DC Power Supply Operation 3
Protection Functions
U3606A User’s and Service Guide 81
Overcurrent protection (OCP)
In constant voltage mode, the U3606A regulates the output voltage at the
selected value, while the load current varies as required by the load. The
overcurrent protection will disable the output if the load effect exceeds
the programmed protection value. This protection is useful when the load
is sensitive to an overcurrent condition.
The following steps shows you how to set the OCP trip level, how to check
OCP operation, and how to clear the OCP condition.
Setting the OCP trip level
1 The OCP trip level can be programmed when the output is enabled
(OUT) or disabled (SBY). Ensure that the U3606A is operating in
constant voltage mode. (The CV annunciator is illuminated.) Press
Shift > Protect to enter the OCP edit menu.
2 Press or to select which digit position to be changed.
3 Press or to increase or decrease the value. The OCP value is set
to the maximum protection limits by default.
• 1.1000 A when range S1 is selected, and
• 3.3000 A when range S2 is selected.
4 Press Shift > Save or Voltage (Protect) to save the changes. “donE” will be
briefly displayed in the upper secondary display. The display will then
return to normal.
5 Alternatively, press Shift > Exit or Shift > Protect to exit the edit mode
without saving.
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