Civil Foundation and Structural Placement Requirements
Installing the Neptune NCRB K4-6 crash-rated electro-hydraulic boom barrier gate requires rigorous civil ground preparation. Because the barrier is engineered to absorb severe kinetic energy and halt hostile vehicles by destroying the vehicle's front suspension, structural anchorage into a reinforced deep concrete foundation is mandatory. The civil foundation must accommodate the gross equipment mass of approximately 1600 kg along with dynamic loads transferred during an impact.
Position the gray IP67-rated housing cabinet on a level foundation plinth prepared to receive the 900 mm (L) x 900 mm (W) x 1400 mm (H) cabinet footprint. The foundation design must incorporate embedded steel anchor assemblies rated for heavy structural steelwork (fabricated from S235, RAEX250-Quality 37 minimum, or galvanised FE 360). Alignment must ensure the 120 mm x 60 mm boom arm profile maintains a nominal centerline height of 1000 mm from finished road level (within the acceptable 800 mm to 1050 mm barrier height range) across the entire clear roadway span, which can extend from 3000 mm up to 6000 mm.
Electrical Infrastructure and Hydraulic Drive Integration
The electro-hydraulic drive unit operates on an incoming 3-phase industrial power supply rated at 380V–420V AC. Ensure the electrical feeding network delivers a continuous current capacity between 6 and 8 Amperes. For the 5-meter and 6-meter boom configurations of the NCRB K4-6, the hydraulic pump motor requires 2000 Watts at 1500 rpm (1500 Watts is utilized on 4-meter configurations). Cabling must be routed through sealed conduits terminating inside the IP67 enclosure, which provides continuous ventilation to maintain operational stability between -20°C and +65°C and relative humidity levels up to 95%.
For auxiliary backup systems, the power pack supports integration with dedicated UPS units or DC backup motor circuits powered by batteries (they are not included). In instances of primary power disruption, an optional manual hand pump can be utilized for mechanical raising and lowering of the heavy-duty boom arm.
End-Position Sensing and Motion Calibration
Mechanical linkage between the internal hydraulic cylinder and moving barrier components utilizes heavy-duty hardened steel or AISI 303 stainless steel hinges operating on bronze bearings. End-of-travel limits are electronically registered using factory-fitted proximity switches that monitor and confirm the exact fully raised and lowered positions of the boom.
System operational speeds are governed by an onboard microprocessor PLC. Commissioning technicians must program the motion profiles using the 1 to 20 electronic motion adjustment levels, allowing smooth acceleration and deceleration dampening. Depending on boom length and site configuration, raise and lower operating cycles must be calibrated between 4 and 6 seconds under continuous 100% duty cycle testing.
Control Wiring and Safety Peripheral Interfacing
The system package includes a desktop push-button station that wires directly to the PLC terminal board, providing dedicated contacts for raise, lower, emergency stop, and key-operated isolation functions. The PLC input/output interface accommodates third-party access control peripherals, including RFID proximity readers, biometric scanners (such as fingerprint or hand geometry devices), radio control receivers, and manual on/off key switches.
Safety device integration is executed via auxiliary terminals on the microprocessor controller. Prior to putting the unit into active service, connect and verify all detection peripherals across the vehicle transit lane: safety photocells, inductive ground loop detectors, red/green traffic signal indicators (compatible with an optional 2-meter powder-coated steel mounting post), ANPR cameras, and flashing warning beacons.
Installation Technical Parameters
| Parameter | Specification / Requirement |
|---|---|
| Cabinet Footprint Dimensions | 900 mm (L) x 900 mm (W) x 1400 mm (H) |
| Boom Profile & Clear Opening | 120 mm x 60 mm; spans 3000 mm to 6000 mm |
| Arm Centerline Elevation | 1000 mm above ground level (range 800 mm to 1050 mm) |
| Total Equipment Mass | Approximately 1600 kg (1100–1600 kg range) |
| Main Power Requirement | 380V–420V AC, 3-Phase, 6 to 8 A |
| HPU Motor Rating | 2000 W at 1500 rpm (5 m & 6 m models) |
| Enclosure Protection & Climate | IP67 with continuous ventilation; -20°C to +65°C, ≤95% RH |
| Operating Cycle Time | 4 to 6 seconds; 1 to 20 electronic motion adjustment levels |
| Limit Detection & Bearings | Integrated proximity switches; bronze bearings |
