The VAV Compact Controller is supplied with a prewired connecting and communication cables assembly.
Tool = Configuration and maintenance interface
Power supply and bus cable (color coded and labeled)
|Core designation||Core color||Terminal code||Description|
|Cable 1: Power / black sheathing|
|1||red (RD)||G||System voltage AC 24 V|
|2||black (BK)||G0||System neutral AC 24 V|
|Cable 2: Communication / blue sheathing|
|8||grey (GY)||+||Bus (BACnet MS/TP)|
|9||pink (PK)||-||Bus (BACnet MS/TP)|
Terminal layout may differ for each device. Devices with twin-terminals or internally connected terminals may be encountered as well as bus connection in junction boxes.
The operating voltage at terminals G and G0 must comply with the requirements under SELV or PELV.
Safety transformers with twofold insulation as per EN 61558 required; they must be designed to be on 100 % of the time.