Miniature Length Sensor

ZMD Series Contact Rotary Encoder

Miniature Length Sensor, Rotary encoder

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Compact Size
Quadrature Output
Built-In Spring Tensioning
Mounts in Any Position
4.75 to 28 Vdc Input Voltage
NPN Open Collector Output
Measuring Wheel Sold Separately

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Description

The ZMD Series miniature length sensor is compact in size and easy-to-use, designed for light to medium duty sensing applications. It features a built-in springloaded torsion arm that provides a simple-to- adjust torsion load, allowing the unit to be mounted in almost any orientation, including upside down. Using a 6" circumference wheel, the ZMD can be used on almost any surface, while operating at speeds up to 3000 feet per minute. The housing is a durable, conductive composite material that will eliminate static build up. Whether you need to measure speed, position, or distances, the ZMD series contact rotary sensor is the ideal solution.

SPECIFICATIONS
ELECTRICAL
Input Voltage: 4.75 to 28 Vdc maximum for temperatures up to 85°C; 4.75 to 24 Vdc for temperatures between 85 to 100°C (185 to 212°F), reverse polarity protected
Input Current: 100 mA max (65 mA typical) with no output load
Outputs: NPN open collector transistor, 20 mA maximum current
Maximum Frequency: 200 KHz standard
Noise Immunity: Tested to BS EN61000- 6-2; BS EN50081-2; BS EN61000-4-2; BS EN61000-4-3; BS EN61000-4-6, BS EN500811 [Tested with 2 m (6.6') cable]
Symmetry: 180° (±18°) electrical
Quad. Phasing: 90° (±22.5°) electrical
Minimum Edge Sep: 67.5° electrical
Accuracy: Within 0.017° mechanical or 1 arc-minute from true position (for PPR>189)
MECHANICAL
Maximum Mechanical Speed: 6000 RPM. Higher speeds may be achievable, contact the factory
Shaft Material: Stainless Steel
Shaft Tolerance: +0.0000/-0.0004" (+0.000/-0.010 mm)
Radial Shaft Load: 5 lb., rated load of 2 to 3 lb for maximum bearing life
Axial Shaft Load: 5 lb., rated load of 2 to 3 lb for maximum bearing life
Starting Torque: 0.05 oz-in IP50; 0.4 oz-in IP65
Electrical Connection: 2 m (6.6') cable, (foil and braid shield, 24 AWG conductors). Drain wire internally connected to case
Mounting: Pivot Shaft can be mounted from either side of the housing and is field reversible
Housing: Stainless steel fibers in a high temperature nylon composite
Weight: 142 g (5 oz) typical
ENVIRONMENTAL
Operating Temperature: -20 to 85°C (-4 to 185°F)
Storage Temperature: -25 to 85°C (-13 to 185°F)
Humidity: 98% RH non-condensing
Vibration: 10 g @ 58 to 500 Hz
Shock: 80 g @ 11 msec duration
Sealing: IP50

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Part Number/ Desc.

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Description

AU-ZMD0250B

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