SCADA modernization has become essential for utilities, industries, and public facilities seeking higher operational reliability and lower maintenance costs. This case study illustrates how upgrading a legacy SCADA system significantly improved operational efficiency and reduced downtime by 50%.
Legacy SCADA No Longer Meets Operational Needs
Prior to modernization, the facility’s SCADA system faced several major issues:
- Outdated HMI screens that were difficult to use
- Many sensors were offline or unmonitored
- No priority-based alarm system for critical events
- Limited historical data capability
- Poor compatibility with new devices
- Operators frequently needed to verify conditions manually in the field
As a result:
- Slow response to system faults
- Undetected equipment failures
- Uncontrolled energy consumption
- Increased operational costs
A new, reliable, and adaptive SCADA system was urgently needed.
Solution: Integrated SCADA Upgrade by WSI
WSI executed a comprehensive SCADA modernization plan, covering hardware, software, new HMI design, and integration with modern industrial protocols.
1. SCADA Architecture Re-Engineering
The modernization included:
- Redundant SCADA servers to eliminate downtime
- Integration of both new and existing PLCs into a unified platform
- Communication via Modbus, OPC UA, and MQTT
- Clean, structured historian database for analysis and reporting
The new architecture ensures system stability and scalability.
2. Redesigned HMI with Professional & Intuitive UI
WSI developed a new-generation HMI featuring:
- Clear process mimic diagrams
- ISA-standard color coding for status & alarms
- Fast navigation between process screens
- Real-time KPI dashboards (pressure, flow, levels, energy)
Operators can now understand system conditions within seconds, not minutes.
3. Intelligent Alarm System
A priority-based alarm structure was implemented:
- Critical: immediate risk of major failure
- High: requires prompt operator action
- Moderate: routine monitoring
- Low: informational
Emergency alarms are automatically sent via SMS/Telegram to supervisors.
4. Historical Trends & Automated Reporting
The upgraded SCADA enables:
- Long-term historical trends (1–5 years)
- Auto-generated weekly and monthly reports
- Performance analysis for pumps, energy usage, and pipeline pressure
- Export to Excel/PDF
Decision-making is now fully data-driven.
Results: Significant Operational Improvements
Performance Indicator | Before Modernization | After Modernization
System Interruptions | Frequent | Reduced by 50%
Operator Response Time | Slow | < 3 minutes via alerts
Data Availability | Limited | 100% real-time
Monitoring Accuracy | Low | Highly accurate
Energy Efficiency | Poor | Improved by up to 15%
Downtime | High | Significant reduction
The new SCADA system delivers more stable and responsive operations across the facility.
Additional Benefits
Seamless Integration of Old & New Devices
All PLCs, sensors, and new panels operate within one unified system.
Reduced Operator Workload
Field verification is no longer needed for routine monitoring.
Complete System Visibility
Pumps, valves, pressures, flowrates, and tank levels can be monitored centrally.
Higher Operational Security
User management, password encryption, and audit logs ensure safe system access.
WSI’s SCADA Deployment Experience
WSI has implemented SCADA solutions for:
- Water treatment systems (Kalidendeng, Kedung Putri, PAM Jaya, WTJJ)
- BBWS gate automation
- IoT flood early warning systems
- Airport utility systems (I Gusti Ngurah Rai International Airport)
- Water supply automation in Adaro mining operations
This extensive experience ensures robust and successful SCADA upgrades across diverse sectors.
A Modern Blueprint for Industry & Utility SCADA
SCADA modernization delivers:
- Faster processes
- Zero human error
- Accurate real-time data
- Improved energy efficiency
- Higher operational safety
SCADA is no longer optional — it is a strategic requirement for digital transformation.
Ready to Modernize Your SCADA System?
WSI provides:
- SCADA architecture design
- PLC upgrade & multi-vendor integration
- Professional HMI design
- Historian & analytics
- IoT & cloud connectivity
Visit wsi.co.id for a free consultation.
