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1. INTRODUCTION
The TD136 Enhanced Vehicle Detector is a single channel microprocessor based detector designed specifically for traffic control applications. The TD136 Enhanced Vehicle Detector has been designed using the most up-to-date technology in order to meet the requirements of a vast number of traffic applications in terms of operating conditions and functional options available to the user.
The primary function of the detector is to detect vehicle presence by means of an inductance change caused by the vehicle passing over a wire loop buried under the road surface. The detector has been designed for ease of installation and convenience.
The detector has been designed for ease of installation and convenience. The various modes are selected by changing the positions of the switch on the front of the unit.
The switches allow for different loop frequency settings, sensitivity settings and mode settings.
The TD136 Enhanced Vehicle Detector provides visual output (LED) on the front of the enclosure and relay change-over contacts are taken on the 11 pin connector at the rear of the enclosure. The LED indicates the power has been applied to the unit, that a vehicle is present over the loop and if there is a fault on the loop.
The Presence relay is fail-safe and will close on a vehicle detect or in the event of power failure. The TD136
Enhanced Vehicle Detector is also provided with an integral fault relay, which will provide an output in the event of a loop fault condition.
Related Documents:
TD136 Enhanced Vehicle Detector Data Sheet Document No. 305DS0002
Installation Leaflet Document No. 300LF0006
Diagnostic Unit DU100 User Manual Document No. 895UM0001
301UM0031_01 TD136 Enhanced Vehicle Detector User Manual Page: 5 of 29
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