1234 Systems Configuration

Once the inputs and outputs have been defined, the designer needs to define any constraints that might be placed on the EMCS hardware. Building size, building design, building location, building use, design of the physical plant, type and layout of the secondary distribution systems, design of the electrical system, and type and condition of existing controls in retrofits as well as the nature of the personnel operating the building are some of the items to be considered when configuring an EMCS.

Cost of installation can vary significantly depending on the type of system architecture (centralized versus distributive), the method of transmitting information between system controllers and the input/ output devices (direct hardwire versus multiplexing versus powerline carrier), the types of system controllers and input/output devices selected (two way versus one way communicators) and the amount of programming required (customized algorithms versus firmware).

Knowing who is going to maintain the software and perform the necessary administrative functions (i.e. inputting schedule changes, monitoring alarms, and producing reports) not only affects how many but also where the operator interface level personal computer is to be located, and the type of monitoring and alarming that will be needed. This will also determine training requirements and the extent of support services needed.

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