EPS Stromversorgung 06230204, Operating Manual, Page: 63 / 66

Page 63
EPS Stromversorgung GmbH
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Germany
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info@eps-germany.de
PS 9000 2U Series
4.3.3.1 Set values
► How to calibrate the voltage
1.
Connect a multimeter to the DC output. Connect a load and
set it to approx. 5% of the nominal current of the power supply
as load current, in this example let’s use 5 A.
2.
In the display enter the setup menu with , then push
button . In the submenu navigate to “ Calibrate Device ”, then “ Voltage calibration “.
3.
In the next screen select “ Calibrate output value ” and confirm with . The power supply will switch the
DC output on, set a certain output voltage and start to measure it ( U-mon ).
4.
The next screen requests you to enter the measured output voltage from the multimeter at Measured data= .
Adjust it using the right-hand rotary knob, like would adjust a set value. Assure yourself the value is correct
and submit with
.
5.
Repeat step 4. for the next three steps (total of four steps).
Should the externally measured value be too different from the internally measured value ( U-mon ), then the cali-
bration procedure will fail and the parameter can not be readjusted by the user.
► How to calibrate the current
1.
Set the load to approx. 102% nominal current of the PS device, for the sample model with 120 A this would
be 122.4 A, rounded to 123 A.
2.
In the display enter the setup menu with , then push button . In the submenu navigate to “ Cali-
brate Device ”, then “ Current calibration ”.
3.
In the next screen select “ Calibrate output value ”. The device will switch on the DC output, set a certain
current limit while loaded by the load or sink and start to measure the output current ( I-mon ).
4.
The next screen requests you to enter the output current Measured data= measured with the shunt. Adjust
it using the right-hand rotary knob, like would adjust a set value. Assure yourself the value is correct and
submit with
.
5.
Repeat step 4. for the next three steps (total of four steps).
Should the externally measured value be too different from the internally measured value ( I-mon ), then the cali-
bration procedure will fail.
In case you are generally using the remote sensing feature, it is recommended to also readjust this parameter
for best results. The procedure is identical to the calibration of voltage, except for it requires to have the sensing
connector (Sense) on the rear to be plugged and connected with correct polarity to the DC output of the PS.
► How to calibrate the remote sensing voltage
1.
Connect a load and set it to approx. 3% of the nominal current of the power supply as load current, in this
example ~4 A. Connect the remote sensing input (Sense) to the load with correct polarity.
2.
Put external multimeter in DC connection on the load.
3.
In the display enter the setup menu with , then push button . In the submenu navigate to “
Cali-
brate Device
”, then “
Sense volt. calibration
”. Push again.
4.
In the next screen select “
Calibrate output value
”.
5.
The next screen requests you to enter the measured sensing voltage Measured data= from the multimeter.
Adjust it using the right-hand rotary knob, like would adjust a set value. Assure yourself the value is correct
and submit with
.
6.
Repeat step 5. for the next three steps (total of four steps).