34
Controller User Manual
Terminology
BMS (Building Management System):
Also referred to BAS (Building Automation System) is a system that allows users to control
multiple equipment from a central location.
PID (Proportional-Integral-Derivative) Controller:
A control loop feedback mechanism used in industrial control systems. By
adjusting control outputs, a PID controller attempts to minimize the difference between a measure process variable and a desired
setpoint.
PLD (Programmable Logic Controller):
A programmable microprocessor that performs switching, timing and process control tasks.
HMI (Human Machine Interface):
A visual touch screen that facilitates users’ interaction with the PLC and allows for the monitoring
of data points and setting of parameters.
VFD (Variable Frequency Drive):
A controller that drives an electric motor by varying the input frequency and voltage to the electric
motor.
Summary of Contents for eco-Air Series
Page 38: ...38 Controller User Manual Notes...
Page 39: ......
