WDA4 Motion Alignment Sensor
Belt or Chain Alignment and Motion Monitor
WDA4V342AI, WDA4V342AI-HT

Non-contacting high-power, extended range magnetic proximity sensor, not affected by dust or material build up, used to detect moving ferrous material up to 75mm away from the sensor.

The WDA sensor is designed for use with bucket elevators to detect the buckets in order to measure speed and alignment. It can also detect screw conveyor flights, and ferrous bolts when attached to non-ferrous buckets. A more specialized use of the WDA sensor is for broken/slack chain detection.  

The sensor is used in conjunction with a PLC or with 4B's Watchdog™ Elite or A400 Elite control units.  Two output signals are provided: one signal is a pulse output, representing each bucket detected: the second signal is a continuous output when moving buckets are detected.  The continues output can be wired normally energized or normally de-energized (please see manual).

4B WDA motion alignment sensor
Product Features
  • Magnetic Proximity Belt Speed and Belt Alignment Sensor
  • Adjustable Sensing Range 25mm to 75 mm
  • LED Indication
  • Mounting Bracket Included
  • ½” NTP Conduit Entry
  • Stainless Steel Construction
  • High Temperature Version Available
  • IP66 Protection
     
Electronics Application

Bucket Elevator

Bucket Elevator

Chain Conveyor

Chain Conveyor
Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CE

CE
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CE Logo

Note: The WDA is Available in Two Models (Standard & High Temp.).

Part numbers & Accessories:

  • WDA4V342AI -   WDA4 Standard Sensor, with earth stud
  • HTAS1V34   -  WDA High Temperature Sensor – NOT APPROVED
  • WDAMB -   Sensor Mount  (Included with Sensor)
  • AS62  -  Abrasion Shield
     
Parameter WDA4
Operating Voltage Range 12 to 24 VDC + 10%
Supply Current 40 mA
LED Indicator ·Green (Flashing) – Target Detected
·Green (Off) – No Target Detected
Pulses Output (MAX) Solid State Relay, 25 mA sink or source @ 240 VAC/DC (MAX), non-inductive
Continuous Output (MAX) Solid State Relay, 25 mA sink or source @ 240 VAC/DC (MAX), non-inductive
Detection Range Adjustable 25 to 75mm
Detection Rate 20 – 2,000 PPM (Pulses Per Minute)
Cable 3m 6 core
Operating Temperature -20 °C to +50 °C
Conduit Entry ½” NPT
Ingress Protection IP66
Approvals ATEX, IECEx Zone 20