Optic Shaft Encoder R20 Series
Series 20 with Heavy Duty Bearings
The model R20 is an optical shaft encoder in a 2" diameter x 1-3/4" long housing that can be face mounted using three 6-32 x .25" deep mounting holes on a 1.75" diameter bolt circle. The shaft is up to 3/8" diameter, either single or double ended. Electrical connection is through a 16mm circular connector or an attached cable.
Standard Features and Options:
• 3/8" diameter shaft
• Unbreakable code disk
• Up to 1200 pulses per revolution
• Attached cable or optional connector
• Heavy Duty bearings
• Short circuit and ESD protected
MECHANICAL
- Maximum Speed: 6,000 rpm
- Shaft Loading:
- Radial: 40lbs. / 18.1kg
- Axial: 30lbs. / 13.6kg
Note: a flexible shaft coupling is recommended
- Bearing Life: 32 x 1,000,000/rpm = hours
- Materials:
- Case: Aluminum, anodized
- Shaft: 303 Stainless steel
- Weights: 10oz (285 grams)
ELECTRICAL CONNECTIONS
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Optional 6-pin
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Optional M12 4-pin
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Function
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Wire color
|
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1
|
3
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Common
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Black
|
|
2
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1
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+vdc
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Red
|
|
3
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-
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Output Z
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Brown
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4
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4
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Output A
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White
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5
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2
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Output B
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Green
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6
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-
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not used
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-
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6-pin connector is Amphenol T3402000 or equivalent M12 4-pin is Turck FS4.4/18.25 or equivalent
- Differential Line Driver Outputs:
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Optional 8-pin Connector
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Function
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Wire Color
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1
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Output +A
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White
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2
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Output +B
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Green
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3
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Output +Z
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Yellow
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4
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Supply voltage
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Red
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|
5
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Common
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Black
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6
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Output -A
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Blue or Green
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7
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Output -B
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Brown
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8
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Output -Z
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Orange
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8-pin connector is Amphenol T3506000 or equivalent
Standard cable length is 10ft / 3 meters.
Other lengths are available.
ELECTRICAL
- Supply Voltages: (specify when ordering)
5 VDC or 8-30 VDC
- Current: 500 mA max (no load)
100 mA max (line driver)
- Pulse Rate: 0 - 30 kHz
- Pulses per Revolution: (specify when ordering)
1 to 1200
- Operating Temperature: 0° to 70° C
- Output Circuit: (specify when ordering)
Output voltage level is approximately the same as the input voltage level.
- Single Ended:
- 7273 open collector (30 VDC max, 50 mA max)
- 7272 Push-Pull (50 mA max source or sink)
- Differential Line Driver:
- 7272 differential line driver (also with optional 5vdc output level)
- Output Waveshape:
Square wave outputs A and B are 50/50 duty cycle nominal. Output Z (index output) is approximately the width of one cycle on outputs A or B. Output A leads by 90 for clockwise rotation when viewed from shaft end.
- Pulse symmetry: 180° +/- 30%
- Pulse interval jitter: 30% max
- Quadrature: 90° +/- 30% max
- Phase jitter: 30% max
- Anti-jitter: (single output models only)
Increases the pluse hysteresis to 1/2 of a pulse width, eliminating the effects of mechanical vibration and possible false output pulses. For example a 10 pulse per revolution output has 18° hysteresis (i.e. 360° ÷ 10 X 1/2).