System Compatibility and Access Control Integration

The Neptune NCRB K4-6 crash-rated electro-hydraulic boom barrier gate is engineered around a microprocessor-controlled Programmable Logic Controller (PLC) architecture equipped with auxiliary input and output (I/O) terminals. This electronic configuration enables direct low-voltage interfacing with standard industrial vehicle access control peripherals, security screening systems, and gate automation infrastructure without requiring external protocol converters.

Access Control and Identification System Interfacing

The internal PLC onboard the Neptune NCRB K4-6 provides dedicated auxiliary I/O channels designed to accept dry contact and relay triggers from a broad spectrum of electronic entry hardware. Facility access networks can interface smoothly using the following input sources:

• Card Readers: Standard contact and contactless RFID card readers can be wired directly to the PLC trigger contacts to actuate automatic open and close barrier sequences.
• Biometric Scanners: Supports hardwired relay outputs from biometric authentication terminals, including fingerprint readers and hand geometry scanners.
• Radio Controls: Remote wireless radio transmitters and receiver modules integrate directly with the controller for wireless barrier operation.
• Key Switches and Desktop Stations: Compatible with perimeter on/off key switches as well as the supplied desktop push-button station, which features discrete control buttons for barrier raise, lower, key-operated functions, and emergency stop overrides.

Safety Sensing and Vehicle Detection Compatibility

To prevent vehicular impacts and ensure reliable operation across continuous 100% duty cycles, the controller features dedicated loop and sensor monitoring circuits. The barrier system integrates directly with:

• Inductive Vehicle Loop Detectors: Dual-channel and single-channel inductive ground loop detectors connect to the controller to provide vehicle presence sensing, auto-close triggers, and anti-tailgating interlocks.
• Safety Photocells: Direct input wiring for active infrared safety photocell pairs mounted across the roadway to prevent the 120 mm x 60 mm boom beam from lowering on stationary vehicles.
• Position Limit Sensors: The barrier assembly includes integrated proximity switches that continuously monitor and feed back physical open and closed arm positions to the PLC logic.

Traffic Signaling and ANPR Integration

The Neptune NCRB K4-6 provides coordinated control outputs for vehicle movement control and optical monitoring equipment:

• Traffic Lights: Operates switching circuits for red/green LED traffic signal lights. For site planning, an optional 2-meter electrostatically powder-coated steel mounting post is available to install these signal lights at optimal driver viewing elevation.
• Visual Warning Devices: Dedicated outputs support flashing beacons and warning lights that activate during arm transit (operating speed of 4 to 6 seconds).
• ANPR Cameras: Fully compatible with Automatic Number Plate Recognition (ANPR) systems, allowing automated vehicle identification cameras to trigger barrier actuation via standard relay outputs.

Electrical Infrastructure and Backup Power Compatibility

The standard drive unit consists of an internal electro-hydraulic power pack housed in an IP67 ventilated cabinet (900 mm L x 900 mm W x 1400 mm H). The motor requires a 380V–420V 3-Phase AC power supply, consuming 6 to 8 Amperes with a motor power rating of 2000 Watts at 1500 rpm for 5-meter to 6-meter arm spans. For facilities requiring uninterrupted security during primary grid outages, the system supports connection to Uninterruptible Power Supply (UPS) systems, DC motor backup systems configured with backup batteries (they are not included), or emergency physical bypass via an optional manual hydraulic hand pump.