78
PWX
Master-Slave Parallel Operation
In master-slave parallel operation, one unit is the master unit, and all other units connected in
parallel are slave units. The master and slave units must all be the same model. You can con-
trol the whole system by operating the master.
You can use master-slave parallel operation to expand the output current (maximum output
current: the rated output current of one unit × the number of units connected in parallel).
You can connect up to four units, including the master, in parallel.
The difference in the output voltage and output current between the master unit and the slave
units is within approximately 5 % of the rating.
Features of the PWX series during master-slave parallel
operation
The features of the PWX series during master-slave parallel operation are as follows:
Voltage display and current display
The voltmeter on the master unit displays the voltage. The last voltage that was set on the
master unit is displayed. The voltmeters on the slave units display “SLAV.”
The master unit’s ammeter displays the total of the currents of all the units connected in par-
allel.
For slave units, the current display of each slave unit can be set (CF19: OFF/ON).
If the maximum output current exceeds 99.99, the maximum current is displayed as 999.9.
You can switch the display so that it shows power. The master unit’s ammeter displays the
total of the powers of all the units connected in parallel.
For slave units, the power display of each slave unit can be set (CF19: OFF/ON).
If the number of units during master-slave parallel operation that has been specified in the
CONFIG settings (CF01) does not match the actual number of units connected in parallel, the
correct current will not be displayed.
External control
This is only available on the master unit.
CAUTION
When using the PWX series independently or when there are units not using parallel opera-
tion, disconnect the parallel operation connections. Otherwise, the PWX series may not
operate properly.
See
See
See
Lit
Master unit
Slave unit
Example of the panel display
during parallel operation
(The output current is 56 A.)
See
Содержание PWX1500H
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