Vehicle Loop Detector with 20 kHz to 170 kHz Frequency Range 100ms Reaction Time and 240V/5A Output Relays for Auto Gates and RFID Parking Access Control

The detector must be installed in a convenient weatherproof location as close to the loop as possible. Choose an installation location away from heat sources and maintain at least 10mm distance from other devices (do not mount directly against cabinet walls). Proper loop configuration and detector installation ensure reliable inductive loop detection system performance. Key loop parameters include loop configuration, size, number of turns, and installation methods (refer to "Loop Installation Guide" for details).

Supply Voltage: 230V AC, 115V AC, 24V DC/AC, 12V DC/AC (refer to detector label)
Voltage Tolerance AC: +10% / -15%
Voltage Tolerance DC: ±15%
Power Consumption: 4.5VA
Output Relays: 240V/5A
Operating Temperature: -20°C to +65°C
Storage Temperature: -40°C to +85°C
Frequency Range: 20 kHz to 170 kHz
Reaction Time: 10ms
Signal Holding Time: Unlimited / Limited to 10 minutes when loop is permanently covered
Sensitivity: Adjustable in 4 increments
Loop Inductance: 50μH to 1000μH (total loop plus connection wiring), ideal range 100μH to 300μH
Loop Connection Wiring: Maximum length 20 meters, twisted at least 20 times per meter
Housing Dimensions: 78x40x108 mm (L x W x H)

During detector tuning, both green Channel LED and red Power LED illuminate for approximately 2 seconds, after which the green LED turns off. A flashing Channel LED indicates a loop fault. The green channel LED illuminates when a vehicle is detected passing over the inductive loop. The red Power LED remains on continuously to indicate unit power status.

Frequency can be altered to eliminate interference between neighboring wire loops or loop detectors.

Sensitivity allows selective detection based on inductance change necessary to produce output. Four sensitivity selections are available via DIP3 and DIP4 switches.

Selected via DIP5 switch: OFF - Disabled, ON - Enabled. When enabled, sensitivity boosts to maximum upon vehicle detection and maintains this level during vehicle presence over the loop. Sensitivity reverts to pre-selected level after vehicle departure.

Activated by setting DIP6 Switch to "ON" position to eliminate environmental interference. In filter mode, reaction time is delayed and sensitivity is reduced. Typically disabled by setting DIP6 Switch to "OFF" position.

DIP7 OFF: Relay1 and Relay2 energize when vehicle is detected passing over loop, de-energize upon departure. DIP7 ON: Relay2 energizes on detection, de-energizes on departure, with Relay1 energizing for 500ms after 500ms delay.

Presence time can be set to permanent or limited presence. In permanent presence mode, detector continuously compensates for environmental changes during vehicle presence. Configured via DIP8 Switch: OFF - Limited Presence (10 minutes), ON - Permanent Presence.

Detector automatically tunes to inductive loop upon power application (initial installation or after power interruption). Manual retuning via momentary RESET switch operation initiates automatic tuning cycle after switch changes or detector relocation.