User manual

Page 38
ELR/ELM 5000 Series
www.elektroautomatik.de
[e-mail]
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
3.8.2.1 General procedure
Followingprocedureisrequiredforthecongurationofthesequencegenerator(SEQ)andthesequencerun:
1. Check and set the global conditions for the sequence run:
a. Adjust set values for U, I and P in the main screen of the load module. These apply after an automatic or
manual sequence stop and as long as the DC input is still switched on. Also see below at „3.8.2.3. Behaviour“.
b. Adjust protection values, such as OVP, OCP and OPP in order to avoid affecting the sequence run just from
theirvalue.AlarmsexceedingthesethresholdscanoccurthesamewayintheSEQandwillswitchoffthe
DC input and stop the sequence run.
2. Select the sequence generator in the MENU (page 2). This can only be done while the DC input is off.
3. Congure all necessary sequence points (if not done yet).
4. Congure the sequence run.
5. Load the sequence (the electronic load module won’t switch on the DC input after loading).
6. Control the sequence generator.
a. Start the sequence either with touch area “Start” or with pushbutton “On/Off”.
b. Stop the sequence at will, i.e. manually, or let it run until the end (all points and repetitions processed)
where it will automatically stop. A manual stop can be done two ways, either with touch area “Stop” or with
pushbutton “On/Off”, while there is a difference:
• “Stop”: the sequence will stop immediately, the DC input remains switched on, the set values of U, I and
Pfromthemainscreensetting(seestep1.)willbesetandtheSEQcannotbeleftyet.
• “On/Off”:thesequencewillstopimmediately,theDCinputwillbeswitchedoffandtheSEQcanbeleft
7. Exit the sequence generator.
a. This can only be done after the sequence run has been stopped and the DC input has been switched off.
3.8.2.2 Limitations
Following limitations apply:
• In case a sequence run is stopped anywhere in the middle, the sequence cannot be continued and will be pro-
cessed from the very beginning at the next start
3.8.2.3 Behaviour
After loading a sequence and before starting the sequence run, the DC input of the load module is generally
switched off and will automatically be switched off when starting. However, when stopping a sequence with the
touch area “Stop”, which only stops the sequence run, the DC input remains on and the device will set certain U,
I and P values.
Following possible scenarios:
Desired behaviour Solution
The load module shall not draw any current after the stop Set the current set value to 0 in the main screen, before
enteringtheSEQ
Theloadmoduleshalldrawaspeciccurrentafterthe
stop
Setthecurrentsetvaluetoyourdesired,specicvalue
inthemainscreen,beforeenteringtheSEQ
The load module shall draw the same current after the
stop as in the last processed sequence point
Set the current set value to the same value as in the
last sequence point you congured for the sequence
run. After every change to the start or end point or when
altering the settings of the last sequence point, you
would have to return to the main screen and adapt the
set value of current value again. This behaviour won’t
unfortunately work as expected in case the sequence
run is stopped before the last point, perhaps due to an
alarm or manual stop.