3 DC Power Supply Operation
Protection Functions
84 U3606A User’s and Service Guide
Overvoltage limit (OV)
The overvoltage limit prevents the output voltage present across the load
to change beyond the programmed overvoltage limit. If the load effect
exceeds the programmed overvoltage limit, the CC output will be lowered
to maintain the output power across the load. The combination of the OV
and OVP features create a closed loop circuit protection for sensitive load
behaviors.
Setting the OV level
The OV level can be programmed when the output is enabled (OUT) or
disabled (SBY). Ensure that the U3606A is operating in constant current
mode. (The CC annunciator is illuminated.)
1 Press Shift > Limit to enter the OV edit menu.
2 Press or to select which digit position to be changed.
3 Press or to increase or decrease the value. The OV value is set
to the maximum protection limits by default.
• 30.000 V when range S1 is selected, and
• 8.000 V when range S2 is selected.
4 Press Shift > Save or Current (Limit) 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 > Limit to exit the edit mode
without saving.
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