FAQ000243463
09 September 2022
C-Bus Automation Controller Power Supply - Requirements
24V DC (+/- 5%), 10W max, 2W typical
SE8350/SE8650 Power Supply - Requirements
24V AC (+/- 15%), 50/60Hz, 6VA (0.25A)
Modbus RS-486 Cabling - Requirements
D1+ and D0- = Twisted Pair, Shielded, Imp 120Ω - eg Belden 9842
COM = Common (Reference) Wire
The 5500NAC2 and 5500AC2 contain the following optional in-built terminators options:
low power terminator of 120 Ω + 1 nF via link AT–BT
legacy terminator of 120 Ω via link BT-A
5500NAC2 or 5500AC2 - D1+ connector is wired to pin 13 (RS-485 +) on the SE8350/8650 - shown by brown wire
5500NAC2 or 5500AC2 - D0- connector is wired to pin 14 (RS-485 -) on the SE8350/8650 - shown by blue wire
5500NAC2 or 5500AC2 - COMM - connector is wired to pin 15 (RS-485 REF) on the SE8350/8650 - shown by green wire
Modbus RS-485 communication line must be terminated at each end
Refer to the 5500NAC2 or 5500AC2 Quick Start Guide and User Manual for further details regarding the C-Bus Automation Controller Power Supply and Modbus RS485 Modbus wiring connectors and wiring/electrical requirements. These can be found by scrolling to the bottom of the product page and downloading the applicable pdf
https://www.se.com/ww/en/product/5500AC2/application-controller-spacelogic-cbus-rs232-485-ethernet-din-mount-24v-dc/https://www.se.com/ww/en/product/5500NAC2/network-automation-controller-spacelogic-cbus-bacnet-modbus-ip-6m-din-mount-24v-dc/Refer to the SE8350 or SE8650 Installation Guide for further details on the wiring connectors
https://www.se.com/au/en/download/document/II-SE8300/https://www.se.com/au/en/download/document/II-SE8600/
