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EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
PSI 9000 2U Series
1.9
Construction and function
1.9.1
General description
The DC laboratory power supplies of the PSI 9000 2U series are especially suitable for test systems and industrial
applications due to their compact construction in a 19” enclosure with 2 height units. Apart from basic functions of
power supplies, set point curves can be generated in the integrated function generator (sine, rectangular, triangular
and other curve types). Arbitrary generator curves (100 points) can be saved to and loaded from an USB stick.
For remote control the devices are provided as standard with an USB port on the back side as well as a galvani-
cally isolated analog interface.
Via optional plug-in interface modules, other digital interfaces such as Profibus, ProfiNet, ModBus TCP, CAN,
CANopen or RS232 can be added. These enable the devices to be connected to standard industrial buses simply
by replacing or adding a small module. The configuration, if necessary at all, is simple. Thus the power supplies
may, for example, be operated with other power supplies or even other types of equipment or controlled by a PC
or PLC, all using the digital interfaces.
In addition, the devices offer as standard the possibility for parallel connection in Share bus operation for constant
current sharing plus a genuine master-slave connection with totalling of the slave units is also provided as standard.
Operating in this way allows up to 16 units to be combined to a single system with a total power of up to 48 kW.
All models are controlled by microprocessors for fast and exact measurement and display of actual values.
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, BE), which can be target of firmware updates.
Controller
(DR)
Commu-
nication
(KE)
HMI (BE)
DC
Power block
1...3
MS
Anybus /
GPIB (opt.)
USB
USB
Ana
log
AC
Share &
Sense
PSI 9000 2U/3U
Block diagram
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