EAD_CTL Exhaust Air Damper Control - Operation Manual - ELC.E14 - EM1.8D - EM1.8R - EM1.8U

Description

This function block set is used to control the output of an analog exhaust air damper, which is mainly linked to the output of an outside air damper, i.e., the opening percentage of the exhaust air damper is equal to that of the outside air damper.

This set also has a manually override function. If "Exhaust Air Damper Mode Select" is "0 - MAN (manual)", the output is "Exhaust Air Damper Manual Setpoint". If "Exhaust Air Damper Mode Select" is "1 - AUTO", the output is the automatic logic value of the application.

Function

At any time when "Exhaust Air Damper Mode Select" is "0" (0-MAN/1-AUTO), "Exhaust Air Damper Control" is "Exhaust Air Damper Manual Setpoint".

When "Exhaust Air Damper Mode Select" is "1" (0-MAN/1-AUTO), "Outside Air Damper Control" is equal to the larger value of "Outside Air Damper Control" and "Exhaust Air Damper Minimum Setpoint".

Internal logic

Input

Output

Example