Alarms And Supervision; Definition Of Terms; Device Alarm Handling - elektroautomatik PS 5080-05 A Betriebsanleitung

3.6

Alarms and supervision

3.6.1

Definition of terms

Device alarms (see „3.3. Alarm conditions") are defined as conditions like overvoltage or overtemperature, which
can occur in relation to protection feature with partly adjustable thresholds.
The alarms are always indicated in the front display and are as well available as readable status via digital interface
when controlling or just monitoring remotely.
3.6.2

Device alarm handling

A device alarm incident will lead to DC output switch-off in most cases. The alarm must always be acknowledged,
which can only happen if the cause of the alarm is not persistent anymore. Ways to acknowledge:
• in manual control by switching the DC output on again or just by pushing button On/Off.
• in digital remote control by sending a specific command to acknowledge alarms (ModBus), usually after the
actual alarm has been recorded.
Some device alarms are configurable by adjusting a threshold. This is described in „3.4.4. Manually configure
protections":
Alarm Meaning Description
Triggers an alarm if the DC output voltage reaches the defined threshold.
OverVoltage
OVP This can be caused by the device being faulty or by an external source.
Protection
The DC output will be switched off.
OverCurrent
Triggers an alarm if the DC output current reaches the defined threshold.
OCP
Protection The DC output will be switched off.
OverPower riggers an alarm if the DC output power reaches the defined threshold. The
OPP
Protection DC output will be switched off.
These device alarms can't be configured and are based on hardware:
Alarm Meaning Description
Only available with 640 W models.
AC supply over- or undervoltage. Triggers an alarm if the AC supply is out of specification
PF Power Fail
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.
Triggers an alarm if the internal temperature reaches a certain limit. The device will also
OverTem-
OT
stop supplying power for an uncertain time and until it has cooled down again, in order to
perature
automatically continue supply afterwards.
Remote sense error. Triggers an alarm in case the remote sense connection to the load
or the sense bridges on the rear is interrupted (bridges have to be placed when remote
sense is not used) or in case the remote has reached the maximum possible compensa-
SE Sense
tion. This can only happen with the DC output being switched on. If the alarm occurs, the
DC output is not switched off. This is just to inform the user that the voltage on the load
can not be regulated to the adjusted output voltage.
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
PS 5000 A Series
www.elektroautomatik.de
ea1974@elektroautomatik.de
Range
0 V...1.1*U
Nom
0 A...1.1*I
Nom
0 W...1.1*P
Nom
Page 32