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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
ea1974@elektroautomatik.de
PSI 9000 WR 3U Slave Series
1.9
Construction and function
1.9.1 General description
The electronic high performance power supplies of the PSI 9000 WR 3U Slave are designed to extend the power
of compatible models from series PSI 9000 WR 3U. The slave models are reduced to basic functions and will usu-
ally run in remote control from a master of a master-slave system. They can be added and connected to existing
devices of series PSI 9000 WR 3U.
By default, the devices have an USB port on the rear side which serves various purposes, such as servicing
(firmware updates), monitoring during master-slave operation or even remote control when the unit is being used
in stand-alone operation.
The additional USB port on the front side is used for quick access to all the DC output related parameters and
settings. The configuration via this port can be done with the included software
EA Power Control
(on USB stick)
or via any custom made control application.
The devices offer as standard the possibility for parallel connection in Share bus operation to achieve a constant
current sharing, plus a genuine master-slave connection with totalling of the slave units’ values on the master unit
from PSI 9000 WR 3U series. This kind of operation allows for up to 16 units to be combined to a single system
with a total power of up to 240 kW.
1.9.2 Block diagram
The block diagram illustrates the main components inside the device and their relationships.
There are digital, microprocessor controlled components (KE, DR, HMI), which can be target of firmware updates.
Controller
(DR)
Commu
‐
nication
(KE)
HMI
(BE)
DC
MS
USB
USB
AC
Share
&
Sense
PSI
9000
3U
Slave
Block
diagram
=
≈
Power
blocks
1.9.3 Scope of delivery
1 x Power supply device
1 x Share Bus plug
1 x Remote sensing plug
1 x 1.8 m USB cable
1 x Set of DC terminal covers
1 x Share/Sense terminal cover (only with models from 750 V)
1 x USB stick with documentation and software
1 x AC connector plug (clamp type)
1 x Set for strain relief (premounted)