Delta Electronics VFD-EL manual RS-485, Group 9 Communication Parameters, 09.00

Chapter 4 Parameters

Group 9: Communication Parameters

There is a built-in RS-485 serial interface, marked RJ-45 near to the control terminals. The pins are defined below:

8	1	RS-485
		Serial interface		3: GND
		1: Reserved 2: EV
		4: SG-	5: SG+	6: Reserved
		7: Reserved 8: Reserved

Each VFD-EL AC motor 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	1 to 254	Factory Setting: 1

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.

09.01Transmission Speed

Factory Setting: 1

Settings	0	Baud rate 4800 bps (bits / second)
	1	Baud rate 9600 bps
	2	Baud rate 19200 bps
	3	Baud rate 38400 bps

This parameter is used to set the transmission speed between the RS485 master (PC, etc.) and AC motor drive.

09.02Transmission Fault Treatment

Factory Setting: 3

Settings	0	Warn and keep operating
	1	Warn and RAMP to stop
	2	Warn and COAST to stop
	3	No warning and keep operating

This parameter is set to how to react if transmission errors occur.

See list of error messages below (see section 3.6.)

4-84 Revision August 2008, 2ELE, V1.02