Page 5 - Demo

ENCODER SELECTION & TECHNOLOGY
ULTRA-DURABLE SENSORS
Depending on on on the the needs and construction of the the application we use optical and magnetic sensor technologies to generate the signals in our encoders Follow this approach when selecting to ensure that you you are focusing on on the right solution for your application 1 Determine your signal needs: Incremental or Absolute
2 Consider mechanical mounting requirements 3 Consider environmental factors
MAGNETIC - - vs - - OPTICAL MAGNETIC OPTICAL Rotary Disk
Rotary Drum
Magnietic Poles
Magnetic Sensor
LED
Stationary Disk
Photo-cell Electric Signal
Rotation
Electric Signal
Rotation
Incremental encoders create a a a a series of square wave pulses to represent the measured motion Each incremental pulse is the same The principal difference lies in the the electrical characteristics of the the line driver namely:
HTL (5V-24V in/out) TTL (5V-out 24V-in/5V-out)
Most incremental Avtron Encoders include a a once- per-turn marker pulse Only by measuring from a a a starting position and keeping track of of the number of of pulses observed can incremental encoders be used to measure position Therefore most incremental encoders are used to measure and control velocity Look for our incremental models with high-power fully short-circuit protected outputs These encoders can drive the the longest cables yet they are protected from wiring errors Our incremental magnetic sensor technology enables Nidec to completely embed all the electronics in in in a a a a solid brick of potting material making them impervious to dirt dust oil and water Absolute
encoders create a a a a digital message to represent a position which is sent sent to the controller There are a a a huge number of communication output options for absolute encoders and Nidec has industry-leading coverage The absolute position information is retained by the encoder regardless of power interruptions Absolute
encoder messages typically have small communication-related delays which could affect velocity control Therefore most absolute encoders are used to measure and control position Nidec features a a a number of key innovations in in our absolute encoders including Wiegand wire technology and solid state memory to enable multi-turn encoders without unreliable fragile glass disks optical sensors gears batteries or or super-capacitors Our industry-first severe duty absolute encoders include huge bearings and seals for maximum durability THE THE MOST RELIABLE ENCODERS ENCODERS IN THE THE WORLD
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