Tri-Tronics Photocraft RL

Product Description

The Model RL rotary shaft encoder is sold with an option of several different sized diameter shafts and bearings and was designed for heavy duty applications where a rugged, face mounted encoder is required. When coupled to a rotating shaft, either directly or using a timing belt, it converts shaft rotation into square wave outputs with the specified number of counts per revolution providing an accurate means of digitizing position, rate or direction of rotation.

Output pulses are generated when a shatter-proof optical disk internally mounted on the encoder shaft and having the specified output pattern is read by 1, 2, or 3 opto-sensors depending on the number of outputs required. The matched LED and opto-sensor pairs, compensation circuitry and rugged aluminum housing assure continuous, reliable operation in industrial environments over a 0°
to 70°
C temperature range.

Resolutions from 1 to 1344 counts per revolution are available in single output, quadrature output, and with optional zero reference (index output). We also produce many customized models having 1, 2 or 3 independent outputs with any combination of counts per revolution (up to 360) on each output (call for information).

The “Anti-Jitter” option was designed for conveyor and web applications that require continuous and accurate measurement of the web’s movement even if the system must be stopped and restarted without reset. “Anti-Jitter” eliminates the effects of mechanical vibration and the possible dither that results in false output pulses and subsequent erroneous counts when the system is actually “stopped”. It also eliminates the need for more expensive quadrature encoders and up-down counters. “Anti-jitter” is available on single output models.

Accessories and customized configurations are available including speed and direction of rotation indication, measuring wheels, special shafts, mounting brackets, and flexible couplings.

Industry Use

Product Documentation	Additional Information
Datasheet Drawings	Shaft Options Output Types Counts per Revolution Options Anti-Jitter Option Supply Voltage Options Output Circuits

Modified Versions

Modification	Description
M72	3/8″ shaft diameter, 3/4″ shaft length with flat	Datasheet
M96	M4 x .7 mounting holes	Datasheet
M105	8mm shaft diameter, 20mm shaft length with flat, M4 x .7 mounting holes, 3-pin connector	Datasheet
M129	Encoder with 2 independent, single output circuits	Datasheet
M131	Encoder with M12 4-pin connector	Datasheet
M134	3/8″ shaft diameter, 1-9/16″ shaft length with 2 flats at 90 degrees	Datasheet
M139	Single output encoder with Enhanced Anti-Jitter feature	Datasheet
M141	Recessed shaft retaining ring (standard feature before September, 2000)	Datasheet
M152	8mm shaft diameter, 39mm shaft length with flat	Datasheet
M153	3-pin connector	Datasheet
M164	Encoder with LED status indicator	Datasheet
M174	3/8-16 threaded shaft	Datasheet
M191	1/4-20 threaded shaft	Datasheet
M194	6-pin connector	Datasheet