User manual

Page 26
PSI 9000 DT 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
1.9 Construction and function
1.9.1 General description
The DC laboratory power supplies of the PSI 9000 DT series are especially suitable for the use in test and devel-
opment applications, in laboratories, research and industry. The robust enclosure with its carrying handle, which
also serves as tilt stand, adapts in shape and look to measuring devices of established manufacturers.
Apart from basic functions of power supplies, set point curves can be produced in the integrated function genera-
tor (sine, rectangular, triangular and other curve types). Arbitrary curves can be stored on and uploaded from a
USBashdrive.
For remote control using a PC or PLC the devices are provided as standard with a USB-B and Ethernet (LAN) port
onthebacksideaswellasagalvanicallyisolatedanaloginterface.Thecongurationoftheinterfaces,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.
All models are controlled by microprocessors. These enable an exact and fast 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rmwareupdates.
Power block
Controller
(DR)
Commu-
nication
(KE)
HMI (BE)
DC
USB USB
Ana
log
PSI 9000 DT
Block diagram
ETH
AC
=
≈
Sense