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ELSEMA 

MD240-2 Vehicle Loop Detector  

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MD240-2 

Vehicle Loop Detector

 

Features 

 

Supply 240VAC 

 

Adjustable sensitivity (8 levels via a dip switch) 

 

2 x Relay outputs (each can be configured individually) 

 

Power up and loop activation LED indicator. 

 

Industry standard 11-way plug-in type circular connector.  

 

Two loop detection function CH1 (10 way dip switch) and CH2  
(7 way dip switch). 

 

Application 

 

Controls automatic doors or gates when a vehicle is present source. 

 

Description 

Loop detectors in recent years have become a popular tool having innumerable applications in policing, right 
from surveillance operations to traffic control. Automation of gates and doors has become a popular usage of the 
loop detector.  
 
The digital technology of the loop detector enables the equipment to sense a change in the inductance of the 
loop as soon as it detects the metal object in its path. The inductive loop which detects the object is made of 
insulated electrical wire (32/020; 32 Strand, 2mm diameter) and is arranged either as a square or rectangle shape. 
 
The loop consists of several loops of wire and consideration should be giving to the loop sensitivity when 
installing on different surfaces. Setting the correct sensitivity allows the loop to operate with maximum 
detection (8 levels via a dip switch settings). Channel 1, is set by the 10 way dip switch and channel 2 is set by 7 
way dip switch. When detection occurs, the detector energises 2 relays for the output (each can be configured 
individually). This energising of the relay can be configured into different modes, by selecting the respective dip 
switch. 

 

 
Technical Data  
  

Supply voltage 

240VAC 

Outputs 

2 changeover relays rated at 240VAC, 3A 

Connection 

Screw type terminal 

 
 
 
 
 
 
 
 
 
 
 
 
 

 

Summary of Contents for MD240-2

Page 1: ...the equipment to sense a change in the inductance of the loop as soon as it detects the metal object in its path The inductive loop which detects the object is made of insulated electrical wire 32 02...

Page 2: ...being the least sensitive and 0 015 being the most sensitive Dip switch 3 4 and 5 for CH2 sensitivity selection with 0 8 being the least sensitive and 0 015 being the most sensitive Dipswitch Settings...

Page 3: ...vehicle used to solve the mistake operation If it is recommended Dip switch Settings 3 of CH1 Function Special Functions Dip switch 3 is ON Direction Detection If vehicle moves from CH1 to CH2 then C...

Page 4: ...1 relay will delay 200ms and will give pulse output for 600ms Dip switch Settings 6 7 and 8 of CH1 Sensitivity Sensitivity Selection Eight Levels Choices Dip switch 6 7 and 8 is ON 0 015 highest sensi...

Page 5: ...hannel 2 Loop Function Selection 7 way dip switch Dip switch 1 of CH2 Function Relay Output Type Selection Dip switch 1 is OFF CH2 relay will be present output Dip switch 1 is ON CH2 relay output type...

Page 6: ...Selection Dip switch 3 4 and 5 is ON 0 015 highest sensitivity range Dip switch 3 and 4 is ON 0 02 Dip switch 3 and 5 is ON 0 04 Dip switch 3 is ON 0 08 Dip switch 4 and 5 is ON 0 12 Dip switch 4 is...

Page 7: ...etecting Led Continuously On Indicates vehicle detection Blinking slowly Indicates loop is short circuit or the number of twists after the loop is not enough Blinking fast Indicates loop is open circu...

Page 8: ...cts of cross talk between the two systems The sensing loops and detectors should be positioned at least 2m apart Reset Button Please note The MD240 2 must be reset every time a setting change is made...

Page 9: ...t exceed 30 metres distance between control box and loop Troubleshooting Symptoms Solution If the detector is not working Press reset If red led indicator is not fully lit Check for power supply If gr...

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