Avtron AV6A Absolute Encoder

Avtron AV6A Absolute Encoder

Tough and Compact!

  • Industry Standard 58mm Size
  • Up to 30 Bit Resolution
  • Unbreakable Optical Disk
  • Singleturn or Multiturn
  • IP66 Rating
  • Superior Bearings and Seals
  • No Batteries
  • -40°C to +85°C Operation
  • 2 Year No-Hassle Warranty
Outline Drawing
AV6A absolute rotary encoders fit industry standard 58mm flanges, yet are superior to ordinary absolute encoders. Also available:  HS6A hollow shaft models, AV6M magnetic absolute encoders, AV30 severe-duty absolute magnetic encoders with 58mm, 2.5", and 85mm flange mounting.


AV6A encoders have superior shaft seals and bearings that stay sealed to keep contaminants out, despite temperature cycles or liquid sprays. Our encoder seals are protected by mechanical barriers to prevent flexing or failure. Avtron’s superior bearings permit much larger side and axial loads.


Many competitive optical encoder designs risk sensor damage from any vibration or shock. Some designs even use thin glass disks in "industrial" products! Avtron uses only unbreakable disks.


The AV6A offers a broad range of communication options, from parallel output and SSI to the latest Profibus and Ethernet standards.


Our optical AV6A encoders use superior sensor, disk, bearing, and seal technology to give top performance in industrial conditions. Select an Avtron AV6A today!
Operating Power: Volts: 10 - 30 VDC
Current: 230mA at 10V, 100mA at 24V maximum*
Output Formats: Ethernet/IP*, Modbus TCP*, Profinet*, Powerlink, Profibus, CANOpen, CANSafe, DeviceNet, SSI, Parallel
Accuracy: +/-0.02° (+/-1 arc-min)
Shaft Loading: axial 9lbs [40N], radial 25lbs [110N]
Temperature: -40° to 85°C*
Environment: IP66**
Vibration: 10G, 10-1000Hz
Shock: 30G, 11mS duration*
Weight: 1.21lb [550g]; stainless option 2.7lb [1200g]

*(Ethernet versions require 400mA @ 10V or 160mA @ 24V)
**with standard recommended seals
  • Stainless steel shaft standard
  • Optional all-stainless construction
  • More than 2X the axial and side load capability of the competition
  • Ultra-long-life internal gearbox
  • Software-settable zero point for SSI and parallel output
  • Optional factory-programmable cam limits
  • Optional 5V operation
  • Protected against reverse power wiring
  • Profibus DP & ProfiNet Support for Class 1 & 2 & DPV2 Isochronous (ProfiDrive)
Industry General Food & Beverage Pulp & Paper Wood Products Wind Power Crane & Hoist Metals Mining Marine Oil & Gas

Light Mill Duty

AV20, AV25, AV32, AV6A, AV6M, HS25A, HS35A, HS6A, HS6M, K661,
                   

Mill Duty

AV32, HS35M, K661, M185, M3, M3(small), RAHS35M
                   

Heavy Mill Duty

AV115, AV125, AV45, AV5, AV56, AV56S, AV67, AV85, AV850, AV850Test, AVSK, Carlen Replacement, HS45, K661, M4, M4(small), XR115, XR12, XR125, XR45, XR4F, XR5, XR56, XR85, XR850, XR97, XRB1, XRB2
                   

Severe Mill Duty

AV12, AV30, AV485, AV5, AV685, Carlen Replacement, HS40, K661, M484, M6, M6C, M7, XR12, XR485, XR5, XR685, XR97, XRB1, XRB2,
                   
Avtron AV6A optical absolute encoders replace many competitive models, including:

Allen Bradley:  842A, 842D, 842E, 845GM, 845D, 845G
BEI: H25, HMT25, L18
Dynapar/ACURO:  AC36, AD25, AD34, AD35, AI25
Heidenhain:  ROC410, ROC412, ROC413, ROQ425
Pepperl+Fuchs:  AVS36M, AVS42H,BVM58, BVS58,  CVM36M, CVS36M, CVM42H, CVS42H, CVM58, CVS58, CVM58S, CVS58S, DVM58, DVS58, EVM58, EVS58, FVM58, FVS58,  PVM58, PVS58, RVS58S
 
