Tri-Tronics Company, Inc. R21-P Single Wheel Linear Measurement Encoder

Product Description The model R21 is an optical shaft encoder in a 2" diameter x 1-7/8" (Ø51mm x 48mm) housing with an integral mounting arm, compatible with a variety of mounting accessories for installation either above or below a moving web or conveyor. When used with the MW-8 (8.00" circumference) or MW-20 (20.00cm circumference) measuring wheel it can accurately track the web or conveyor to within ±.007" or ±.016cm per revolution. This is not a light duty encoder - it was built with heavy duty bearings and solid construction for reliable, long-term operation in continuous duty applications. During installation various features, such as the number of pulses per revolution, can be selected by setting configuration switches. The available features depend on the encoder model. 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 Drawings DOWNLOAD 3D STEP R21-P MW8 (not all 3D model variations available) Supply Voltage Options Output Circuits Currently Available Programs Program Description 8EAJ Output Type: single with Enhanced Anti-Jitter option Output Circuits: 7272 push/pull, 7273 open collector, or 7272 differential line driver (the output circuit is pre-configured at the factory) Selectable Output Pulses per linear movement when using MW-8 wheels: Pulses per Foot: 1, 2, 3, 4, 6 Pulses per Inch: 1, 2, 3, 4, 5, 10, 16, 20 Datasheet 20EAJ Output Type: single with Enhanced Anti-Jitter option Output Circuits: 7272 push/pull, 7273 open collector, or 7272 differential line driver (the output circuit is pre-configured at the factory) Selectable Output Pulses per linear movement when using MW-20 wheels: Millimeters per Pulse: 1, 2, 3, 4, 5, 10, 15, 20, 25, 50, 75, 100 Datasheet 64AJ Output Type: single with Anti-Jitter option Output Circuits: push/pull, open collector, or differential line driver (pre-configured at the factory) Selectable Counts per Revolution: 1 through 64 Datasheet 144AJ Output Type: single with Anti-Jitter option, and direction Output Circuits: push/pull, open collector, or differential line driver (pre-configured at the factory) Selectable Counts per Revolution: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144 Short-Circuit and ESD protection Datasheet Modified Versions Modification Description M265 R21 with shortened mounting handle Datasheet For our non-programmable single Wheel model, please see our R21 Wheel Encoder. For our dual Wheel models, please see our R22 Wheel Encoder and our RH Wheel Encoder.