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to indicate that the voltage limit has been reached. This condition is annunciated by VL+ on the front
panel.
As shown by the horizontal portion of the load line, when the unit is sinking power, the output current
may continue to increase in the negative direction as more current is forced into the unit. This can
happen when the load is a power source such as a battery, and its output voltage is higher than the
voltage limit setting of the power supply. Once the current exceeds the built-in negative over-current
limit, the output will shut down, the output relays will open, and the OC status bits will be set. In such a
case, it is important to set the voltage limit properly in order prevent this protection shutdown.
For additional information on priority mode operation during output turn-on/turn-
off, refer to
Keysight RP7900 Series Operating and Service Guide
Turn-On Turn-Off
Behavior.
4 Using the Regenerative Power System
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