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Using Over Voltage Protection (OVP)
The OVP circuit protects the load in the event of an analog programming
error, an incorrect voltage control adjustment, or a power supply failure.
The OVP circuit monitors the output voltage at the output of the power
supply and will disable the output whenever a preset voltage set point is
exceeded. You can set the preset voltage trip point by using the mode
control knob on the front panel or via one of the remote programming
interfaces.
Defining the OVP Set Point
To define the OVP set point:
1. Turn the power supply On.
Ensure the voltage is lower than the desired set point.
2. Set the output to the desired voltage.
OVP can be set without setting desired output voltage first.
3. Turn the mode control knob to the PRT position.
Pro OUP is displayed.
4. Press the Rotary knob/Enter button.
5. Turn the Rotary knob/Enter button to set the upper limit protection.
See “Coarse and Fine Adjustment Modes” on page 3–2.
6. Once the desired value has been set, press the Rotary knob/Enter
button to commit the setting.
The SCPI command (s) for these instructions are:
[[:]SOURce[<channel>]]:VOLTage:PROTection[:OVERvoltage]
[:LEVel]
If the output is between OVP
set
and –5%, an OVP warning message is
possible when in APG mode.
Important:
The OVP range is variable from V
SET
+5% to V
MAX
+25%.