Front Panel Locking; Unlocked Front Panel - Delta D750 User Manual

User Manual
D750
DC Power Supply
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3.1.3 Front Panel Locking

The front panel controls can be locked to protect from accidental power supply parameter
change. Press and hold PREV button to toggle between "Locked front panel" and
"Unlocked front panel". The display will cycle between "LFP" and "UFP". Releasing
the PREV button while one of the modes is displayed, selects that mode.

3.1.3.1 Unlocked front panel

In this mode, the front panel controls are enable to program and monitor the power supply
parameters.
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PREV/ button
PREV indicator
FINE button
FINE indicator
ALARM indicator
AC Power switch
Main function: Press PREV to display the output
voltage and current limit setting. For 5 sec. the
display will show the setting and then it will return
to show the actual output voltage and current.
Auxiliary function: Front Panel Lock. Press and
hold PREV button to toggle between "Locked
front panel "and "Unlocked front panel". The
display will cycle between "LFP" and "UFP".
Releasing the PREV button while one of the
modes is displayed, selects that mode.
Green LED, lights when PREV button is pressed.
Voltage and Current Fine/Coarse adjustment
control. Operates as a toggle switch. In Fine mode,
the VOLTAGE and CURRENT encoders operate
with high resolution and in Coarse mode with lower
resolution (approx. 6 turns).
Auxiliary function: Advanced Parallel Operation
Mode setting.
Green LED, lights when the unit is in Fine mode.
Red LED, blinks in case of fault detection. OVP,
OTP Foldback, Enable and AC fail detection will
cause the ALARM LED to blink.
AC On/Off control.
UFP
3.1.3
3.4.2.2