The critical control system requires the configuration of an uninterruptible power supply (UPS) to prevent transient power outages that may cause controller crashes.
The Industrial Internet of Things (IIoT) relies on fast and accurate communication. The critical control system cannot withstand instantaneous power interruptions, as this may cause the collapse of industrial PCs or controllers. Uninterruptible power supply (UPS) can prevent such incidents from occurring. Understanding the basic knowledge of UPS and the following five precautions can help choose the appropriate UPS power supply for industrial applications.
Define the application requirements for UPS
What type of load will UPS power – AC or DC? Traditional systems tend to operate on AC power, so the renovation of old systems also requires AC power. In the past 20 years, the growth of the industrial PC market has shifted towards DC power supply. We should fully consider the requirements for power and operating time, carefully specify the UPS specifications, and establish realistic expectations.
If there is a continuous power outage, UPS can ensure the safe and orderly shutdown of the control platform, thereby avoiding data loss, system crashes, or failures. When designing a system, please choose an appropriate battery capacity to allow the system to run for a period of time before shutting down the PC or restoring the main power within a reasonable time. A super sized battery system may take longer to charge.
Most UPS manufacturers use industry standard types. Some manufacturers only offer one technology, such as valve regulated lead-acid (VRLA). And other companies will offer a variety of products, such as valve regulated lead-acid, wide temperature valve regulated lead-acid, and lithium iron phosphate. Different batteries have varying performance and lifespan.
Ideally, UPS will provide multiple health monitoring points for the battery system, so operators can take preventive measures before the battery fails. Most UPS systems use LEDs, while a few provide dry node outputs with fixed threshold points. Newer UPS systems provide the above methods and integrate data into a control platform that communicates through industrial Ethernet protocols.
With the widespread implementation of industrial Internet of Things and big data in industrial applications, reliable electricity is more important than ever before. Choosing a suitable UPS system for an application can prevent potential issues and costs caused by power outages. Image source: Phoenix Contact