EPS PSI 10000 4U, Operating Manual

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Page 64
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PSI 10000 4U Serie
3.6 Alarms and monitoring
3.6.1 Definition of terms
There is a clear distinction between device alarms (see “3.3. Alarm conditions“ ) such as overvoltage protection
OVP or overheating protection, and user defined events such as OVD (overvoltage detection). Whilst device alarms
only switch off the DC output, user defined events can do more. They can also switch off the DC output ( Action =
Alarm ), but can alternatively simply give an acoustic signal to make the user aware. The actions driven by user
defined events can be selected:
Action Impact Example
None
User defined event is disabled.
Signal
On reaching the condition which triggers the event, the action Signal
will show a text message in the status area of the display.
Warning
On reaching the condition which triggers the event, the action Warning
will show a text message in the status area of the display and pop up
an additional warning message which can be noticed from a bigger
distance.
Alarm
On reaching the condition which triggers the event, the action Alarm
will show an alarm pop-up and additionally emit an acoustic signal,
if activated. Furthermore the DC output is switched off. Most of the
device alarms are signaled on the analog interface, while all can be
queried via the digital interfaces.
3.6.2 Device alarm and event handling
A device alarm incident will usually lead to DC output switch-off, the appearance of a pop-up in the middle of the
display and, if activated, an acoustic signal to make the user aware. An alarm must always be acknowledged.
► How to acknowledge an alarm in the display (during manual control)
1.
If the alarm is currently shown as pop-up, tap Acknowledge .
2.
If the alarm has already been acknowledged, but is still displayed in the status
area, then first tap the status area to display the pop-up, and then Acknowl-
edge .
In order to acknowledge an alarm during analog remote control see
“3.5.4.2. Acknowledging device alarms“
. To
acknowledge in digital remote control, refer to the external documentation “Programming ModBus & SCPI”.
Some device alarms are configurable:
Short Long Description Range Indication
OVP
O ver V oltage
P rotection
Triggers an alarm as soon as the DC output voltage reaches
the OVP threshold. The DC output will be switched off.
0 V...1.1*U
Nom
Display,
analog &
digital inter-
face
OCP
O
ver
C
urrent
P
rotection
Triggers an alarm as soon as the DC output current reaches
the OCP threshold. The DC output will be switched off.
0 A...1.1*I
Nom
OPP
O
ver
P
ower
P
rotection
Triggers an alarm as soon as the DC output power reaches
the OPP threshold. The DC output will be switched off.
0 W...1.1*P
Nom
These device alarms can’t be configured and are based on hardware:
Short Long Description Indication
PF P ower F ail
AC supply over- or undervoltage. Triggers an alarm if the AC supply is out of
specification or when the device is cut from supply, for example when switching
it off with the power switch. The DC output will be switched off which could
be only temporarily, depending on the situation and setting State after PF
alarm (see 3.4.3.1 ).
Display,
analog &
digital inter-
face