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INET Control System and Building Automation Acronyms

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Ever wonder what the acronyms mean? – well, here are a few that may solve your curiousity:


BAS = Building Automation System

BMS = Building Management System

EMS = Energy Management System

CCMS = Central Control Monitoring System

FECS = Front End Computer System

VAV = Variable Air Volume

VFD = Variable Frequency Drive

AHU = Air Handling Unit

RTU = Roof Top Unit


PCU = Process Control Unit

DCU = Digital Control Unit

ASC = Application Specific Controller

MR = Micro Regulator

LIU = Lan Interface Unit

MCU = Micro Control Unit

DPU = Door Processing Unit

SLI = Sub Lan Interface

I am sure I have left many of them out – but I will keep updating this list.

If there are any you would like us to add to this list  – send me an email

Bryan Scarborough

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