Local Operation
3-29
Protections for hardware are listed as below:
Protection Description
FAN FAIL It is fan failure protection, and means that the cooling fan
malfunctions.
INT - AD It is inner AD power stage (see 6.2) protection, and means that
the output voltage is over or under the specific value.
INT - DD It is inner DD power stage (see 6.2) protection, and means that
the output voltage is over or under the specific value.
OUTPUT SHORT It is short protection, and means that the output terminals are
shorted.
INPUT FAIL It is power failure protection, and means that the line input
voltage is lower or higher than specification.
OVER TEMP It is over temperature protection, and will be enabled when the
internal temperature of the AC source is too high.
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