Network & Cabling Requirements - Delta Controls RTS-424 Installation Manual

Room Temperature Sensor Installation Guide
Network & Cabling Requirements
To ensure network stability and reliable communications on the Intelli-stat network, adhere to the following network
and cabling requirements:
Item Description
Cabling For RTS-424 networks it is recommended that you use network cabling that matches the
following specifications:
• Balanced 100 to 120 ohm nominal impedance Twisted Shielded Pair (TSP) Cable
• Nominal capacitance of 16 PF/FT or lower
• Nominal velocity of propagation of 66% or higher
*RTS-424 networks have also been tested to a limited degree on unshielded 18 AWG wire with
no ill effects. For new installations it is recommended to use the better cabling mentioned above
as this will help to avoid any potential network communication problems and allow for future
upgrades to V3 MS/TP BACstat networks.
Topology For RTS-424 networks, ensure the cable is installed as a daisy-chain from one device to the
next.
The maximum number of devices per Intelli-stat network is 8.
Max. Nodes
For more detailed information, including wiring, refer to the RS-485 Network Installation Guide (DOC818-11).
Document Edition 1.1
Network & Cabling Requirements
Page 7 of 8