© National Instruments
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4-1
4
Parallel/Series Operation
This chapter describes the functions of series and master-slave parallel operations as well as the
connection, setup, and operation procedures.
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 control
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.
Caution
When using the RMX programmable power supply independently or
when there are units not using parallel operation, disconnect the parallel operation
connections. Otherwise, the RMX programmable power supply may not operate
properly.
Features of the RMX Programmable Power Supplies
During Master-Slave Parallel Operation
The features of the RMX programmable power supplies 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 parallel. Each slave unit displays
its own current.
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 sum
of the power output of all the units connected in parallel. Each slave unit displays its own power.
