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Power Supply Operating States
48 Operating Manual for XPR Series Power Supply
Power Supply Operating States
The power supply has 4 operating states:
• Power-On
• Output Shutdown
• Soft Start
• Normal Operation
Power-On This is the period between the time that AC power is applied to the supply (AC
breaker turned on) and the time that the power supply is ready for operation. During
this period, the internal circuits are powering up.
Output
Shutdown
In this state, the output is disabled and there is no output regardless of power settings.
The power supply can be placed in the Output Shutdown state by the ON/OFF
button, via the Interlock signal, or from a protection mechanism. This is also called
the Standby mode.
Soft Start In this state, the output power is ramping up gradually towards its target load. This
reduces equipment stress. This state occurs whenever the supply output is set to ON
or a protection state is re-set, and is approximately 2 seconds in duration.
Normal
Operation
This is the normal operating state for the power supply. The power supply is ready
to accept settings.