Key Takeaways
- SCADA connects field devices to a control center to transmit, process, and display operational data via an HMI.
- Centralized parameter monitoring helps operators respond to abnormal conditions through alarms or notifications without inspecting the equipment directly.
- SCADA historical data can support operational evaluations, including incident investigation, pattern identification in parameter changes, and equipment performance assessment.
Have you ever wondered how operators know when a machine is malfunctioning without visiting every operational point in person? When processes run continuously, equipment conditions must be monitored quickly so teams can address disruptions immediately.
This need requires a system that can monitor operational conditions while supporting more centralized energy management. One technology that can support these needs is the SCADA system, which this article will discuss further. Read on to find out more!
What Is SCADA System?
A SCADA (Supervisory Control and Data Acquisition) system enables companies to monitor, collect, and process data from various sensors and equipment through a single control center.
As applied, SCADA connects field devices to a control center. Common devices include Programmable Logic Controllers (PLCs), Remote Terminal Units (RTUs), and Human-Machine Interfaces (HMIs).
Field devices read or relay information from ongoing processes. After that, the SCADA system receives this data, processes it, and displays it in a way that is simpler for operators to comprehend.
This way, operators can monitor operating conditions from the control center without visiting each piece of equipment in person. Operators can also use the available information to identify changes in conditions and determine necessary actions.
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Functions of SCADA
In industrial operations, even minor changes in process parameters can affect equipment performance and operational efficiency. Therefore, companies need a system that provides real-time, centralized information on field conditions.
SCADA performs several functions to support those needs, including:
- Real-time process monitoring: SCADA helps operators view various operational parameters, such as temperature, pressure, flow, liquid level, and equipment status. This information provides an overview of conditions without relying on manual checkpoints.
- Collecting and storing data: SCADA collects data from sensors, PLCs, RTUs, and other field devices. This information can be stored as historical data, giving the company a record of operational conditions to review later.
- Detecting abnormal conditions: When a parameter exceeds a predetermined limit, SCADA can trigger an alarm for the operator. For example, a rise in pressure or temperature outside the operating range can be detected immediately, allowing inspection before the condition further disrupts the process.
- Monitoring and controlling processes: SCADA not only displays information but also supports monitoring and control functions for connected devices. If the system configuration allows, operators can issue commands from the control center as needed.
How the SCADA System Works
SCADA operations begin with field devices. Sensors monitor process conditions, while devices such as PLCs or RTUs receive, process, and forward this data to the SCADA system.
So, what is the workflow of a SCADA system? Data collected from the field is transmitted via a communication network to the SCADA system. Once received, the system processes the information and displays it through an HMI so operators can view equipment status and ongoing processes.
For example, a sensor detects a temperature change in a piece of equipment. That measurement is relayed to a PLC or RTU, then sent to the SCADA system. Operators can view changes in these parameters via the HMI display without going directly to the equipment’s location.
If the measured value exceeds the operating limits, the system can trigger an alarm or notification. Then, the operator can check the relevant conditions and determine the appropriate action in accordance with operational procedures.
Later, the collected data can also be stored for historical reference. These records help companies trace specific incidents, identify patterns in parameter changes, or evaluate equipment performance over a period.
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Industries That Use SCADA Systems
SCADA systems are widely used in industries with complex operational systems that require continuous equipment monitoring. Here are some industries that utilize SCADA systems in their operations:
1. Energy Industry
In the energy industry, SCADA monitors and oversees electrical networks and equipment from a central control center. One company that has implemented this system is PT Krakatau Chandra Energi (KCE).
At KCE, technologies such as SCADA play a crucial role in ensuring the reliability, efficiency, and safety of industrial electrical systems through sensors distributed across facilities and remote stations.
This technology not only provides full visibility into KCE’s power grid but also accelerates response times and enables more measurable operational decision-making.
2. Oil and Gas Industry
The oil and gas industry has numerous assets spread across various locations, such as pipeline networks, pumping stations, storage facilities, and production facilities. SCADA can help operators monitor parameters such as pressure, flow, and equipment conditions from a central control center.
3. Manufacturing Industry
In the manufacturing industry, SCADA is used to monitor the production process and the equipment involved. This system collects data from machines and control devices, giving operators a centralized process overview.
Industrial Monitoring Technology and Operational Solutions to Support Industrial Operations!
SCADA implementation is a critical consideration for industrial businesses to support the monitoring and management of industrial electrical systems. By monitoring operational conditions and equipment data, companies can help operators make more structured decisions based on system conditions.
System monitoring and energy management are crucial for ensuring smooth operations. As a subsidiary of PT Chandra Daya Investasi Tbk (CDI), PT Krakatau Chandra Energi (KCE) provides reliable power solutions that meet the electricity needs of various sectors, ranging from industry and business to government.
To date, KCE has served over 200 customers across these sectors as well as over 1,500 residential customers. This support is strengthened by its 120 MW Gas-Fired Combined Cycle Power Plant (CCPP).
This combination of facilities and services is part of KCE’s efforts to provide a reliable energy supply to support customers’ operational needs.
With the spirit of #YourGrowthPartner, CDI and KCE continue to deliver energy solutions that support the industry's needs and growth. Do not hesitate to entrust your company’s energy needs to CDI and KCE!
Contact us to learn more about KCE’s electricity supply services and discuss your company’s energy needs.
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Frequently Asked Questions (FAQ)
Still have questions about SCADA systems and their application in industrial operations? Find the answers in the following FAQ:
1. What Is the Difference Between PLC and SCADA?
A PLC automatically controls machines or processes based on programs and inputs from field devices. Meanwhile, SCADA monitors, collects data, and oversees operations and equipment from a centralized system.
2. What Is SCADA Used For?
SCADA is used to monitor and oversee operations and equipment conditions through data collected from field devices. This system can also help operators detect changes in conditions and malfunctions more quickly.
3. What Is the Difference Between HMI and SCADA?
HMI is an interface that allows operators to interact with machines or processes, whereas SCADA has a broader scope for supervising and managing data from various devices and processes within a system.