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Over Temperature Protection (OTP)
70 Operating Manual for XFR 2.8kW 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 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.