SafePass LD140 Series Diagnostic Loop Detectors

The LD140 series uses cutting edge technology to provide a loop detector with selectable parameters, all programmable from the buttons on the front panel.

 

The LD140 has all the functions of a normal loop detector plus flexibility and acts as a loop analyser. In addition to changing the function of relays and setting the loop sensitivity there is also an on board vehicle counter.

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The LD140 counts vehicles as they move over the loop and keeps its value in the event of a power failure, the counter has a maximum count of 999999.  The diagnostic capabilities enable you to quickly check loop inductance, loop faults and set the sensitivity very accurately ensuring no false triggers.

The LD140 Series Loop Detectors include the following features:

  • Selectable detect sensitivity
  • Automatic sensitivity boost option
  • Filter timer and extend timer
  • Selectable pulse time
  • Relay 2 mode—Pulse on detect, pulse on undetect, presence or loop fault.
  • Presence mode—Permanent or limited
  • Selectable fail-safe / Fail secure operation
  • Adjustable loop frequency
  • Power fail memory

 

For more information download our product datasheet.

Specification
LD140
LD142
Power Requirement
240vac
12/24vac/dc
Presence Relay 1
Change over contact 0.5A / 220vac:
(Failsafe  – normally energised)
(Fail secure – normally de-energised)
Presence Relay 2
Change over contact 0.5A / 220vac:
(Pulse on detect – normally de-energised)
(Pulse on undetect – normally de-energised)
(Presence mode  – normally de-energised)
(Loop fault mode   – normally energised)
Response Time
Default approximately 120ms after the vehicle enters loop.
Adjustable 50ms to 9.00 seconds
Indicators
LED indicators show: detect state
Detector Tuning Range
15—1500uH
Loop Frequency
Approx. 23 -130 KHz
Power Fail Memory
20 Seconds
Environmental Tracking
Automatic Compensation
Protection
Loop isolation transformer with zener diodes and gas discharge tube.
Connector
11 Pin connector on the rear of the unit.
Operating Temperature
-20°C to 70°C

 

For more information download our product datasheet.