KEPCO RKW 300W Series Operator Manual - Manual (Page 13)

RKW 300W 060110
11
5.3.2 MASTER-SLAVE CONFIGURATIONS
Master-slave operation allows the output voltage of all the power supplies connected in parallel to
be adjusted at the same time by using the Vadj control on the designated master power supply.
5.3.2.1 MASTER-SLAVE, MULTIPLE LOADS
Figure 10 shows the master-slave connection of three power supplies in parallel, each having an
independent load, with output voltage controlled by the Vadj control of the master power supply.
Use shielded wire (recommended) or twisted wires for connections to RV and –S terminals.
FIGURE 10. PARALLEL CONNECTION, MASTER-SLAVE, MULTIPLE LOADS
5.3.2.2 MASTER-SLAVE, SINGLE LOAD
Figure 11 shows the connection of three power supplies in parallel to a single load. The output
voltage of all power supplies is controlled by Vadj of the master. Current balancing is implemented
to equalize the load current (see PAR. 5.3.1). NOTE: Use shielded wire (recommended) or twisted
wires for connections to RV and –S terminals. Match impedance of load wires between each
power supply and load by using the same wire lengths and wire sizes.
FIGURE 11. PARALLEL CONNECTION, MASTER-SLAVE, SINGLE LOAD
5.4 SERIES CONNECTION
Units may be connected in series to obtain higher voltages. When a number of power supplies are
operating in series, the current rating is to be limited to the rating of the power supply with the low-
est rating. Each Power Supply in series should be protected by a diode connected in parallel with
the output as shown in Figure 12. The diode protects against reverse voltages. It should be rated
for typically, V
REVERSE
>/= 2 x ΣV
OUT
of the series connection, I
FORWARD
>/= 2 xI
OUT
of the series
connection).