AMETEK ReFlex - Manual (Page 116)

ReFlex Power™ AC Power Supplies
M380056-01 Rev K 4-31
through software. In a multi-phase group the load could be connected in wye or
delta configuration, but the module outputs must be wye connected.
CAUTION
Do not connect the AC modules in a delta configuration.
Modules must be set to the same output range when multi-phase connected.
O UTPUT V OLTAGE / CURRENT R EGULATION
The AC 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 AC power supply can automatically crossover
between the two modes of operation in response to load demands. Refer to
Figure 4-9 for a diagram showing the operating regions for constant-voltage
and constant-current.
V
Constant-Voltage
Regulation
Constant-Current
Regulation
Set
I
Set
Output
Current
Output
Voltage
R >
V
I
Set
Set
R <
V
I
Set
Set
R =
V
I
Set
Set
Where, R = Load Resistance
= Output Voltage Setting
= Output Current Setting ISet
VSet
Figure 4-9. CV and CC Regulation