Toshiba TOSVERT VF-AS1 instruction manual Parameters relating to the slave side example

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„Relating communication parameters

Following parameters should be set or changed if necessary.

•Baud rate (, )... Shipment setting = : 19200bps

Baud rate of all inverters in the network (master and slave) should be same network.

•Parity () ... Shipment setting = : Even parity

Parity of all inverters in the network (master and slave) should be same network.

•Communication time-out time() ... Shipment setting = 

Operation is continued by the last received command value in the case of a communication break- down. To stop the operation of inverter, provide a communication time-out time (ex. = sec- ond) to the slave inverters. The master inverter does not trip even though the communication break- down happens. To trip the master inverter, provide an interlock mechanism by installing a FL fault relay point or the like from the slave side.

•Frequency point selection (, )

Adjusted to the system.

See chapter “6.1 Speed proportional control” for details.

„Setting example of parameters (2-wire RS485 communication)

Parameters relating to the master side (example)

 Master (transmission of output frequency

(%)(100% at FH))

 Selection of communication protocol (Toshiba inverter protocol)

 Communication baud rate (ex. 19200bps)

 Parity (even parity)

	Example: Panel
	Example: RR/S4 input

<During torque control>

 Master (sends a torque command)

Parameters relating to the slave side (example)

 Slave (If the master inverter trips, all slave inverters stop operating.)

 Selection of communication protocol (Toshiba inverter protocol)

 Communication time-out (ex. 1 second)  Communication baud rate (same to the master side)  Parity (same to the master side)

 Terminal block (ex. Driven by F, ST)

( Run and stop of operation is controlled with the frequency reference value by setting the “run frequency”.)

 Operation panel RS485 (2-wire) communication input

		2-wire RS485
?		Adjusted to the system	Point 1 setting (%)
	?	Ditto	Point 2 frequency (Hz)
	?	Ditto	Point 2 setting (%)
	?	Ditto	Point 2 frequency (Hz)

<During torque control>

 RS485 communication input

 Load sharing gain input mode selection (ex. Operation panel input enabled)

 Panel load sharing gain (ex. Sharing of half of the com- mand value)

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