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ReFlex Power™
S
TANDALONE
Single loads are connected directly to the front panel output terminals, and the
AC power supply module is configured to operate in the standalone mode.
Twist the load wires or maintain them closely in parallel for their entire length to
minimize parasitic inductance and coupling from external circuits. Use the
heaviest gauge practical to minimize line drop. The remote sense wires should
be twisted, and may need shielding depending on the electrical noise
environment of the application. Figure 4-10 shows a standalone load
connection with remote sensing.
P
ARALLEL
AC power supply modules can be connected in parallel. The paralleled
supplies operate in a master/slave configuration, where the master controls the
output voltage and total current, and provides control signals through the
Mainframe backplane to the slaves to set their output current. The routing of
signals in this interface requires that parallel modules must be located in a
contiguous physical group; no intervening modules (which are not part of the
parallel group) are allowed to be located within the parallel group. Empty slots
can separate individual modules of the group, and the group can be extended
between two Mainframes.
The outputs of the modules must be hardwired externally, while all internal
control signal connections are configured automatically when the parallel group
is set up through software. The remote sense leads are connected to all the
modules. Figure 4-11 shows a parallel connection of two units with remote
sensing.
M380056-01 Rev L
C
ONFIGURATION
Figure 4-10. Standalone Output Configuration
C
ONFIGURATION
AC Power Supplies
4-33
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