NGPS – User’s Manual
27
1.7
Front Panel Indicators
The NGPS has four (4) front panel LED indicators as shown in
Figure 11:
Front panel LED indicators
The front panel indicators and their behaviour are hereafter listed (clockwise
•
STAT
(
green
): it signals the correct operation of the module diagnostics. The
blinking signaling the correct operation has a 1-second period;
•
OUT ON
(
blue
): it signals if the output is enabled or not. The blue LED is on
when the output is enabled and it is regulating either the output current or the
output voltage;
•
ALARM
(
red
): if turned on, it signals a fault condition experienced by the
power unit. It is necessary to perform a “reset fault” command in order to turn-
off this LED and to turn-on the module output again (only if the fault
condition/cause has been removed);
•
C.C.
(
blue
): if turned on, the NGPS is working in constant-current mode. When
off, it is regulating the output voltage (see
Section1.3.1
).
•
1.8
Internal Protections
The NGPS is equipped with several internal protections that allow configuring
the unit for optimal operation. These protections have the dual role of protecting the
unit and the connected load/device from undesired operation conditions.
A brief description of the NGPS internal protections is hereafter presented with
some more basic considerations on their operation and use.
