Encoder and resolver signal conditioners accept encoder and resolver measurements and convert or condition these signals into digital data or suitable levels.  Important parameters to consider when selecting encoder and resolver signal conditioners include the input specifications, device configuration, form factor, user interface, connection to host, and features. Important input specifications to consider for encoder and resolver signal conditioners include input channels, input...
Learn More about Encoder and Resolver Signal Conditioners


Q & A on Encoder and Resolver Signal Conditioners

We asked our users for their input on Encoder and Resolver Signal Conditioners. Here are the results of 61 users familiar with Encoder and Resolver Signal Conditioners.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing encoder and resolver signal conditioner design?
9 answers
Answers:
The electronic packages are now so small and power consumption so low that generally it is not needed to have the conditioner as a separate device, unless the required output is not a standard industry offering..
~Chris S, Design Engineer, Titusville, FL
Improved magnetic sensing technologies; growing implementation of open communication protocols; miniaturization of sensor and signal processing components.
~Marketing/Sales, Sandpoint, ID
Nuclear applications are on the rise. Resolvers tend to provide a more hardened design.
~Bill H, Manufacturer, Troy, MI
Contactless detection, number of pulses per revolution, radiation hardening.
~Design Engineer, Oakville, Canada
ATEX, Class/Div, Class/Zone, IECEX
~Brian W., Encoder Product Manager, Independence, OH
DSP chips and interface protocols.
~PJ W, Engineering Consultant, Whippany, NJ
ASIC, reduction of size
~Dan G, General Management, London, UK
Host computer
~Engineering, Design, Juarez, Mexico
Fieldbusses
~Engineering, Design, Venezia, Italy

Q:
From your perspective, which companies are creating the most innovative encoder and resolver signal conditioners?
10 answers
Answers:
American Aerospace Controls BANNER ENGINEERING BEI Dynapar-Northstar Electro-Sensors Foxboro HBM ITT Neo-Dyn OMRON Patriot Sensors & Controls Pepperl+Fuchs Poly-Scientific Sentran LLC Servo Systems SICK Rotoguard Speed Switch TURCK
~Chris S, Design Engineer, Titusville, FL
Heidenhein, Sick-Stegmann, North Atlantic
~Engineering, Design, Venezia, Italy
Tr electric is good, but expensive.
~Erik S, Design Engineer, Belleville, Canada
Maxon, Avago, Sick Stegmann
~Dan G, General Management, London, UK
Encoder Products Company, BEI
~Marketing/Sales, Sandpoint, ID
Analog Device Inc.
~PJ W, Engineering Consultant, Whippany, NJ
P&F MTL
~Engineering, Other, Port Harcourt, Nigeria
We are! We have 13 different type of units currently and are in the process of making a containerized version.
~Bill H, Manufacturer, Troy, MI
Vega cnc
~Engineering, Consulting, Delta, Canada
BEI
~Engineering, Design, Juarez, Mexico

Applications and UseTop

Q:
What are some of the applications you have used encoder and resolver signal conditioners for?
15 answers
Answers:
Converting single channel signals to differential signals for long distance cable runs. Signal transmitter/booster for long cable runs--wood processing, gantry crane.. Signal splitters for multiple receiving devices powered by one encoder-- a food processing application.
~Marketing/Sales, Sandpoint, ID
We have used encoders for speed control on motor drive systems and resolvers for position control when using 2 or more drives to give a synchronous lock between conveying systems.
~Engineering, Process/Production, Westerham, Great Britain
Cam sensor, Crank sensor, Wheel speed sensor, Throttle position sensor, Transmission position sensor, all of them in the automotive industry.
~Engineering, Design, Juarez, Mexico
Machine tool, nuclear, robotics, transfer lines, cranes, pile drivers, painting systems, hydraulic press, etc...
~Bill H, Manufacturer, Troy, MI
To provide engineering measurement feedback in critical control applications. Lifting, positioning, safety.
~Chris S, Design Engineer, Titusville, FL
Resonant frequency pile driver + resonant frequency rotary drill.
~Engineering, Consulting, Delta, Canada
Voltage level changes, intrinsic safety, signal multipliers
~Brian W., Encoder Product Manager, Independence, OH
Manipulator joints angular position, motion control
~Engineering, Design, Venezia, Italy
Gates, booms (slew/Luff) traverse position.
~Erik S, Design Engineer, Belleville, Canada
Measurement of depth in oil drilling rigs.
~Engineering, Other, Port Harcourt, Nigeria
To control motor speed & positioners.
~Engineering, Other, Wigan, United Kingdom
Servo Motors and Energy Saving Pumps
~PJ W, Engineering Consultant, Whippany, NJ
Control Loops and Overspeed trips.
~Engineering, Design, Bristol, Great Britain
Motor positioning, position input
~Dan G, General Management, London, UK
Servo motion feedback.
~Design Engineer, Oakville, Canada

