Environmental vibration requirements for DCS cabinets
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This post was last edited by The project’s progress on 2021-10-23 at 13:31. I have a question: the control cabinets are located in the workshop, with each cabinet room separated from the smoke exhaust fan room by one building and one hallway, covering a distance of about five meters. The smoke exhaust fans are used in case of fires. I’m not sure whether it’s necessary to consider the effects of vibration; what impacts can vibration have on DCS cabinets?
Vibration is mainly considered in terms of its impact on the control system. The impact on display accuracy can, in severe cases, accelerate component failure or looseness of contact points, leading to abnormalities in the control system. The amplitude, frequency, and acceleration of floor vibrations in the control room should meet the limitations specified by the manufacturer of the control system. GBT 18271.3-2017 Process measurement and control devices – General methods and procedures for performance evaluation – Part 3: Tests on the effect of influencing quantities. The control system should be below the vibration conditions shown in the table below. Furthermore, different DCS manufacturers often have varying vibration requirements for the control room.
Determined based on the actual vibration conditions. A large distance does not necessarily mean no vibration
If you are in the chemical industry, is the control room built to be explosion-proof, and are the exhaust fans of a ducted type? In other words, since the fan is located on the ceiling, the vibrations in the air ducts do not affect the cabinets in the cabinet rooms