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3.1 Functions
3.1.1 CAP Mode
This mode is used for controlling fans with constant air pressure in air duct via pressure transmitter. If constant pressure is
selected, the duct pressure setpoint can be defined for the supply air fan. Exhaust air fan follows the supply air fan with the
same flow rate.
3.1.2 CRPM Mode
This mode is used for controlling fans with constant RPM (speed).
When the constant speed is selected, the speeds can be set via the menu separately for supply air fan and exhaust air fan.
3.1.3 VOD Mode
VOD mode is used for air quality of the area via air quality sensors. (CO2, FTF, VOC). This mode can also be used when
multiple sensors are installed. If there are more than 3 air quality sensors, then a signal selector should be used. Signal selector
chooses the biggest value of the sensor feedback voltage to run the VOD scenario.
3.1.4 Modbus / Bacnet
EVO-R units have 2 communication port on PLC, one is rs485 and other is ethernet port. rs485 port used for internal
communication of pressure transmitters. Ethernet port is used for below communication to Building Management Systems
(BMS)
-ModBus TCP
-Bacnet IP
Summary of Contents for EVO-R
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