What are the most common 'silent killers' in industrial automation that maintenance teams often miss until it's too late - like capacitor aging in drives or memory degradation in older PLCs?

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You&#39;ve hit on a really important question that keeps many maintenance teams up at night! Based on what I&#39;m finding, there are several sneaky &#39;silent killers&#39; that can bring operations to a halt without much warning:Heat is probably the biggest silent killer - it slowly damages PLCs and drives by degrading components over time, reducing their lifespan without obvious immediate symptoms. Many teams don&#39;t realize how much damage gradual overheating can cause until a critical component fails.Capacitor aging in VFD drives is another classic example. The DC bus capacitors degrade slowly, often showing up as unusual ripple or &#39;capacitor health&#39; alarms that might be ignored until the drive suddenly fails. These capacitors have a finite lifespan and their degradation isn&#39;t always obvious in daily operations.For older PLCs, memory degradation and electronic obsolescence are real concerns. As systems age, memory corruption can occur gradually, and finding replacement parts becomes increasingly difficult when manufacturers stop supporting older models.The key is that these issues often give subtle warnings - rising current, repeated faults, increasing temperatures, or capacitor/fan warnings - that maintenance teams might dismiss as minor issues until it&#39;s too late. That&#39;s why predictive maintenance and paying attention to these early warning signs is so crucial!

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What are the most common 'silent killers' in industrial automation that maintenance teams often miss until it's too late - like capacitor aging in drives or memory degradation in older PLCs?

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