Power Supply Regulation Modes - Xantrex XDC 10-1200 Operating Manual

Operation

Power Supply Regulation Modes

The power supply has 3 regulation modes while in the Normal Operation State:
•
•
•
The CV, CC, and CP annunciators indicate the regulation mode.
Constant In this mode, the supply's output voltage is constant while the current and power
Voltage (CV) vary with the load. The power supply will operate in constant voltage mode
whenever the load current I
(I
voltage at the selected value (V
requirements.
Constant In this mode, the supply's output current is constant while the voltage and power
Current (CC) vary with the load. The power supply will operate in constant current mode
whenever the load resistance is low enough that the load current I
current limit setting I
supply maintains the output current at the selected value (I
voltage V
Constant Power In this mode, the supply's output power is constant while the voltage and current
(CP) vary with the load resistance. The power supply will operate in Constant Power
mode when the power drawn by the load is equal to the power setpoint and the
product of the voltage and current setpoint (V
power limit point (P
the output power at the selected value (P
current I
maximum supply rating, so the Constant Voltage or Constant Current modes will
always be in effect without entering into the Constant Power mode of operation.
Automatic This feature allows the power supply to automatically switch operating modes in
Mode response to changing load requirements. If, for example, the power supply was
Crossover operating in Constant Voltage (CV) Mode (I
load current (I
supply would automatically switch into Constant Current (CC) Mode and the
output voltage would vary in response to changes in load current. If the additional
load was subsequently removed so the load current was again LESS THAN the
current limit setting, the supply would automatically return to Constant Voltage
(CV) Mode.
3–4
Constant Voltage (CV)
Constant Current (CC)
Constant Power (CP)
=V /R ). In constant voltage mode, the power supply maintains the output
L SET L
SET
varies with the load requirements.
L
SET
varies with the load requirements. The power limit is normally set to the
L
) became EQUAL TO the current limit setting (I
L
is less than the current limit setting I
L
) while the load current I
SET
. (V =I R ). In constant current mode, the power
L SET L
). In Constant Power mode, the power supply maintains
) while the load voltage V
SET
L
SET
varies with the load
L
L
) while the load
SET
and I ) is greater than the
SET SET
< I ), and the load changed so the
SET
), the power
SET
TM-XDOP-01XN
, or: I <I .
L SET
is equal to the
and load
L