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3-22 975-0200-01-01
Setting Foldback Mode
Foldback mode is used to disable the output when a transition is made
between the operating modes. The power supply will turn off/disable the
output and lock in foldback mode after a specified delay if the power
supply transitions into CV mode or into CC mode, depending on the
foldback mode settings. This feature is particularly useful for protecting
current or voltage sensitive loads. Foldback can be set to trigger a switch
when transitioning from CV to CC mode or from CC to CV mode.
To set the foldback protection and foldback delay time:
1. Turn the mode control knob to the FLD position or press the Rotary
knob/Enter button if the mode control knob is already at the FLD
position.
2. Select the type of crossover that will cause foldback to trigger by
using the Rotary knob/Enter button.
If the mode selected is CC or CV mode, the foldback delay timer will
start on a transition into the selected mode. If the mode selected is
none, foldback is not enabled.
3. Press the Rotary knob/Enter button when the desired mode has been
selected.
The FLD LED will illuminate and DELA will be displayed in the
output voltage display.
4. Adjust the desired delay time using the Rotary knob/Enter button.
The range can be set from 0.50 seconds to a maximum of 50 seconds.
The step size is in increments of 0.05 seconds when setting from 0.50
to 5 seconds and then in 1 second increments from 5 seconds to 50
seconds.
5. Once the desired foldback delay time has been selected, press the
Rotary knob/Enter button to commit the foldback delay setting.
To disable foldback protection:
1. Turn the mode control knob to the FLD position or press the Rotary
knob/Enter button if the control knob is already at the FLD position.
2. FLd is displayed on the output voltage display and the output current
display shows the current foldback trigger mode.
3. Turn the Rotary knob/Enter button until nonE is displayed in the
output current display.