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2.7
Safe-Start and Auto-Restart Modes
At AC turn on, the power supply can start at the last setting of the Output Voltage and Current limit
with the output enabled (Auto-restart), or it can start with the output disabled (Safe mode).
1.
Press the Configuration button. Display shows START SAFE or START AUTO, depending on the
currently selected start mode.
2.
Rotate the Current encoder to select between SAFE or AUTO start mode.
3.
Press the current encoder to select Safe mode or Auto-restart mode.
The default setting is Safe mode.
Automatic Start Mode (AUTO)
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 (settings are
preserved). To enable the output momentarily, press the OUTPUT button.
2.8
Viewing Software Revision
Via the Front Panel Menu, it is possible to view the installed software revision.
1.
Press the COMM button. COMM (GREEN) LED illuminates.
2.
Rotate the Voltage encoder until the Rev. message appears on the Voltage display, and the
installed software revision number appears on the Current display.
2.9
Alarms and Protective Functions
2.9.1
Introduction
There are several conditions that cause alarm (RED LED blinks). All alarms affect the output.
When an alarm occurs, the respective fault will appear on the display and the alarm LED
illuminates. It is possible that more than one fault (alarm) may be triggered, but only the first will be
shown on the display. If the second fault is still active when the first fault is removed, then the
second fault will be displayed.
The following protective functions are incorporated in the power supply:
•
OVP - Over Voltage Protection
•
UVP - Under Voltage Protection
•
ILC - Interlock
•
ENA - Enable
FOLD - Fold Back Constant Current or Constant Voltage
•
•
AC FAIL - AC Power failure
OTP - Over Temperature Protection
•
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