Delta AH500

Delta AH500 PLC and DiaView SCADA system at a ruby mine in Mozambique

In the heart of northern Mozambique, one of the world’s most significant ruby mines faced growing challenges in maintaining efficient and safe operations across its mineral extraction and processing facilities. Manual monitoring, inconsistent process control, and limited data visibility led to frequent downtime and reduced throughput.

To address these challenges, the mine partnered with an automation integrator to deploy a Delta AH500 series PLC and DiaView SCADA system across critical production areas — from ore crushing and washing to sorting and water recycling.

Customer Challenge:

•Automate key mining and processing operations.

•Reduce downtime and manual interventions.

•Improve visibility into equipment status and process data.

•Ensure scalability for future expansion.

•Enhance operator safety through better alarm systems and control logic.

Our Solution:

Hardware: Delta AH500 PLC

•Modular design allowed distributed control of different units (crushing plant, washing plant, sorter line).

•High-speed data processing and real-time communication between I/O modules.

•Integrated redundancy for critical control sections.

Software: Delta DiaView SCADA

•Real-time data acquisition from AH500 PLCs.

•Custom HMI dashboards for each operational unit.

•Alarm management, historical trending, and remote diagnostics.

•Web-based access for supervisors and maintenance teams.

Key Functionalities Deployed

•Automated start/stop sequencing of conveyor belts and crushers.

•Monitoring of water usage and recycling via PID control loops.

•Temperature, vibration, and motor current monitoring on critical assets.

•Automated shutdown in case of abnormal conditions to prevent damage.

Outcome & Impact

•45% increase in plant throughput due to optimized sequencing and fewer stoppages.

•70% reduction in manual labor, allowing reallocation of staff to more strategic roles.

•Return on Investment (ROI) achieved within 9 months of commissioning.

Conclusion

“The new automation system has transformed our operations. We now identify and resolve issues before they become serious problems. The Delta AH500 PLC and DiaView SCADA proved to be reliable and easy to maintain — a real game-changer for us.”
— Operations Manager, Ruby Mining Site, Mozambique