User Manual

Page 57
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PSB 9000 2.5 kW Series
3.7 Alarms and monitoring
3.7.1 Denition of terms
There is a clear distinction between device alarms (see „3.4. Alarm conditions“) such as overvoltage protection or
overheatingprotection,anduserdenedeventssuchasOVD (overvoltage detection). Whilst device alarms serve
toprotectthedeviceortheconnectedloadorexternalsourcebyinitiallyswitchingo󰀨theDCterminal,userdened
eventscanswitcho󰀨theDCterminal(Action=ALARM),butcanalsosimplygiveanacousticsignaltomakethe
useraware.Theactionsdrivenbyuserdenedeventscanbeselected:
Action Impact Example
NONE Userdened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.
ALARM
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
theDCterminalisswitchedo󰀨.Certaindevicealarmsarealsosignalledto
the analog interface or can be queried via the digital interface.
3.7.2 Device alarm and event handling
Important to know:
Whenswitchingo󰀨theDCinput(insinkmode)ofthedevicewhileacurrentlimitedsourcestill
supplies energy, the output voltage of the source will rise immediately and due to response
andsettletimesine󰀨ect,theoutputvoltagecanhaveanovershootofunknownlevelwhich
might trigger the overvoltage shutdown OVP or overvoltage supervision event OVD, in case
these thresholds are adjusted to too sensitive levels
AdevicealarmincidentwillusuallyleadtoDCterminalswitch-o󰀨,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rst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 „3.6.4.3. Acknowledging device alarms“. To
acknowledge in digital remote, refer to the external documentation “Programming ModBus & SCPI”.
Somedevicealarmsarecongurable,separatelyforsourceandsinkmode:
Short Long Description Range Indication
OVP
OverVoltage
Protection
Triggers an alarm if the voltage on the DC terminal
reachesthedenedthreshold.TheDCterminalwill
beswitchedo󰀨.
0 V...1.1*U
Nom
Display, analog &
digital interface
OCP
OverCurrent
Protection
Triggers an alarm if the current in the DC terminal
reachesthedenedthreshold.TheDCterminalwill
beswitchedo󰀨.
0 A...1.1*I
Nom
Display, analog &
digital interface
OPP
OverPower
Protection
Triggers an alarm if the output or input power reaches
thedenedthreshold.TheDCterminalwillbeswitched
o󰀨.
0 W...1.1*P
Nom
Display, analog &
digital interface