Product Details

AV6M

Absolute Performance

Standard 36mm and 58mm Sizes
Up to 32 Bit Resolution
Moisture-Proof, Shock Resistant Magnetic Sensor
Singleturn or Multiturn
Up to IP69K Rating
Superior Bearings and Seals
No Batteries or Gears!
-40° to 85°C Operation
2 Year No-Hassle Warranty

CONFIGURE & PRICE ENCODER

Product Manual

Data sheet

Accessories

3D View

Description

AV6M shafted magnetic absolute rotary encoders offer excellent performance and durability in a cost-effective package. By utilizing Wiegand wire energy harvesting technology combined with magnetic sensors, Avtron has created an absolute encoder design which requires no batteries, long-term capacitors, glass disks, or gears! Also available: hollow shaft model (HS6M), severe duty models (AV30, HS40), as well as optical models (AV6A, HS6A) for ultra-precision applications.

AV6M encoders have superior shaft seals and bearings that stay sealed to keep contaminants out, through temperature cycling and liquid sprays. Moreover, the magnetic sensor can see through oil, dust and dirt that disable ordinary optical absolute encoders.

The AV6M features a broad range of industry standard communication protocols: from analog outputs to CANopen, J1939, Profinet, Profibus, SSI and EtherCAT, you will find the communication protocol you need.

Our AV6M encoders combine magnetic sensors and superior bearing and seal technology to give top performance in industrial applications. Select AV6M today!

Specifications

Operating Power:
SSI: 5-30VDC; 30mA @ 24VDC, 125mA @ 5VDC
Analog V Out: 8-32VDC; 15mA @ 24V
Analog I Out: 8-32VDC; 20mA @ 24V
Output Format: Analog, CANopen, J1939, Profinet, Profibus, SSI, EtherCAT
Accuracy: +/-0.0878° (+/-5.268 arc-min)
Temperature: -40°C to 85°C* (Std -30°C to +85°C)
Environmental: IP69K* (Std IP65)
Shaft Load: 300N axial, 300N radial* (std. 40N axial, 110N radial; flange 6 180N axial, 180N radial)
Vibration: 5-1000Hz, 30G*; (Std 10G)
Shock: 200G, 11ms* (Std 100G, 3ms)
Weight: 0.33-0.40lb [150-180g]
Certifications: CE

*Extended temp. range, shaft load capability, shock and vibration rating require flange style "6" or "7"

More Advantages

More than 2X the axial and side load capability of the competition
No internal gearbox to wear out
Software settable zero point for SSI output
Optional factory-programmable cam limits
Optional 5V operation
Shock and vibration withstand upgrade available

Markets & Applications

Industry	Mining	General	Wind Power	Pulp & Paper	Oil & Gas	Marine	Metals	Machinery	Crane & Hoist
Light Mill Duty HS4 Encoder Programming Tool Cables and Connectors Encoder Couplings RUSH AV4 AV25 HS25A AV6A HS6A K661 AV6M AV4 HS35A AV20
Mill Duty M185 Cables and Connectors Encoder Couplings AV32 HS35M HS6M K661 M3 HS35X
Heavy Mill Duty XRB3 AVSK Cables and Connectors AV56S XR45 AV44 AV45 AV56A XR5 XR12 AV85A HS45 K661 XP5 XR115 XR125 XR4F XR56A XR850 XR85A AV115 AV125 AV67A HS44 AV850
Severe Mill Duty XRB3 Cables and Connectors Encoder Couplings AV5 AV30 XR5 AV12 XR12 HS40 K661 M6C XP5 XPH1 XPH8 XR485 XR685 M7 AV685 AV485 AV30B

Avtron AV6M magnetic 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.

Accessories

Cables and Connectors

PRODUCT GLOSSARY

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.
Accuracy

Encoder accuracy is the ability of�or limit to the encoder to repeat the exact same signals, given the exact same mechanical position.� Accuracy and resolution may be independent--an encoder can have higher accuracy than resolution, and vice versa.� Avtron incremental encoders are typically accuracy rated at +/-1 count of their resolution; Avtron absolute encoder accuracy varies by model.
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
CPR

Counts Per Revolution. Used to express the resolution per turn of an absolute encoder. (Similar to PPR in an incremental encoder). CPR is sometimes also expressed as bits of resolution per turn (example 12 bits = 4096 CPR).
Coupled/Coupling

Refers to a flexible device that is used to link a solid shaft encoder to the shaft to be monitored. Avtron strongly recommends isolated, flexible disk style couplings in heavy duty applications to maximize encoder bearing life. For light mill duty applications, flexible helical couplings are a great option. If there's a large amount axial shaft movement or misalignment, shift to magnetic couplings.
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
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
Flange Adapter

A Flange Adapter provides the NEMA 56C motor mounting face and properly locates the encoder shaft. The encoder shaft and motor shaft are then connected using a flexible coupling. (Drawing "A") Often flange adapters can be eliminated by directly mounting a modular encoder such as an Avtron AV125, AV850, AV56, AV67, AV85, AV115 unit on the motor flange. (Drawing "B")
Foot Mount

Foot Mount encoders are bolted to a motor foot, shelf, or other nearby location. The solid shaft encoder is coupled to the shaft to be monitored. Modern Avtron encoders (AV485) require a separate foot mounting bracket. To eliminate coupling and alignment maintenance issues, foot mounting installations can be upgraded to a hollow shaft encoder such as the AV685.
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.
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.
Light Source

Typically an IR LED or laser which shines through or on the optical disk of an encoder. The light source is received by the optical sensor.
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.
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.
Magnetic Rotor

A magnetized disk with multiple north and south poles lined up around the perimeter of the disk. A magnetoresistive sensor detects the transitions and generates the pulses generated by the magnetic encoder.
Multiturn

Multiturn refers to the capability of an absolute rotary encoder to output the position accurately including how many times the shaft has been rotated. The absolute encoder will report this position correctly, including both the position within 1 revolution as well as the total number of turns, whether the encoder was powered when the turns took place or not. Avtron multiturn absolute encoders do not use batteries, and Avtron absolute magnetic encoders do not use gears for maximum reliability. Example: Avtron AV30 severe duty absolute encoder. For more information on absolute rotary encoders-Wikipedia: http://en.wikipedia.org/wiki/Rotary_encoder.
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.
Resolution

Resolution describes how many individual slices or positions can be reported by an incremental or absolute encoder. For incremental encoders the number of PPR (pulses per revolution) expresses resolution; for absolute encoders, PPR, or counts per turn or bits of resolution may be listed.
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
Single Turn

Single turn refers to absolute encoders--the encoder accurately reports the position within 360 degrees of travel to the resolution specified. Multiple turns are ignored--multiturn absolute encoders are required to track and report position over multiple turns as well as the position within 1 turn. Avtron absolute single-turn encoders are more durable because they don't use glass disks. For more information about absolute rotary encoders: Wikipedia: http://en.wikipedia.org/wiki/Rotary_encoder
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.
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