TEXIO PU100-7.5, Instruction Manual

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5.3.1 Setting the OVP level
The OVP can be set when the power supply output is Enabled (On) or Disabled (Off). To set the
OVP level, press the OVP/UVL button, so that the CURRENT meter shows "OUP".
The VOLTAGE meter shows the OVP setting level. Rotate the VOLTAGE encoder knob to adjust
the OVP level. The display will show "OUP" and the setting value for 5 seconds after the
adjustment has been completed and then will return to it's previous state.
To preview the OVP setting, press OVP/UVL Table 5-1: Maximum OVP setting levels
pushbutton so that the CURRENT display will show
"OUP". At this time, the VOLTAGE display will
show the OVP setting. After 5 seconds, the display
will return to it's previous state.
5.3.2 Activated OVP protection indications
When the OVP is activated the power supply output shuts down. The VOLTAGE display shows
"OUP" and the ALARM LED blinks.
5.3.3 Resetting the OVP circuit
To reset the OVP circuit after it activates:
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.
3. There are four methods to reset the OVP circuit.
3.1 Press OUTPUT button.
3.2 Turn the power supply off using the AC On/Off switch, wait until the front panel display turns
Off, then turn the power supply on using the AC On/Off switch.
3.3 Turn the power supply output off and then On using the SO control (refer to sect.5.7). In this
method the power supply should be set to Auto-Restart mode.
3.4 Send OUT 1 command via the RS232/485 communication port.
5.4. UNDER VOLTAGE LIMIT (UVL)
The UVL prevents adjustment of the output voltage below a certain limit. The combination of UVL and
OVP functions, allow the user to create a protection window for sensitive load circuitry.
5.4.1 Setting the UVL level
Setting the UVL can be made when the power supply output is Enabled (On) or Disabled (Off). To
set the UVL level, press the OVP/UVL button TWICE, so that the CURRENT meter shows “UUL”.
The VOLTAGE meter shows the UVL setting level. Rotate the VOLTAGE encoder knob to adjust
the UVL level. The display will show “UUL” and the setting value for 5 seconds after the
adjustment has been completed and then will return to it’s previous state. UVL setting values are
limited at the maximum level to approximately 5% below the Output Voltage setting. Attempting to
adjust the UVL above this limit will result in no response to the adjustment attempt. The minimum
UVL setting is zero.