User Manual

Page 90
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
► Step 2: Configuring the master unit
1. Enter , then GENERAL SETTINGS and press until reaching the master-slave settings.
2. Specify the unit as master with touch 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: Initializing the master
The master unit and the whole master-slave system must now be initialized, which is done automatically after the
master unit has been activated for MS. In the main page, after leaving the setting menus, a pop-up will appear:
Tapping Initialize repeats the search for slaves in case the detected number of
slavesislessthanexpected,thesystemhasbeenrecongured,notallslave
units are already set as Slaveorthecabling/terminationisstillnotOK.The
result window shows the number of slaves, plus the total current, power and
resistance of the MS system.
In case there are no slaves found, the master will still initialise the MS system
with only itself.
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 also be
repeated manually anytime via the MENU in GENERAL SETTINGS.
3.12.1.5 Operating the master-slave system
Aftersuccessfulcongurationandinitializationofthemasterandslaveunits,they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 terminal status
and a possible alarm.
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 initialization 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 like a standalone unit
• The master shares the set values etc. 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 (supervision, limits etc.) should be adapted to the new total values
• All initialised slaves 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modied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 values to what was before activating MS operation, it’s
recommended to make use of the user proles (see „3.10. Loading and saving a user prole“)
• 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analarmcausestheDCterminalstobeswitchedo󰀨and
it can only reinstate automatically after PF or OT alarms, it can be required to switch it on again by the operator
or by a remote control software.