User manual

Page 65
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
EL 9000 T Series
4.3.3.1 Set values
► How to calibrate the voltage
1. Adjust the connected voltage source to approx. 102% of the maximum
voltagespeciedfortheELdevice.Fortheexamplewithan80VELthis
would be 81.6 V for the source. Set the current limitation of the voltage
sourceto>5%ofthenominalcurrentspeciedforELdevice,forthis
example it is at least 2.3 A. Check again, that for voltage calibration, the
sensing connector (Sense) on the front of the device is not connected.
2. WhiletheDCinputisswitchedoffenterMENU,thentapon„Settings“,
then on “Page 2” and there on “Calibrate device”.
3. In the next screen select: Voltage calibration, then Calibrate input val. and NEXT. The load will switch
the DC input on and start to measure the input voltage (U-mon).
4. The next screen requests you to enter the measured input voltage at Measured value= from the multimeter.
Enter it using the keypad, that appears when tapping the value. Assure yourself the value is correct and
submit with ENTER.
5. Repeat step 4. for the next three steps (total of four steps).
► How to calibrate the current
1. Adjust the current source to approx. 102% nominal current of the EL device, for the sample model with 45 A
this would be 45.9 A, rounded to 46 A. Make sure the source can provide more current than the EL can draw,
else the source’s voltage will collapse. Set the output voltage of the current source to 10% of the nominal
voltagespeciedforEL,intheexample8V,andswitchtheDCoutputofthesourceon.
2. WhiletheDCinputisswitchedoffenterMENU,thentapon„Settings“, then on “Page 2” and there on
“Calibrate device”.
3. In the next screen select: Current calibration, then Calibrate input val. and NEXT. The load will switch
on the DC input and start to measure (I-mon).
4. The next screen requests you to enter the input current Measured value= measured with the shunt. Enter
it using the keypad, assure yourself the value is correct and submit with ENTER.
5. Repeat step 4. for the next three steps (total of four steps).
In case you are generally using the remote sensing feature (Sense), it is recommended to readjust this parameter
too, for best results. The procedure is identical to the calibration of voltage, except for it requires to have the sens-
ing connector on the rear to be plugged and connected with correct polarity to the DC input of the EL.
► How to calibrate the remote sensing voltage
1. Adjusttheconnectedvoltagesourcetoapprox.102%ofthemaximumvoltagespeciedfortheELdevice.
For example with an 80 V EL this would be 81.6 V for the source. Set the current limitation of the voltage
sourceto>5%ofthenominalcurrentspeciedforELdevice,forthisexampleitisatleast3A.
2. WhiletheDCinputisswitchedoffenterMENU,thentapon„Settings“, then on “Page 2” and there on
“Calibrate device”.
3. In the next screen select: Sense volt. calibration, then Calibrate input val. and NEXT.
4. The next screen requests you to enter the measured sensing voltage Measured value= from the multimeter.
Enter it using the keypad, that appears when tapping the value. Assure yourself the value is correct and
submit with ENTER.
5. Repeat step 4. for the next three steps (total of four steps).
4.3.3.2 Actual values
Actual values of the input voltage (with and without remote sensing) and the input current are calibrated almost
thesamewayasthesetvalues,buthereyoudon’tneedtoenteranything,butjustconrmthedisplayedvalues.
Please proceed the above steps and instead of “Calibrate input val.” select “Calibrate actual val.” in the sub-
menus. After the device shows the measured values on display, wait at least 2s for the measured value to settle
and then tap NEXT until you are through all steps.