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4.
Press the Current encoder for selection of Foldback state. The display blinks once to
acknowledge the setting.
If the CC state is selected, the FOLD I indicator appears on the display.
If the CV state is selected, the FOLD V indicator appears on the display.
5.
To turn off the Foldback protection, select FOLD OFF, following the same procedure above.
Foldback indicator disappears from the display.
6.
Exit the PROT menu by pressing the Back button or the PROT button.
7.
Set the Foldback delay time by rotating the Voltage encoder until FLD.DL appears.
The delay can be set by the Current encoder between 0.1~25.5sec.
8.
Press the Current encoder to select the required delay.
The display blinks once to acknowledge the setting.
9.
Exit the PROT menu by pressing the Back button or the PROT button.
2.9.4.1
Activated FOLD Alarm
When the Foldback is activated the power supply output shuts off. The display shows FOLD FAULT,
and the alarm LED blinks with 1/2 Hz frequency.
2.9.5
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.
At output OFF -> ON transition, additional 500ms delay is added.
Total protection delay = 500ms + delay setting.
2.9.6
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.
NOTE
32
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