Engineering at the Edge: Nidec Powers Next-Gen Ship Loading at Dalrymple Bay
In a bold leap forward for offshore industrial automation, Nidec Drives Africa has successfully delivered a cutting-edge Variable Frequency Drive (VFD) Motor Control Centre (MCC) for the new SL1A Ship Loader at Dalrymple Bay Terminal in Mackay, Australia. Situated nearly four kilometres out to sea, the project demanded a solution that could withstand the harsh marine environment while meeting the highest standards of safety and efficiency.
Offshore Innovation Meets Real-World Complexity
The SL1A Ship Loader faced significant engineering challenges, including the need to manage up to 1 MW of regenerative energy while connected to the 415Vac Australian grid. The system also had to seamlessly switch to a diesel generator power source, requiring dynamic braking capabilities and advanced redundancy. Safety was paramount, with every circuit designed to meet Safety Integrity Level 3 (SIL 3) standards.
Over an intensive 18-week period, Nidec’s team designed and built a robust, IP44-rated MCC to “Form 4a” construction standards. The 8.2-tonne assembly featured six segregated shipping sections, including dual Active Front End (AFE) units and a suite of motoring VFDs. Powered by Control Techniques’ M702 VFDs with dual Safe Torque Off (STO) functionality, the system ensured full SIL 3 compliance and streamlined communications via Ethernet/IP.
Efficiency, Safety, and Scalability Delivered
The result is a modular, future-ready MCC that enhances operational safety, optimises energy use, and simplifies maintenance. Withdrawable sliders and door-mounted controls allow for quick diagnostics and reduced downtime, while the system’s scalable design supports a wide range of ship loader functions—from boom winches and long travel drives to hose and cable reels.
This project stands as a testament to Nidec Drives Africa’s engineering excellence and its ability to redefine offshore automation. By marrying precision with innovation, the company has set a new benchmark for ship loading technology at the edge of the sea.