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Relating communication parameters
Following parameters should be set or changed if necessary.
Baud rate (f800)... Shipment setting = 4: 19200bps
Baud rate of all inverters in the network (master and slave) should be same network.
Parity (f801) ... Shipment setting = 1: Even parity
Parity of all inverters in the network (master and slave) should be same network.
Communication time-out time (f803) ... Shipment setting = 0.0
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. f803=1.0
second
) to the slave inverters. The master inverter does not trip even though the communication
breakdown 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 (f810, f811-f814)
The command from master inveter can be performed by the parameter of the point setting.
See “6.1 Speed proportional control” for details.
Setting example of parameters
Parameters relating to the master side (example)
f806:3 Master (transmission of frequency com-
mands (%)
(100% at FH))
f829:0 Selection of communication protocol
(Toshiba inverter protocol)
f800:4 Baud rate
(ex. 19200bps)
f801:1 Parity (Even parity)
cmod:1 Example: Panel keypad
fmod:2 Example: Terminal VIB
Parameters relating to the slave side (example)
f806:0 Slave (0 Hz command issued in case the master
inverter fails)
f829:0 Selection of communication protocol
(Toshiba inverter protocol)
f803:1.0 Communication time-out time (ex. 1 second)
f800:4 Baud rate (same to the master side)
f801:1 Parity (same to the master side)
cmod:0 Terminal block (ex. Driven by F, ST)
(f241:Run and stop of operation is controlled with the frequency
reference value by setting the “run frequency”.)
fmod:4 RS485 communication
f810:1 Enabled
f811:? Adjusted to the system
Point 1 setting (%)
f812:? Ditto Point 1 frequency (Hz)
f813:? Ditto Point 2 setting (%)
f814:? Ditto Point 2 frequency (Hz)
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