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The Prox Encoder™

General Information
The Joral Prox Encoder provides incredibly small packaging in a non-contact Hockey Puck encoder.  The Prox Encoder is a revolutionary new rotary encoder that is non-contact to the measuring surface and compensates for mechanical misalignment. It has no shaft or bearings so the problems of drag, endplay, corrosion, side loading, and push-out have been eliminated. The user mounts a magnet on the rotating object and locates the encoder close by. Precise mounting is not required, as it will tolerate changes in distance, centering and planer tilt. This is important as the machine wears over time. Non-contact means vibration and shock from the mechanics are not transmitted directly to the electronics in the encoder. Our advanced design provides a wide range of operating voltages, temperatures, and resolutions. Built-in over-voltage, mis-wire and spike protection keep this encoder running.
A Designer Kit is available for you to experience the possibilities for yourself. Specify the Prox Encoder of your choice when you order.

 
 

16mm Smooth Barrel
Literature Sheet

18mm Threaded
Literature Sheet

30mm Threaded
Literature Sheet

Sensing Envelope
The Hockey Puck has the ability to sense the rotational position of a magnet in a variety of ways. The figures below show potential magnet placement areas (envelopes) using the center or the outside of the encoder. Of course, other positions or angles can be used. Also noteworthy is that strong external magnetic fields may adversely affect performance. Center Envelope:
The magnet is mounted to the center of the gear and the center of the Encoder is located in the front of the gear (as shown below).

    

The Prox Encoder has a sensing envelope referenced from the center

Locate the magnet within the sensing envelope

  
 
Specifications        
  Mechanical
Enclosure: 16, 18, 30mm diameter aluminum housing
Mounting: Threaded or smooth barrel
Weight  2oz
Maximum RPM: 6000 PRM		 Electrical
Supply Voltage: 6 to 30 VDC, 60mA
Output Driver: Push/Pull (OLP7272)
Protection: reverse polarity, spike, noise, open circuit, short circuit
Electrical Connections: M8, M9, M12 or Cable depending on model
LED Indicators: Power, Channel and Marker
 		 Environmental
Temperature: -25 to +70 degrees C
Humidity: 100% relative humidity
Potting Compound: Non-porus, water and chemical resistant, RoHS compliant
Shock & Vibration: Meets MIL-STD-202 Specs (information available on web site) Shock—half sine, 50g, 11ms Thermal Shock— -40 to + 125 one hour dwell Vibration—10 to 500 hz at 10g
  
 
Output

Standard Resolutions (30mm)

Output Waveform
  Consult the factory for any other resolutions. The resolution specifies the number of pulses per revolution per channel (CH A and CH B).
Decimal: 10, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500

Binary: 8, 16, 32, 64, 128, 256, 512, 1024, 2048
 
Magnets
The magnet plays an important role in the overall measurement. Joral offers magnets of many shapes and sizes, depending on the application. Typical magnets would be of the disk or ring shape in the 4 to 20mm diameter range. A small disk magnet could be mounted on the end of a shaft. A ring magnet could be slid through a shaft. A bar magnet could be rotated or moved linearly. Joral offers a Designer Kit containing an encoder and an assortment of magnets. Consult the factory for additional information.		    
 
         

Joral  LLC    |  5050 S. Towne Dr.   |   New Berlin, Wi 53151   |   262-522-3266