Q:
Please share with us any “non-standard” applications that encoder and resolver signal conditioners have been used for.
2 answers
Answers:
Detection of motion during a power off state. Upon power up, the last stored position had to be with in a specific tolerance or the board had to issue an "Out of Position" fault.
~Bill H, Manufacturer, Troy, MI
I have used them for input position sensing in ways not already available in the public domain.
~Dan G, General Management, London, UK

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of encoder and resolver signal conditioners?
3 answers
Answers:
Yes - the encoder cannot produce the required output for max motor speed, and encoders which do not work to low temperatures. Some sealed encoders can get very hot with constant use.
~Dan G, General Management, London, UK
Loss of position feedback always has the potential to be disastrous. Loss of signal detection should always be used.
~Bill H, Manufacturer, Troy, MI
If the output lines are wired to the power supply, it's an instant killer.
~Design Engineer, Oakville, Canada

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
12 answers
Answers:
Compact Form Factor Single Supply Voltage Ease of Set-up Auto Gain Adjust Loss of signal Detection High Resolution 8192 quad counts
~Bill H, Manufacturer, Troy, MI
Non-Zener design for intrinsic safety barrier devices. Multiple channels in a single device. Maximum current let-through.
~Brian W., Encoder Product Manager, Independence, OH
Convert digital square wave to voltage; signal splitter to allow one encoder to supply data to 4 or more devices.
~Marketing/Sales, Sandpoint, ID
Lightweight, small form factor, no internal bearings (relies on motor bearings so cheaper).
~Dan G, General Management, London, UK
Encapsulated board for increased environmental rating + increased resistance to vibration.
~Engineering, Consulting, Delta, Canada
Input filtering high sample rate multiple format outputs
~Chris S, Design Engineer, Titusville, FL
Universal output (drive, open collector, npn, pnp, etc)
~Design Engineer, Oakville, Canada
Easy interface with motor drives, standardization.
~Engineering, Design, Venezia, Italy
Simple in input signal connection and reliable.
~PJ W, Engineering Consultant, Whippany, NJ
Convert frequency to 0 - 50volts pulse.
~Engineering, Other, Port Harcourt, Nigeria
Fit and forget engineering.
~Engineering, Process/Production, Westerham, Great Britain
Small and rugged
~Erik S, Design Engineer, Belleville, Canada

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of encoder and resolver signal conditioners?
4 answers
Answers:
Ensure you have enough bandwidth--encoders commonly output 100kHz or more...most repeater/barrier devices were designed for low frequency and won't work right. Worse yet, they will work at low speed and cut out as speed/frequency rises.
~Brian W., Encoder Product Manager, Independence, OH
When using resolvers: Remember they are an analog device - Proper grounding and shielding should be observed
~Bill H, Manufacturer, Troy, MI
Be mindful of the frequency limitations.
~Chris S, Design Engineer, Titusville, FL
Definitions of terms on datasheets.
~PJ W, Engineering Consultant, Whippany, NJ

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using encoder and resolver signal conditioners?
6 answers
Answers:
Check the outputs of the encoder match the inputs of the reader. Check the encoder gives enough PPR to achieve the required accuracy. Check the physical shape and size of the encoder to avoid interferences. Check the mounting and coupling options.
~Design Engineer, Oakville, Canada
Establish if you need incorporated bearings, max output frequency required, does the encoder have differential outputs (if req'd), ease of mounting to your particular system.
~Dan G, General Management, London, UK
Ensure you fully understand the input circuits you are connecting to. Some devices that require 24V in will switch with an input threshold of 6V, others 11V, and a few >15V!
~Brian W., Encoder Product Manager, Independence, OH
Single Supply Voltage Removable connectors for the interface Loss of Signal Detection If application is for a high speed application a non-PLL design is best
~Bill H, Manufacturer, Troy, MI
Determine the frequency and sampling rate of the system before specifying the encoder/resolver and signal conditioners.
~Chris S, Design Engineer, Titusville, FL
Read datasheets carefully.
~PJ W, Engineering Consultant, Whippany, NJ


Related eNewsletters
See More

Also on GlobalSpec...
  • Receive email updates on new products and suppliers of interest to you
  • Online, interactive conferences / trade shows featuring latest news and industry trends
  • CR4
    Q&A and discussion for the engineering, scientific, and technical community
  • Engineering and scientific news from hundreds of sources
  • Industrial manufacturers and distributors