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83-530-000 Rev J
5.11. Safe Start and Auto-Restart Modes
When turning on the power supply, it can start to its last setting of Output Voltage and
Current limit with the output enabled (Auto-restart) or start with the output disabled (Safe
mode). Press and hold the OUT button to select between Safe start and Auto-restart modes.
The VOLTAGE display will continuously cycle between “SAF” and “AUT” every 3 seconds.
Releasing OUT push-button while one of the modes is displayed, selects that mode. The
default setting at shipment is Safe mode.
5.11.1. Automatic Start Mode
In this mode, the power supply restores its last operation setting. Upon start-up, the
output is enabled or disabled according to its last setting.
5.11.2. Safe Start Mode
In this mode, the power supply restores its 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 and restore the last output voltage and current limit values,
momentarily press OUT button.
5.12. Front Panel Locking
The front panel controls can be locked to protect against an operator accidentally changing
the power supply settings.
5.12.1. Changing the Locking
Press and hold the front panel PREView button. See the voltage display toggle between
locked front panel (“LFP”) and unlocked front panel (“UFP”). Select a mode by releasing
the button when the desired mode is displayed.
5.12.2. Unlocked Front Panel
This is normal operating mode. The front panel controls are enable to program and
monitor the power supply parameters.
5.12.3. Locked Front Panel
When the front panel is locked, the following controls are DISABLED:
VOLTAGE and CURRENT encoders.
FOLD button.
OUT button
The power supply will not respond to attempts to use these controls. The VOLT display
will show “LFP” to indicate that the front panel is locked.
Other buttons, such as PREView and OVP/UVL may still be used to view settings.
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