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Over Temperature Protection (OTP)
54 Operating Manual for XPR Series Power Supply
Over Temperature Protection (OTP)
The OTP function allows you to select how the power supply recovers from an over
temperature shutdown using the rear panel switch S1-8. See Table 3.2
for the switch
settings and selections. The OTP shutdown circuit activates before the internal
components can exceed their safe internal operating temperatures. When an OTP
shutdown occurs, the front panel OTP LED turns on. An Over temperature condition
will disable the output.
Table 3.2 Switch Settings for Over Temperature Recovery Options
Note If switch S1-7 is ON but there is no signal applied, the INT LED turns on and the
power supply will not provide an output until the HIGH signal level is applied.
Any of the eight switches on S1 is OFF when it has been flipped up to break contact,
ON when flipped down to close contact.
Switch S1-8
OTP Shutdown
Selection
Description
OFF Auto Reset (Default) The supply recovers to normal operation
when the over temperature condition no
longer exists.
ON Latch OFF After an over temperature shutdown, the
supply stays off until you turn the AC power
switch OFF, then you turn the power supply
ON to continue use.