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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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