Fuji Electric FRENIC-Ace series - Communication Port 2 (Terminal Block) (Only for FRN-E2-2;4;7 GB, -4 C)

9.1 Overview of RS-485 Communication
9-4
[ 2 ] RS-485 communication port 2 (only for FRN-E2■-2/4/7GA, -2/4/7J)
The RS-485 communication port 2 designed for a standard keypad uses an RJ-45 connector having the following
pin assignment:
Pin Signal name Description
1 CAN+ CAN signal, high side
2 GND Ground signal
3 CAN- CAN signal, low side
4 DX- RS-485 signal, low side
5 DX+ RS-485 signal, high side
6 NC Not connected
7 GND Ground signal
8 NC Not connected
* The terminating resistor 112 Ω is built in. Open/close with SW6. *
For details about SW6, refer to Chapter 2, “2.2.8 Operating various switches.”
[ 3 ] RS-485 communication port 2 (terminal block) (only for FRN-E2■-2/4/7GB, -4C)
The FRENIC-Ace has terminals for RS-485 communication in the control circuit terminal. The details of each
terminal are shown below.
Terminal symbol Description Remarks
SD Shield terminal
DX- RS-485 signal, low side Built-in terminating resistor: 112 Ω
Open/close with SW6*
DX+ RS-485 signal, high side
* The terminating resistor 112 Ω is built in. Open/close with SW6. *
For details about SW6, refer to Chapter 2, “2.4.2 Setting up the slide switches.”