National Instruments RMX-410 Series, User Manual, Page: 56 / 132

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NATIONAL
INSTRUMENTS
5.2.3 Automatic Crossover
When the power supply operates in Constant Voltage mode, while the load current is increased
to greater than the current limit setting, the power supply will automatically switch to Constant
Current mode. If the load is decreased to less than the current limit setting, the power supply will
automatically switch back to Constant Voltage mode.
5.2.4 Output On/Off Control
The Output On/Off enables or disables the power supply output. The Output On/Off can be
activated from the front panel using the OUTPUT button or from the communication interface.
The OUTPUT button can be pressed at any time (except in Front Panel Lock mode or when a Fault
condition exists). When the output is disabled, the output voltage and current fall to zero and the
Voltage display shows ”
OFF ”. Press the OUTPUT button to recover from Faults such as: OVP, UVP
and FOLD faults, after the Fault conditions have been removed.
5.2.5 Safe Start and Auto-Restart Modes
At turn on, the power supply AC On/Off can start at last setting of Output Voltage and Current
limit with the output enabled (Auto-restart), or it can start with the output disabled (Safe mode).
Press and hold the OUTPUT button to toggle between Safe start and Auto-restart modes. The
Voltage display will continuously cycle between ”
SAFE
” and ”
ATO
” every 3 seconds. Releasing
OUTPUT button while one of the modes is displayed, selects that mode. The default setting at
shipment is in Safe mode.
• Automatic Start Mode ( ATO )
The power supply is restored to last operation setting. Upon start-up, the output is
enabled or disabled according to the last setting.
• Safe Start Mode ( SAFE )
The power supply is restored to last operation setting and sets the Output to Off state.
At start-up, the output is disabled and the output voltage and current are zero. To
enable the output, momentarily press OUTPUT button.
5.2.6 Viewing Software Revision
Via the Front Panel Menu, it is possible view installed software revision.
1. Press MENU button. MENU (GREEN) LED illuminates. ”
set ” message appears on the Voltage
display.
2. Rotate Voltage encoder until ” i no ” message appears on Voltage Display.
3. Press Voltage encoder. The ” Rev. ” message appears on the display, and the installed software
revision number appears on the Current display.