condition by significantly increasing the pulse hysteresis.

Call or visit our website for details about currently available programs, and to inquire about new features to meet your specific application needs.

Industry Use

Conveyor Manufacturers Printing and Labeling Custom Machine Builders Packaging
Material Handling

Product Documentation

Additional Information
View FileDatasheet
View FileDrawings		 Supply Voltage Options
Output Circuits

Currently Available Programs

Program Description
64Q
  • Output Type: quadrature
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 1 to 64
 View FileDatasheet
144AJ
  • Output Type: single with Anti-Jitter option
  • Output Circuits: push/pull, current sinking, current sourcing, or open collector
  • Selectable Counts per Revolution: 1, 2, 3, 4, 5.236, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
 View FileDatasheet
View FileDatasheet (FR)
144AJB
  • Output Type: single with Anti-Jitter option and direction
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
  • Selectable direction polarity
 View FileDatasheet
144AJZ
  • Output Type: single with Anti-Jitter option and zero marker outputs
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
 View FileDatasheet
192 M196
  • Output Type: single with Enhanced Anti-Jitter option
  • Output Circuits: push/pull, current sinking, current sourcing, or open collector
  • Selectable Counts per Revolution: 24, 192
 View FileDatasheet
192 M237
  • Output Type: single with Unidirectional Feature (see the datasheet)
  • Output Circuits: push/pull, current sinking, current sourcing, or open collector
  • Selectable Counts per Revolution: 24, 192
 View FileDatasheet
240AJ
  • Output Type: single with Anti-Jitter option
  • Output Circuits: push/pull, current sinking, current sourcing, or open collector
  • Selectable Counts per Revolution: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 48, 60, 80, 120, 192, 240
 View FileDatasheet
View FileDatasheet (FR)
240AJB
  • Output Type: single with Anti-Jitter option and direction
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 48, 60, 80, 120, 240
  • Selectable direction polarity
 View FileDatasheet
240Q
  • Output Type: quadrature
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 1, 2, 3, 3.333*, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
    * Note: 3.333 counts per revolution results in 10 pulses per yard when used with MW-1 measuring wheels.
 View FileDatasheet
300AJQ
  • Output Type: quadrature with Enhanced Anti-Jitter option
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 60, 75, 100, 120, 150, 300
 View FileDatasheet
300M
  • Output Type: single with Anti-Jitter option
  • Output Circuits: push/pull, current sinking, current sourcing, or open collector
  • Selectable Centimeters per Pulse Measurement: .1, .5, 1, 2, 3, 4, 5, 6, 6.6, 7, 8, 9, 10, 15, 20, 25, 30, 40, 50, 75, 100
  • Note: requires use of a 30 centimeter measuring wheel (MW-30)
 View FileDatasheet
600AJB
  • Output Type: single with Anti-Jitter option and direction
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 200, 240, 300, 360, 400, 480, 600
  • Selectable direction polarity
 View FileDatasheet
600AJQ
  • Output Type: selectable single with anti-jitter option, quadrature, or dual high resolution with Enhanced Anti-Jitter option
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 12, 24, 600, or 1200 / 2400 (dual output only)
 View FileDatasheet
600AJ2
  • Output Type: dual with Anti-Jitter option and both outputs have the same pulses per revolution
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 200, 240, 300, 360, 400, 480, 600
 View FileDatasheet
1500AJB
  • Output Type: single with Anti-Jitter option and direction
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 30, 240, 300, 360, 400, 480, 600, 1500
  • Selectable direction polarity
 View FileDatasheet
1500QB
  • Output Type: Quadrature with direction output
  • Output Circuits: push/pull, or open collector (pre-configured at the factory)
  • Selectable Counts per Revolution: 0, 240, 300, 360, 400, 480, 600, 1500
  • Selectable direction polarity
 View FileDatasheet

Modified Versions

Modification Description
IW Independent wheels for curved conveyors View FileDatasheet
M126 1.8″ shaft length (each side) View FileDatasheet
M130 Encoder cable with pre-wired 4-pin connector on other end to scanner View FileDatasheet
M131 Encoder with M12 4-pin connector View FileDatasheet
M148 Specially constructed cable with 3-pin connector for high noise immunity View FileDatasheet
M197 RH encoder with 10 ft. / 3 meter permanently attached cable View FileDatasheet
M198 RH encoder with 16mm connector View FileDatasheet
M202 Encoder cable with added 4-pin M12, shielded, straight, cable plug connector View FileDatasheet
M208 RH encoder with extra holes in handle View FileDatasheet
M265 RH encoder with shortened mounting handle View FileDatasheet
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