Terminal connection diagrams
29
2
System configuration example (for operating two units in parallel)
• Wire the RS-485 terminals between the converter units as shown in the diagram in
. (For the details on wiring the
RS-485 terminals, refer to
.)
• Wire the terminals of the converter units and the inverters as shown in
. (For details on wiring converter units to
inverters, refer to
• Set
Pr.1001 Parallel operation selection
of the converter unit as shown in the table below. (Refer to
for the
details on
Pr.1001
.)
Parameter setting procedure
1
Wire the RS-485 terminals of the converter units.
2
Set "1 or 2" in Pr.1001 of the slave converter unit, and then reset the converter unit.
3
Set "200" in Pr.1001 of the master converter unit, and then reset the converter unit.
• Communication between the converter units will start automatically once the RS-485 terminals have been wired and
Pr.1001 has been set on all converters.
NOTE
• Set up the slave converter unit first before the master converter unit by the
Pr.1001
setting and the converter unit reset.
Otherwise, an error may occur in communication between the converter units.
• For inverters that are connected in parallel, ensure that the three-phase wiring between each motor and inverter is the same
length. Otherwise, normal operation may not be possible.
• The Parallel operation ready (Y227) signal will turn ON once the parameters are set and the RS-485 terminals have been
wired to the converter units correctly. (Refer to
for the details on the Y227 signal.)
Converter unit
Pr.1001 setting
Master station
200
Slave station
1 or 2
CAUTION
Be sure to set Pr.1001 correctly. Operation with incorrect settings may damage the converter units.
Ensure that the motor is wired to the inverter outputs (U, V. and W) in the correct phase sequence.
Use the correct phase sequence when wiring the master and slave inverter outputs. Otherwise the
inverters may be damaged.
Summary of Contents for FR-CC2-P
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