AMETEK ReFlex - Manual (Page 252)

ReFlex Power™ DC Power Supplies
M380056-01 Rev K 6-49
done automatically when the series group is set up through software. The
series group is programmed as a “virtual” module, equivalent to a single
module with the combined voltage rating of the series group of modules. Only
modules of the same model number could be series connected.
S ERIES /P ARALLEL O PERATION
Series-Parallel groups are also allowed. The requirements for configuring the
group are a combination of those for the dedicated series and parallel groups:
the parallel modules must be physically contiguous, while the series grouping
is not location dependent. The outputs must be hardwired as parallel groups
connected in series. The remote sense leads are connected only to the
paralleling-master modules. The series group is programmed as a “virtual”
module, equivalent to a single module with the combined voltage/current
ratings of the series-parallel group of modules. Only modules of the same
model number could be series-parallel connected.
O UTPUT V OLTAGE / CURRENT R EGULATION
The DC power supply module is capable of operating while regulating either
the output voltage, constant–voltage mode (CV), or the output current,
constant–current mode (CC). Which parameter would be regulated is
dependent on the programmed settings of the output voltage and current in
relation to the resistance of the load. If the load resistance is greater than the
voltage setting divided by the current setting, the output voltage would be
regulated in voltage-mode. If the load resistance is less than the voltage
setting divided by the current setting, the output current would be regulated in
current-mode. The crossover point is when the load resistance equals the
voltage setting divided by the current setting. The DC power supply can
automatically crossover between the two modes of operation in response to
load demands. Refer to Figure 6-18 for a diagram showing the operating
regions for constant-voltage and constant-current.