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EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
ELR 9000 HP Series
► Step 2: Configuring the master unit
1.
Enter
then GENERAL SETTINGS and press
until reaching
Page 11
.
2.
Specify the unit as master with tough area
. A warning requester will appear which has to be
acknowledged with OK, otherwise the change will be reverted.
3.
Accept the settings with the touch area
and return to the main page.
► Step 3: Initialising the master
The master unit and the whole master-slave system still need to be initialised. In the main screen of the master
unit, after quitting the setting menus, a pop-up will appear presenting the result of the first init run:
Tapping INITIALIZE will cause the master to search again for slaves and then
to configure itself by setting all necessary parameters. If more than one cor
-
rectly configured unit is found then this screen will show the number of slaves
and the combined total current and total power.
If no slaves are found or the display number of detected slaves is not as
expected, then the settings of the slaves and the master together with the
cabling must be checked and the setup process repeated.
The initialising process of the master and the master-slave system will, as long as MS mode is
still activated, be repeated each time the units are powered. The initialisation can be repeated
anytime via the MENU in GENERAL SETTINGS, PAGE: 12.
3.11.1.5 Operating the master-slave system
After successful configuration and initialisation of the master and slave units, these will show their status in the
displays. While the master merely shows “Master” in the status area, the slave(s) will continuously show like this,
as long they are in remote control by the master:
It means, as long as a slave unit is in control by the master, it won’t display
any set values, but actual values, and it will show the DC input status and
possible alarms.
The slaves can no longer be controlled manually or remotely, neither via the analog nor via digital interfaces. They
can, if needed, be monitored by reading actual values and status.
The display on the master unit changes after initialisation and all set values are reset. The master now displays
the set and actual values of the total system. Depending on the number of units, the total current and power will
multiply. The following applies:
•
The master can be treated as a standalone unit
•
The master shares the set values across the slaves and controls them
•
The master is remotely controllable via the analog or digital interfaces
•
All settings for the set values U,I and P (monitoring, settings limits etc.) will be adapted to the new total values
•
All initialised slave will reset any limits (U
Min
, I
Max
etc.), supervision thresholds (OVP, OPP etc.) and event settings
(UCD, OVD etc.) to default values, so these don’t interfere the control by the master. As soon as these values
are modified on the master, they are transferred 1:1 to the slaves. Later, during operation, it might occur that
a slave causes an alarm or event rather than the master, due to imbalanced current or slightly faster reaction
In order to easily restore all these settings after leaving MS operation, it is recommended to
make use of the user profiles (see „3.9. Loading and saving a user profile“
•
If one or more slaves report an device alarm, it will be displayed on the master and must be acknowledged there
so that the slave(s) can continue their operation. Since most alarms cause the DC inputs to be switched off and
the can only be reinstated on the master unit, user interaction (operator) may be required or alarm handling by
a remote control software.
