Ventilation Controller BACnet & KNX
WCC 310 / 320 PLUS Motor Controller
The WCC 310/320 Plus supports both BACnet IP and KNX. Other field bus options available are BACnet MSTP and MODBUS TCP/IP.
A built-in touch screen enables the unit to be configured and monitored in the field.
Both 24VDC and MotorLink actuators are able to be controlled across the 10 motor lines that the controller supports. The motor lines may be grouped into motor groups that provides easy control of the motors by a BMS.
The controller provides status information of each motor line as to the actuators current position and also indicates if all actuators are fully closed removing the need for limit switches on the windows to indicate when they are closed.
Manual operations is provided for all motor lines as well as master close if an optional rain sensor is installed.
To reduce operating power requirements the controller switches to power save mode with 5W consumption. When manual operation or BMS requests the actuator to operate maximum load increases to 650W with upto 20 actuators operating.
Simple BMS control is provided where only the window opening position needs to be provided and the the controller positions the actuators accordingly and provides real time status information of tha actuators current position.
If the MotorLink actuators are to operate quietly the BMS requests the actuators to be opened at ventilation speed or if they are to opened quickly the BMS requests normal operation speed. This enables the MotorLink actuators to be operated with out disturbing the occupants.
The WCC 310/320 Plus may be connected to another in a diasy chain configuration. This reduces the number of network connections to the building management back bone. As an example 4 controller may be installed together and a single network connection is only required to the BMS network.
With MotorLink only 3 wires are required for full control of the actuator using standard 3 core double insulated cable. If there is a long run from the controller to the actuators then a 5 core cable may be used to lower the voltage drop.