LD-200 Two Channel Parking Loop Detector with Direction Recognition Presence and Pulse Relay Outputs

The LD-200 combines two parking-loop inputs with configurable relay logic for presence, pulse, and vehicle-direction applications. This detector is designed for barrier gates and parking-control cabinets where CH1 and CH2 require monitoring by a single device with different output behavior based on lane sequence.

The relay configuration is a key strength of this product. In independent mode, both channels function as separate vehicle-presence detectors. In pulse modes, the corresponding relay produces output when vehicles enter or leave loops. In directional modes, the detector uses CH1 and CH2 activation sequence to determine travel direction and generate programmed relay responses.

This makes the LD-200 ideal for installers needing one dual-channel detector to cover multiple parking functions instead of selecting different detectors for various lane designs.

• Barrier opening request
• Vehicle presence monitoring
• Passage confirmation
• Entry/exit direction logic
• Two-zone detection
• Vehicle-flow signal generation

For directional detection, two separate loops are aligned with the vehicle path and spaced approximately 1 meter apart. Loop turns are selected according to total loop perimeter. Installers should verify both loops separately, select suitable sensitivity, and choose different frequency settings when nearby loops create interference.

• Power LED (RED): Illuminates to indicate "Power ON"
• CH1 Detection LED:
  • Steady On: Vehicle detection
  • Slow Blinking: Loop short circuit or insufficient twists
  • Fast Blinking: Loop open circuit or excessive twists
• CH2 Detection LED:
  • Steady On: Vehicle detection
  • Slow Blinking: Loop short circuit or insufficient twists
  • Fast Blinking: Loop open circuit or excessive twists

Sensitivity and frequency adjustment is facilitated through 7-way and 10-way dip switch settings:

• 8 different sensitivity settings available via dip switch configuration
• Dip switches 6, 7, and 8 govern CH1 sensitivity (0.8 to 0.015)
• Dip switches 3, 4, and 5 control CH2 sensitivity (0.8 to 0.015)

Switch 1 (S1) - Channel 1 Loop Function Selection:

• DIP 1 & DIP 2: Special Sensitivity Increase For Both Trailer (Both Channels)
• D3, D4, D5 and Switch 2 D1, D2: Special Functions (Mode1, 2, 3 Direction Detection. Mode 4, 5, 6 Normal mode)
• D6 & D7 & D8 and Switch 2 D3 & D4 & D5: CH1 and CH2 Sensitivity Selection (Eight Levels)
• D9 & D10 and Switch2 D6, D7: Frequency Selection (20 K to 100 KHz)

• Coil cutting size should be rectangle: length 1.0 to 2.0 meters, width 0.8 to 1.2 meters
• Avoid right angles at corners as much as possible
• Use ferromagnetic wires for induction coil, total length up to 500 meters
• Keep product plug and socket in vertical direction during installation

The JUTAI LD200/202 double-channel vehicle loop detector series, equipped with direction recognition function, is ideal for single-channel entry and exit scenarios when integrated with:

• JUTAI One door controller (Model: AC-11)
• JUTAI gate barrier (Model: BR-110)
• JUTAI long-range RFID reader (Model: PUHF-9)
• High-temperature resistance loop coils (Model: JTHT-11)

Direction Recognition: The Direction Recognition Function ensures the double channels loop detector does not trigger the signal again when the car passes another UHF reader, recording only entry or exit records in the system.

The JUTAI LD-200/202 Double Channel Loop Detector can also function as two independent single-channel loop detectors, suitable for standard one-in and one-out parking lots. This configuration provides cost-saving benefits by reducing hardware costs associated with using separate detectors for each function.