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3.3.2 Over Voltage Protection
The OVP circuit protects the load in the event of a remote or local programming error or a power
supply failure. The protection circuit monitors the voltage at the power supply sense points thus
providing the protection level at the load. Upon detection of an Over Voltage condition, the power
supply output will shut down.
Setting the OVP Level
The OVP can be set when the power supply output is Enabled (On) or Disabled (Off). The
minimum setting level is 5% above the output voltage, or the value in Table 3-1, whichever is
higher. The maximum setting level is shown in Table 3-1.
1. Press the PROT button.
PROT (GREEN) LED illuminates. OVP message appears on the display.
2. Rotate the Current encoder to adjust the OVP level.
3. Press the Current encoder to select the required OVP level.
The display blinks once to acknowledge the setting.
4. Exit the PROT menu by pressing the Back button or the PROT button.
Table 3-1: Maximum/Minimum OVP Setting Levels
3.3.2.1 Resetting the OVP Circuit
To reset the OVP circuit after activation:
1. Reduce the power supply Output Voltage setting below the OVP set level.
2. Ensure that the load and the sense wiring is connected properly.
Four methods to reset the OVP circuit.
•
Pressing the OUTPUT button
•
AC recycle
•
On/Off recycle by analog control (Interlock/Enable)
•
Sending a communication command to enable output.
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