Vehicle Loop Detector for gate

PD-132 Inductive Vehicle Single Loop Detector for Automatic Gate opener barrier gate Traffic Inductive Vehicle access

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Install Detector

The detector must be installed in a convenient weatherproof location as close to the loop as possible. Installation location must choose to stay away from the heat source, it around other devices must maintain a distance of at least 10mm (mustn’t fix cling to the cabinet). A correct loop configuration and detector installation will ensure a successful inductive loop detection system. Loop of several important parameters include: loop figure, size, and turns, install methods (details as “Loop installation guide”).

Operation and Indication

While the detector is tuning, the green Channel LED and red Power LED will be turn on. It remain about 2 seconds, then the green LED turn off. If a loop fault exists the Channel LED will come on and flash indicating a fault. If the fault is self-healing the detector will continue to operate.The green channel LED will also glow whenever a vehicle is detected passing over the inductive loop. The red Power LED at the top of the unit will remain on to indicate that the unit is powered.

Frequency

To eliminate interference of two neighbouring wire loops or loop detectors, the frequency can be altered.

Sensitivity

The sensitivity of the detector allows the detector to be selective as to the change of inductance necessary to produce an output. There are four sensitivity selections and are set as follows by DIP3 and DIP4 Switch.

Automatic Sensitivity Boost

Automatic sensitivity boost is selected by DIP5 switch on the front of the enclosure and is set

as follows: OFF - Disabled, ON – Enabled.

Automatic sensitivity boost causes the sensitivity to be boosted to a maximum on detection

on the vehicle, and maintained at this level during the presence of the vehicle over the loop. When

the vehicle departs the loop and detection is lost the sensitivity reverts to the pre-selected level.

Filter

To eliminate interference of the bad environment, the filter mode is activated by setting the DIP6 Switch to “ON” site. In this mode, the reaction time of the detector is delayed, and the sensitivity is reduced. Usually, the filter mode is disabled by setting the DIP6 Switch to “OFF” site.

【Attention】 If the detector isn’t working normally, you must check the loop and wiring at first, and then alter the frequency or the sensitivity. At last, try to set it to filter mode.

Output Relay

If DIP7 is “OFF” site, when a vehicle is detected passing over the inductive loop, the relay1 and relay2 are energized; When the vehicle is detected departing the loop, the relay1 and relay2 are de-energized.If DIP7 is “ON” site, when a vehicle is detected passing over the loop, the relay2 is energized;When the vehicle is detected departing the loop, relay2 is de-energized , and delay 500 ms, the relay1 is energized for 500 ms.

Presence Time

The presence time may be set to permanent presence or to limited presence. In permanent presence mode the detector will continuously compensate for all environmental changes whilst there is a vehicle present over the loop, the presence mode is set with DIP8 Switch and is

configured as follows: OFF：Limited Presence ( 10 minutes), ON：Permanent Presence

Reset Switch

The detector automatically tunes to the inductive loop connected to it when the power is applied, whether on initial installation or after any break in power supply. Should it be necessary to retune the detector, as may be required after changing any of the switches or after moving the detector from one installation to another, momentary operation of the RESET switch will initiate the automatic tuning cycle.