Elektro-Automatik PS 9000 T Series, Operating Manual

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Page 54
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
ea1974@elektroautomatik.de
PS 9000 T Series
3.6 Alarms and monitoring
3.6.1 Device alarm handling
A device alarm incident will usually lead to DC output switch-off. Some alarms must be acknowledged (see below),
which can only happen if the cause of the alarm is not persistent anymore. Other alarms acknowledge themselves
if the cause has vanished, like the OT and the PF alarm.
► 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 „3.5.4.3. Acknowledging device alarms“ . To
acknowledge in digital remote, refer to the external documentation “Programming ModBus & SCPI”.
Some device alarms are configurable:
Alarm Meaning Description Range Indication
OVP
O ver V oltage
P rotection
Triggers an alarm if the DC output voltage reaches the
defined threshold. The DC output will be switched off.
0 V...1.1*U
Nom
Display, analog
IF, digital IF
OCP
O ver C urrent
P rotection
Triggers an alarm if the DC output current reaches the
defined threshold. The DC output will be switched off.
0 A...1.1*I
Nom
Display, digital
IF
OPP
O ver P ower
P rotection
Triggers an alarm if the DC output power reaches the
defined threshold. The DC output will be switched off.
0 W...1.1*P
Nom
Display, digital
IF
These device alarms can’t be configured and are based on hardware:
Alarm Meaning 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.
Display, analog &
digital interface
OT
O ver T em-
perature
Triggers an alarm if the internal temperature reaches a certain limit.
The DC output will be switched off.
Display, analog &
digital interface
► How to configure the device alarms
1.
While the DC output is switched off, tap the touch area on the main screen.
2.
In the menu tap on “ Settings ” and then on “ Protection Settings ”.
3.
Set the thresholds for the device alarms relevant to your application if the default value of 103% (OVP) resp.
110% (OCP, OPP) is unsuitable.
The set values can be entered using the ten-key tab. This will appear by tapping the touch area
“Direct input”.