As well as replacing many other standard 58mm diameter shafted, flanged absolute rotary encoders.
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In This Section

  • Absolute Encoder

    Absolute indicates the position of the rotor or shaft referenced to a fixed starting position. If power is turned off and then on, the encoder recalls the position correctly. It may output the position information on a set of output wires (parallel), or it may output the absolute position using a communications bus, such as Profibus or DeviceNet. Absolute encoders can be single-turn or multi-turn. For more information, Wikipedia:  http://en.wikipedia.org/wiki/Rotary_encoder

  • Absolute Position

    Absolute Position indicates the position of a rotor or shaft referenced to a fixed starting position. Resolvers and absolute encoders can provide absolute position feedback.

  • CANopen

    CANopen is a fieldbus used by Avtron absolute encoders to report position and speed to a controller.  CANOpen uses a 4 wire main bus+drop wiring system (CAN).  CANOpen is hardware-identical to DeviceNet and J1939, but the encoder messages sent are different.  For encoder communications, SSI, Ethernet, or Profibus may be faster than CANOpen.  For more information on CANopen-Wikipedia:  http://en.wikipedia.org/wiki/Canopen

  • Cycles Per Revolution (CPR)

    This is the sine-cosine encoder equivalent to PPR. It indicates the number of sine waves output per revolution, and does not count the cosine waves. Some vendors also use CPR as an equivalent to PPR for digital incremental encoders.

  • DeviceNet

    DeviceNet is a fieldbus used by Avtron absolute encoders to report position and speed to a controller.  DeviceNet uses a 4 wire main bus+drop wiring system (CAN).  DeviceNet is hardware-identical to CANopen and J1939, but the encoder messages sent are different.  For encoder communications, SSI, Ethernet, or Profibus may be faster than DeviceNet.  For more information on DeviceNet-Wikipedia:  http://en.wikipedia.org/wiki/Devicenet

  • EnDat

    EnDat is a proprietary protocol used for some absolute encoders.  EnDat encoders are only manufactured by one company, eliminating competition.  Most controllers which support EnDat also support SSI, which is a open protocol to all vendors and is used by Avtron absolute encoders.

  • Ethernet/IP

    Ethernet/IP is an Ethernet-based fieldbus used by Avtron absolute encoders to communicate with a controller.  For more information about Ethernet/IP-Wikipedia:  http://en.wikipedia.org/wiki/EtherNet/IP

  • Face or Flange Mount

    A machined surface (NEMA 56C, NEMA FC) on the non-drive end of the motor is used to mount bearingless or pancake encoders such as Avtron AV56 THIN-LINE II™ encoders. Solid shaft, coupled tachometers also flange mounted using flange adapters, also called flowerpots.

  • Fieldbus

    A Fieldbus (communications wiring hardware and software standard) is used to carry absolute encoder signals to the control system.  It may do so automatically on a clock signal input to the encoder (SSI), or in response to a message (ex:  Profibus, DeviceNet).  For more information on fieldbuses:  Wikipedia:  http://en.wikipedia.org/wiki/Fieldbus

  • GSD

    GSD files are text files used in Profibus configuration to instruct the master/scanner device of the information coming from each device (bytes/words/meanings).  The user of Avtron encoders downloads the file, then adds it to his configuration software.  Then he can add Avtron absolute encoders to his bus configuration.  Avtron absolute encoder GSD files are found in the Documents tab for each encoder, on the product page.

  • Hiperface

    Hiperface is a proprietary encoder communications system.  Hiperface encoders are only manufactured by one company.  Most devices that support Hiperface also support SSI, an open vendor protocol supported by most controller manufacturers, and used by Avtron absolute encoders.

