Specifications

Chapter 5 Parameters|VFD-B Series

5-82 Revision July 2008, BE16, SW V4.08 & V5.00

Group 9: Communication Parameters

There is a built-in RS-485 serial interface, marked RJ-11 (jack) is located near the control terminals.

The pins are defined below:

1: EV

2: GND

3: SG-

4: SG+

5: Reserved

6: Reserved

NOTE

1. When connecting to the communication connector, please use RJ11 6P2C/6P4C

2. When connecting to the PU, please use RJ12.

3. Please notice that pin 1 is only for internal communication and external keypad. Please do not

use in other way to prevent drive malfunction or damage. For RS485 communication, please

only use pin 3 and pin 4.

Each VFD-B AC drive has a pre-assigned communication address specified by Pr.09-00. The

RS485 master then controls each AC motor drive according to its communication address.

09 - 00 Communication Address

Settings 01 to 254 Factory Setting: 01

 If the AC motor drive is controlled by RS-485 serial communication, the communication

address for this drive must be set via this parameter. And the communication address for each

AC motor drive must be different and unique.

09 - 01 Transmission Speed

Factory Setting: 01

Settings 00 Baud rate 4800 bps (bits / second)

01 Baud rate 9600 bps

02 Baud rate 19200 bps

03 Baud rate 38400 bps

 This parameter is used to set the transmission speed between the RS485 master (PLC, PC,

etc.) and AC motor drive.