User manual

31
© 2009, Elektro-Automatik GmbH & Co. KG
EN
About the power supply
1. Introduction
The laboratory power supplies of the series PSI 8000 T are very
compact and rugged devices and incorporate interesting features
within small dimensions. Apart from standard functions of power
suppliestheusercandeneandrecalldifferentpresetsofset
values,supervisesetvaluesandactualvaluesbydenablelimits
or createfunction runsof congurable preset values withthe
integrated function manager.
The devices also feature an integrated analogue interface that
can handle the common voltage ranges of 0...5V or 0...10V.
This offers a way of easily monitoring the device as well as total
remote control. The logical levels of the digital inputs and the
outputcanbemodied.Outputpoweradjustmentispossibleat
models from 1kW.
The optionally available, digital interface cards for either CAN,
RS232, USB or GPIB/IEEE provide an even wider spectrum of
control and monitoring functions by means of a PC. Another optio-
nally available extension card is the galvanically isolated analogue
interface IF-A1 which can even better serve to control the device
by external means, like a PLC, as the internal interface.
The integration into existent systems is done very comfotably by
usinganinterfacecard,whilethereisnoneedtocongurethe
card at all or with only a few settings.
Via the analogue interface, the power supply can als be operated
in connection to other power supply units, controlling these via the
interface. Or they can be controlled and monitored by an external
control system, like a PLC.
The device is microprocessor-controlled and thus delivers fast
and accurate measurement and indication of actual values.
The tower design allows space-saving conceptioning of even
complex and highly productive applications, like for example
industrial test equipment with variable power for various de-
monstration and testing purposes in research & development or
educational areas.
The main functions at a glance:
» Set voltage and current, each with 0...100%
» Set power to 0...100%, at model from 1kW
» Adjustable overvoltage threshold 0...110% U
Nom
» Pluggable interface cards (CAN, USB, RS232, IEEE/GPIB)
» Analogue interface for external control and monitoring
with 0...5V or 0...10V (selectable) for 0...100%
» Powers of 320W, 640W, 1000W and 1500W
» Temperature controlled fan
» Status indication (OT, OV, CC, CV) in the display
» Standby mode
» 4 selectable memory sets, supervision function
» Function manager
» Adjustable internal resistance (optional)
2. Technicalspecications
2.1 Control panel
Type
Display Graphics display 128x64 dots
Operating controls: 6 pushbuttons, 2 rotary encoders
Displayed formats
The nominal values limit the maximum adjustable range.
Actual values and set values for voltage, current and power (at
models from 1kW) are displayed simultaneously, the set value of
the overvoltage threshold is displayed seperately.
Display of voltage values
Resolution: 4 digits
Accuracy: ±0,1% of U
Nom
±1 digit
Formats: 0.00V…99.99V
100.0…999.9V
Display of current values
Resolution: 4 digits
Accuracy: ±0.1% of I
Nom
±1 digit
Formats: 0.000A…9.999A
0.00A…99.99A
Display of power values
Resolution: 4 digits
Accuracy: ±0.15% of P
Nom
±2 digits
Formats: 0.0W...999.9W
0.000kW…9.999kW
Display of resistance values
(only with option: U/I/R)
Resolution: 4 digits
Accuracy: ±0.3% of Ri
Nom
±4 digit
Formats: 00.00mΩ…99.99mΩ
0.000Ω..9.999Ω
00.00Ω…99.99Ω
Time displays
Times are displayes in 4 automatically switched ranges.
Resolution:
Range 1: 2ms to 9.999 s
Range 2: 10ms to 59.99s
Range 3: 1:00m to 59:59min
Range 4: 1:00h to 99:59h
Accuracy:
Range 1: 2ms
Range 2: 10ms
Range 3: 1s
Range 4: 1 min