Single Channel Loop Detector LD102
Single Channel Loop Detector
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Single Channel Loop Detector 12 or 24 volt AC/DC
The LD102 is a single channel inductive loop detector. The use of microprocessor and surface mount technology enables a large number of functions to be incorporated into a small package. The LD102 is compatible with most single channel detectors on the market and is easy to set-up and install.
Typical applications in the parking and access control environments are safety loops, arming loops and entry or exit loops.
Standard features of the detector are :
· Reset Switch.
Pressing 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.
· Selectable Pulse Time.
This feature sets the length of time that the pulse relay will be energized. 1 Second or 0.2 Second.
· Pulse Relay Selection.
The Pulse relay may be configured to energize on detection of a vehicle or when the vehicle leaves the loop.
· Sensitivity Boost.
This feature sets the undetect level to maximum sensitivity and is used to prevent loss of detection of high-bed vehicles.
· Switch selectable Sensitivity.
The detect sensitivity is the minimum change in inductance required to produce a detect output. (%ΔL/L) Eight sensitivity settings are available on the switches to allow flexibility in configuration and application.
· Switch selectable Frequency.
The frequency of the loop is determined by the inductance of the loop and the frequency switch setting. If the frequency switch is on, the frequency is reduced. It may be necessary to change the frequency to prevent cross-talk between adjacent loops.
· Permanent Presence Option.
This feature ensures detection of the vehicle will be maintained when the vehicle is parked over the loop for extended periods.
· Filter Option.
This option is used to provide a delay of 2 Seconds between detection of the vehicle and switching of the output relay. This delay is normally used to prevent false detection of small or fast moving objects.
· Selectable Extend Time.
When switched on this feature extends the output for 2 Seconds.
· Loop Fault Indicator.
This LED Indicator is illuminated when the loop is either open circuit or short circuit and is used to give a visual indication of a faulty loop.
· Power Indicator.
This LED Indicator illuminates when power is present.
· Detect Indicator.
This LED Indicator is illuminated when there is a vehicle over the loop or the loop is faulty. This LED can also be used to determine the loop frequency. On reset, count the number of times the LED flashes. Multiply this number by 10KHz.For example: if the LED flashes 6 times, then the loop frequency is between 60KHz and 70KHz.
1. POWER REQUIREMENT:
2. PRESENCE RELAY OUTPUT:
This output has both a normally open and normally closed relay contact rated at 0.5A/220VAC.
3. PULSE RELAY OUTPUT:
This output is a normally open relay contact rated at 0.5A/220VAC. This relay may be configured to operate on entry or exit from the loop.
LED indicator's show: Power, Detect state and Loop Fault.
5. DETECTOR TUNING RANGE:
15 - 1500 uH.
Two step adjustable.
Loop isolation transformer with lightening protection.
11 Pin Connector on rear of unit.
80mm (HIGH) X 40mm (WIDE) X 79mm (DEEP)
10. OPERATING TEMPERATURE:
-40°C to +80°C
11. STORAGE TEMPERATURE:
-40°C to +85°C
up to 95% non condensing
13. Complies with EMC Directive 89/336/EEC and Low Voltage Equipment Directive 73/23/EEC.
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