170KHz 4 Increments Adjustable Vehicle Detector ABS PD132

Multiple Supply Voltage Sensitivity Adjustable in 4 increments Vehicle Detector PD132

About vehicle loop detector model PD132

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 (must not installation close with boxes wall). A correct loop configuration and detector installation will
ensure a successful inductive loop detection system.

Loop of several important parameters include: loop figure, size, turns, install methods.

Technical Data

1. Supply voltage: 230V AC , 115V AC, 24V DC/AC, 12V DC/AC ( See the label on the detector)

2. Voltage tolerance AC: +10% / -15%

3. Voltage tolerance DC: ±15%

4. Power Consumption: 4.5VA Output relays: 240V/5A

5. Operating temperature: -20°C to +65°C

6. Storage temperature: -40°C to +85°C

7. Frequency range: 20 kHz to 170 kHz

8. Reaction time: 10ms Signal holding time: Unlimited / limited when loop is permanently covered 10 minutes

9. Sensitivity: Adjustable in 4 increments

10. Loop inductance: Total loop plus connection wiring: 50μH to 1000μH. Ideal is 100μH to 300μH

11. Loop connection wiring: Maximum length 20 meters, twisted at least 20 times per meter

12. Size of Housing: 78x40x108 mm (L x W x H)

Main Features:

1) Reset Switch : The reset switch enables the detector to be manually reset during commissioning and testing . This results in the detector re-tuning the sensing loop and becoming ready for vehicle detection ;
2) Selectable Pulse Time : This feature sets the length of time that the pulse relay will be energized for 1 Second or 0.5 Seconds ;
3) Pulse Relay Selection : The Pulse Relay may be configured to energize on detection of a vehicle or when the vehicle leaves the loop ;
4) Sensitivity Boost : This feature sets the undetect level to maximum sensitivity and is used to prevent loss of detection of high-bed vehicles ;
5) Switch Selectable Sensibility : 4 sensitivity setting are available on the switches to allow flexibility in configuration ;
6) Switch Selectable Frequency : 4 frequency settings are available to prevent cross-talk between adjacent loops ;
7) Filter Option : This option is used to provide a delay between detection of the vehicle and switchiing of the output relay . This relay is normally used to prevent false detection of small or fast moving objects ;
8) Permanent Presence Option : This feature ensure detection of the vehicle will be maintained when the vehicle is parked over the loop for extended periods .

Technical parameters of Loop Detector

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.

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