Avtron M6 Hazardous Duty Encoders

Avtron M6 Hazardous Duty Encoders

16 lbs. of Tough Encoder!

  • Explosion protected
  • Flameproof/Increased Safety
  • Heavy, Mill Duty
  • Up to 1200 PPR
  • Immune to water, oil, dust, dirt, etc.
  • Withstands extreme shock and vibration
  • Extra heavy-duty bearings
  • Optional dual isolated outputs
  • Does not require intrinsic safety barriers
  • ATEX/CENELEC certified for Zone 1 applications
  • Excellent for oil drilling and gas pipeline applications
Outline Drawing

Avtron M6 Hollow Shaft

Explosion Protected, Magnetic Hollow Shaft Mount Encoder, 1" to 2 3/8"

M6-4 thru -7 explosion protected heavy mill duty encoders are designed for direct mounting on motor or load shafts, from 1" to 2 3/8". Other models offer, respectively, face mount (M6-1) and foot mount (M6-2) using a coupled solid shaft.

Forget fragile glass disk encoders!
The M6 features Avtron’s rugged magnetic sensor and solid metal rotor technology. Our shatterproof, moisture proof systems ensure your application has maximum uptime.

No more tiny stub shafts on big motors or load shafts! The hollow shaft (tethered) models offer direct mounting on big shafts, from 1" to 2 3/8", without flanges, reducers, couplings, or other hardware. No rework is needed; just mount the encoder directly on the shaft, and secure the tether arm. The heavy duty bearings withstand runout and vibration that destroy lesser encoders.

Why buy an “explosion proof” encoder that requires protection from the slightest bump or raindrop? Pick an M6 explosion protected, heavy duty encoder!

Operating Power: 5-24 VDC; Current 120mA, no load
Output Format: A,A–, B,B–; Optional Marker Z,Z–
Frequency Range: 0 to 100 KHz
PPR: 240-1200
Speed:
  • 5000 RPM Max. Std., 1" to 1 1/8" shaft
  • 3600 RPM Max. Std., 2" to 2 3/8" shaft
    (for higher speeds, consult factory)
Temperature: 80C° to -40°C (-40°C optional, -20°C standard)
Chemical: Polyurethane enamel paint protects against salt spray, mild acids, and bases
Explosion Protection:
  • ATEX 0539 II 2G
  • Ex de IIC T4 (Tamb -20° to +80°C Standard, Tamb -40° to +80°C Optional)
Weight: 16 lbs./7kg.

All dimensions are in inches [millimeters].
Specifications and features are subject to change without notice.
  • Threaded rod torque arm for easy tethered mounting
  • Highly resistant to electrical and magnetic motor and brake noise
  • Second isolated output may be different PPR
  • Available armored wire gland
  • IP66 Enclosure
Industry General Food & Beverage Pulp & Paper Wood Products Wind Power Crane & Hoist Metals Mining Marine Oil & Gas

Light Mill Duty

AV20, AV25, AV6A, AV6M, HS25A, HS35A, HS6A, HS6M, K661, 		                   

Mill Duty

ADDG, HS35M, K661, M185, M3, M3(small), M925, RAHS35M 		                   

Heavy Mill Duty

AV115, AV125, AV45, AV5, AV56, AV56S, AV67, AV85, AV850, HS45, K661, M4, M4(small), M460, M628A, XR115, XR12, XR125, XR45, XR4F, XR5, XR56, XR67, XR85, XR850, XRB1 		                   

Severe Mill Duty

AV12, AV30, AV485, AV5, AV685, HS40, K661, M484, M6, M7, M925, XR12, XR47, XR485, XR5, XR685, XRB1, XT45 		                   

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  • Installing an Avtron M6 Encoder Installing an Avtron M6 Encoder

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Product Glossary

  • A Quad B

    A Quad B refers to the set of output quadrature signals from an incremental quadrature encoder to indicate speed and direction, including complements: A, A NOT, B, B NOT (, , , ). Most Avtron encoders offer A Quad B output at no extra cost.  For more information on quadrature- Wikipedia: http://en.wikipedia.org/wiki/Quadrature_phase

  • Anti-Rotation Arm

    A device used to prevent hollow shaft encoders from spinning with the shaft rotation. It is also called a tether or a torque arm. To prevent encoder bearing damage, anti-rotation arms are very flexible and permit all movements, including axial shaft movement but not rotation.

  • ATEX

    ATEX is a directive used worldwide for equipment, including encoders, to be used around or in explosive atmospheres. ATEX certified equipment is NOT necessarily interchangeable with US-based UL Class/Division rated equipment. ATEX is an alternative and different system. Avtron offers a full famliy of Explosion Protected, ATEX certified encoders. M6-(4-7) and the XR series of encoders.

  • Axial Shaft Movement

    Motor shaft movement in or out, relative to the ends of the motor. Often motors that use roller or sleeve bearing construction have more axial shaft movement. Most Avtron modular encoders tolerate +/- 0.050" of axial movement maximum. Use hollow shaft encoders for high axial movement motor styles, such as MD motors. Most competitors’ modular encoders tolerate much less axial movement than Avtron products.

  • Encoder

    A device which indicates position and speed via a set of digital outputs. Incremental encoders output quadrature (A Quad B) signals, and may add a marker pulse once per revolution.  Absolute encoders typically indicate position via a digital message, a set of parallel outputs, or analog values.

  • Explosion Protected

    Explosion protected equipment has additional protection/safety enhancements for use in explosive atmospheres. Explosion Protected devices maybe placed directly into hazardous areas within their nameplate rating. No additional equipment is required if installation instructions are followed properly. By comparison, Intrinsically Safe devices may require the use of additional, external protection/current limiting devices outside of the hazardous area. Avtron offers hollow shaft M6-(4-7) Explosion Protected encoders.

  • Heavy Mill Duty

    Heavy Mill Duty encoders are designed to withstand temperature cycling, extreme temperatures, contaminants, bearing loads, and physical force.

  • Hollow Shaft

    Hollow Shaft encoders mount by passing the shaft of the motor into or through the encoder. Hollow shaft encoders are easy to mount and replace but are vulnerable to damage. Also, the weight of the encoder must be considered for small motor shafts < 0.75" diameter. Avtron offers a full range of hollow shaft encoders, including: AV685, HS25A, HS35A, HS35M, M3, M4, M6, M7, XP45.

  • Magnetic Encoder

    Magnetic and magnetoresistive encoders typically use a magnetized rotor with north and south poles lined up around the perimeter of the disk. A magnetoresistive sensor detects the transitions, and these are the counts or pulses generated by the encoder. Magnetic encoders withstand dirt, dust, water, and temperature changes far better than optical encoders.

  • Wide-Gap Technology

    Avtron encoders use special optical sensors and magnetoresistive sensors, combined with proprietary circuit designs to allow the sensor to be located much farther from the magnetic rotor or optical disk. This eliminates sensor crashes and makes mounting easy and forgiving of mechanical variation.

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