TDK-Lambda G10-500 - 3.3.6 Over Temperature Protection (OTP); 3.3.7 AC Fail Alarm

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3.3.5 Protection Delay
Foldback protection delay is the time between feedback transition (CV to CC transition or vice
versa) event occurrences to output shutdown.
UVP protection delay is the time between UVL crossover point events to output shutdown.
NOTE
At output OFF -> ON transition, additional 500ms delay is added.
Total protection delay = 500ms + delay setting.
3.3.6 Over Temperature Protection
The OTP circuit shuts down the power supply before the internal components can exceed their
safe internal operating temperature. When an OTP shutdown occurs, the display shows OTP FAULT,
and the alarm LED blinks RED with 1/2 Hz frequency. Resetting the OTP circuit can be automatic
(non-latched) or manual (latched) depending on the power supply mode: Safe start mode or Auto-
restart mode.
• Safe start mode: The power supply stays off after the OTP condition has been removed. The
display shows OUT OFF.
• Auto-restart mode: The power supply recovers to its last setting automatically after the OTP
condition is removed.
3.3.7 AC Fail Alarm
The AC Fail alarm indicates whether the AC input has been shut down or AC input is incorrect.
When any of these faults occur, the display shows AC FAULT, Output power is disabled, and the
alarm RED LED blinks 1/2 Hz frequency.
Safe start mode: The power supply stays off after AC power returns. The display shows OUT OFF.
Auto-restart mode: The power supply recovers to its last setting automatically when the AC power
returns.