  • J1939

    J1939 is a fieldbus used by Avtron absolute encoders to report position and speed to a controller.  J1939 uses a 4 wire main bus+drop wiring system (CAN).  J1939 is hardware-identical to DeviceNet and CANopen, but the encoder messages sent are different; J1939 is primarily used on mobile vehicles.  For encoder communications, SSI, Ethernet, or Profibus may be faster than J1939.  For more information on J1939-Wikipedia:  http://en.wikipedia.org/wiki/J1939

  • Light Mill Duty

    Light Mill Duty encoders are designed for industrial applications but must be protected from contamination, temperature cycling, and physical force, including shock, vibration, and bearing loads. Examples include AV20, AV25, HS25A, and HS35A models.

  • M12 Connector

    M12 (12mm) connectors are a screw or push-on style connector used by Avtron incremental and absolute encoders.  There are different pin quantities, pinouts, and keying, depending on the vendor style supported by the product.  M12 mating cables are typically overmolded, rather than field-solderable, such as MS connectors, or screw terminals, such as EPIC connectors.

  • M23 Connector

    M23 (23mm) connectors are a screw or push-on style connector used by Avtron incremental and absolute encoders.  There are different pin quantities, pinouts, and keying, depending on the vendor style supported by the product.  M23 mating cables are typically overmolded, rather than field-solderable, such as MS connectors, or screw terminals, such as EPIC connectors.

  • Modbus/TCP

    Modbus/TCP is an Ethernet-based communication fieldbus used by Avtron encoders to communicate speed and position to a controller.  For more information on Modbus/TCP-Wikipedia: http://en.wikipedia.org/wiki/Modbus

  • Optical Disk

    An Optical Disk is typically a glass, metal, or plastic disk with fine lines or slots etched around the perimeter that interrupt the beam of light from the light source to an optical sensor. Optical disks can be quite fragile. Avtron uses only shatterproof optical disks with Wide-Gap technology.

  • Optical Encoder

    An Optical Encoder typically uses a light source shining through, or reflecting off, an optical disk with lines or slots that interrupt the beam of light to an optical sensor. Electronics count the interruptions of the beam and generate the encoder’s output pulses.

  • Optical Sensors

    Optical Sensors are typically phototransistors or other light sensors which sense the light emitted by the light source, as interrupted by, or passed through, the optical disk.

  • Parallel

    Parallel outputs are used by some Avtron absolute encoders to communicate the position to a controller.  One wire is used for each bit of resolution, plus one wire for each turn for multiturn units.  Parallel outputs are used for older controllers; newer controllers typically use a communication fieldbus (such as SSI or Profibus) to read the encoder position.

  • Powerlink

    Powerlink is an Ethernet-based absolute encoder communications hardware and software standard used by Avtron absolute encoders.  For more information about Powerlink-Wikipedia:  http://en.wikipedia.org/wiki/Ethernet_Powerlink

  • Profinet

    Profinet (IO) is a communications fieldbus used by Avtron absolute encoders to communicate speed and position to a controller.  Profinet carries Profibus messages over an Ethernet network to and from the encoder.  For more information on Profinet-Wikipedia:  http://en.wikipedia.org/wiki/Profinet

  • Solid Shaft

    Solid Shaft encoders are coupled to the shaft to be measured. The solid shaft encoder body is typically C-Face mounted using a flange adapter, or some models can be foot mounted.

  • SSI

    SSI (Synchronous Serial Interface) is a fieldbus used by Avtron absolute encoders to communicate speed and position to a controller.  SSI is extremely simple and fast.  SSI is also an effective, open vendor alternative to proprietary encoder fieldbuses such as EnDAT and HyperFace.   For more information about SSI-Wikipedia:  http://en.wikipedia.org/wiki/Synchronous_Serial_Interface

  • Wiegand wire

    Wiegand wires generate a pulse of electricity in a coil as a magnet passes near the wire.  Wiegand wires are used in Avtron absolute magnetic encoders to self-power the multi-turn counting engine, so even if the encoder has no power when turned, the absolute encoder correctly reports the number of turns and position.  This allows Avtron to eliminate the glass disks and gears that cause failures in other absolute encoders.  For information on the Wiegand effect-Wikipedia: http://en.wikipedia.org/wiki/Wiegand_effect , Wiegand wire: http://www.epanorama.net/sff/Power%20Electronics/Transformers_and_Magnetics/Magnetics%20-%20Wiegand%20Wire.pdf

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