Local Operation
Over Temperature Protection (OTP)
70
Operating Manual for XFR 1.2kW 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 SW1-8. See Table 3.3
for the
switch settings and selections. See “Rear Panel Connectors and Switch” on page 18
for more information about the switch. 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.
Table 3.3
Switch Settings for Over Temperature Recovery Options
Switch SW1-8
OTP Shutdown
Selection
Description
OFF (OPEN)
Auto Reset (Default)
The supply recovers to normal operation
when the over temperature condition no
longer exists.
ON (CLOSED) 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.
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