Alarms And Monitoring; Definition Of Terms; Device Alarm And Event Handling - Elektro-Automatik PSI 9000 3U Betriebsanleitung

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 or
overheating protection, and user defined events such as OVD (overvoltage detection). Whilst device alarms serve
to protect the device by initially switching off the DC output, user defined events can switch off the DC output (Ac-
tion = ALARM), but can also simply give an acoustic signal to make the user aware. The actions driven by user
defined events can be selected:
Action Impact
NONE
User defined event is disabled.
On reaching the condition which triggers the event, the action SIGNAL will
SIGNAL
show a text message in the status area of the display.
On reaching the condition which triggers the event, the action WARNING
WARNING will show a text message in the status area of the display and pop up an
additional warning message.
On reaching the condition which triggers the event, the action ALARM will
show a text message in the status area of the display with an additional alarm
pop-up, and additionally emit an acoustic signal (if activated). Furthermore
ALARM
the DC output is switched off. Certain device alarms are also signalled to
the analog interface or can be queried via the digital interface.
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 indicated as a pop-up, tap OK.
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 acknowledge with OK.
In order to acknowledge an alarm during analog remote control, see „3.5.4.2. Acknowledging device alarms". To
acknowledge in digital remote, refer to the external documentation "Programming ModBus & SCPI".
Some device alarms are configurable:
Alarm Meaning Description
OverVoltage Triggers an alarm if the DC output voltage reaches the
OVP
Protection defined threshold. The DC output will be switched off.
OverCurrent
Triggers an alarm if the DC output current reaches the
OCP
Protection defined threshold. The DC output will be switched off.
OverPower
Triggers an alarm if the DC output power reaches the
OPP
Protection defined threshold. The DC output will be switched off.
These device alarms can't be configured and are based on hardware:
Alarm Meaning Description
AC supply over- or undervoltage. Triggers an alarm if the AC supply is out
PF Power Fail 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.
OverTem- Triggers an alarm if the internal temperature reaches a certain limit. The
OT
perature DC output will be switched off.
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Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
PSI 9000 3U Series
Example
Range
0 V...1.1*U
Nom
0 A...1.1*I
Nom
0 W...1.1*P
Nom
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Indication
Display, analog
IF, digital IF
Display, digital
IF
Display, digital
IF
Indication
Display, digital
IF
Display, analog
IF, digital IF
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