WDA Motion Alignment Sensor
Belt or Chain Alignment and Motion Monitor
WDA3V34CAI, HTAS1V34

Non-contacting extended range magnetic proximity sensor, not affected by dust or material build up, used to detect moving ferrous material up to 100mm away from the sensor. The WDA sensor can be used on bucket elevators to measure speed and alignment by sensing either the metal elevator buckets, or the ferrous bolts attached to plastic buckets. A more specialized use for the WDA switch is as a broken/slack chain detector on drag chain conveyors, or as a non-contact speed switch for screw conveyors. 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.

4B WDA motion alignment sensor
Product Features
  • Magnetic Proximity Belt Speed and Belt Alignment Sensor
  • Detects Moving Steel Ferrous Targets
  • Adjustable Sensing Range of 25 – 75mm
  • Not Affected by Material Build Up
  • Stainless Steel Construction
  • High Temperature Version Available
Electronics Application

Bucket Elevator

Bucket Elevator

Chain Conveyor

Chain Conveyor
Certification

ATEX

ATEX
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CE

CE
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CSA

CSA
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GOST-R

GOST-R
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IECEx

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

Part numbers & Accessories:

  • WDA3V34CAI  - WDA Standard Sensor
  • HTAS1V34 WDA -  High Temperature Sensor
  • WDAMB  - Sensor Mount (Included with Sensor)
  • AS62  - Abrasion Shield
Parameter WDA3V34CAI HTAS1V34
Supply Voltage 12-24VDC 12-24VDC
Supply Current 65mA 130mA
Detection Range 25-75mm 25-75mm
Detection Rate 20-2000 Targets/Min 20-2000 Targets/Minute
Outputs(Max) 100mA Sink; 50mA Source 100mA Sink; 1mA Source
ATEX and IECEX Zone 20 Not Approved
CSA Class II Div 1 Not Approved
Protection IP66 IP66
Temperature Rating -20°C to +50°C -29°C to +150°C Continuous
Dimensions 50mm DIA x 150mm length 50mm DIA x 150mm length

 

 

Watchdog™ Super Elite (WDC4)

Watchdog Super Elite hazard monitor (WDC4)
Watchdog™ Super Elite (WDC4)

The Watchdog Super Elite (WDC4) is easy to install and simple to set-up. The system processes signals from sensors for belt misalignment, belt speed & slip, continuous bearing temperature, pulley misalignment and plug conditions for bucket elevators or belt conveyors.  When an alarm is detected it will sound an alarm and provide shutdown control of the elevator/conveyor and feeding system.
 
A 3.5” LCD screen displays the entire system status at a glance.  Password protected controller settings can be set up either directly on the LCD screen, or by a PC application and transferred to the WDC4 via an SD card.
The Watchdog Super Elite can be connected directly to a PLC using the Modbus TCP/IP protocol, or integrated into HazardMon.com®.  This secure cloud based solution provides live system status, graphs and historical data that is viewable on any web-enabled device (smart phone, tablet, desktop PC).

PRODUCT DETAILS

  The WDA sensor will not calibrate, what is the issue?  
Make sure that the orange wire is connected correctly, this powers the potentiometer (calibration screw).   

  Why will the LED on the back of the sensor not turn on?  
  Check to see that there are no objects stuck to the face of the sensor (washer, bolts, etc.). Due to the magnetic pull on the face of the sensor, objects can stick and interfere with the sensor. 
     
  What if the best sensing depth of the WDA sensor?  
The WDA sensor can detect ferrous targets from 1 to 3 inches away.  Keep in mind the distance of other objects within the sensing area. For example, a belt splice on a bucket elevator may be longer than the intended target and can interfere or hit the WDA sensor.