A Proactive Strategy for Control System Maintenance Why proactive control system maintenance covering I/O health and performance, HMI/SCADA, and controllers is critical to avoiding unplanned downtime and providing line of sight into issues that need to be addressed. May 9th, 2021 It’s long been known that a reactive approach to industrial control system maintenance is not an ideal strategy. Working from a reactive stance, in which problems are corrected as they occur, results in unplanned downtimes, lost production costs, as well as potentially higher repair costs as problems are not detected early enough to avoid additional impacts. Moving to a proactive strategy, however, requires technology that can provide insights into control systems and their performance to alert users to the fact that specific maintenance or repairs are needed to keep the system in working order.