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Operation
Power Supply Operation
66 Operating Manual for XDC Series Power Supply
OVP shuts down the power supply if the protection limit is exceeded. The other
options offer a choice: they shut down the power supply or issue a warning. When
the protection level is set to zero, that mechanism is considered disabled. However,
in the case of OVP, a hardware protection mechanism still exists.
The last protection mechanism is Fold Mode protection, when the unit will shut
down if it enters the selected regulation mode for a specified period of time.
Other protection mechanisms designed to protect the power supply are:
• AC Off: AC Off protection will disable the output if the AC line drops below
the acceptable range.
• High Temperature Alarm: A High Temperature condition will queue an alarm
message when the temperature of critical internal components nears the
maximum operating temperature.
• Over Temperature Protection (OTP): An over temperature condition will
disable the output.
• Sense Protection: Sense Protection will disable the output when the internal
sense circuit is tripped by either reversed polarity at the output of the supply or
a high voltage present at the output.
Recovery options are available for AC Off and OTP.
Also, see “Status Registers” on page 142.