1. Application

Loop detectors are used wherever vehicles have to be detected. Like monitoring and safe guarding access ways to counting vehicles. The output signal can be used for controlling door and gate drive mechanisms, operating barriers, controlling traffic light systems in car parks or activating card dispensers in car parks.

2. Functional description
The CY-20H is a single channel inductive loop detectors. The principle is based on a change in the inductance within the loop which is caused by the metallic components of passing vehicles. The changes are picked up and evaluated by a microprocessor. Ease of use thanks to automatic calibration when the operating voltage is applied.

3. VehicleLoopDetector Technical Data

 

Supply voltage:	230V AC , 115V AC,24VDC/AC,12V DC/AC ( See the label on the detector)
Voltage tolerance AC	+10% / -15%
Voltage tolerance DC	±15%
Power Consumption	4.5VA
Output relays	240V/5A
Operating temperature	-220°C to +65°C
Storage temperature	-40°C to +85°C
Frequency range	20 kHz to 170 kHz
Reaction time	100ms
Signal holding time	Unlimited
Sensitivity	Adjustable in 3 increments
Loop inductance	Total loop plus connection wiring:  50μH to 1000μH. Ideal is 100μH to 300μH
Loop connection wiring	Maximum length 20 meters,  twisted at least 20 times per meter
Size of Housing	78x40x108 mm (L x W x H)

3.1 Frequency
The frequency can be altered by means of DIP6-Switch.
1. to eliminate interference of two neighboring wire loops
2. to eliminate interference of two neighboring loop detectors
3. to eliminate interference of two neighboring distribution cables (loop detectors)
Attention: When using more than 2 Detectors, please to select different frequencies, and screened cables for Detector or connecting cables widely separated