User Manual

Page 75
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
ELR 9000 Series
► How to calibrate the voltage set value (U-Set)
1. Adjust the connected voltage source to 102% max. voltage of the ELR
device, for the sample model with 80V this would be 81.6V, rounded
to 82V. Make sure the source can not provide more current than the
ELR can draw, else the ELR can not pull down the sources’s voltage
for calibration.
2. In the display, tap MENU, then „General Settings“, then go to Page 5
and then tap START.
3. In the next screen select: Calibrate U-Set. The load will switch on the DC input and start to measure the
input voltage (U-Mon).
4. The next screen requests you to enter the measured voltage (U-Meas) from the multimeter. Enter it using
the keypad, assure yourself the value is correct and submit with ENTER. The device will run an automatic
self-calibration procedure on the parameter and tell you the result, whether successful or not.
If the externally measured value happens to be too different from the internally measured value (U-Meas), then
the calibration procedure will fail and the parameter can not be calibrated by the user. The same will happen when
trying to calibrate the voltage at an input value other than 100%.
► How to calibrate the set value of current (I-Set)
1. Adjust the current source to approx. 102% nominal current of the ELR device, for the sample model with
170A this would be 173.4A, rounded to 174A. Make sure the source can provide more current than the ELR
can draw, else the sources’s voltage will collapse.
2. In the display, tap MENU, then „General Settings“, then go to Page 5 and then tap START.
3. In the next screen select: Calibrate U-Set. The load will switch on the DC input and start to measure (I-Mon).
4. The next screen requests you to enter the current (I-Meas) measured with the shunt. Enter it using the
keypad, assure yourself the value is correct and submit with ENTER. The device will run an automatic self-
calibrating procedure on the parameter and tell you the result, whether successful or not.
If the externally measured value happens to be too different from the internally measured value (I-Meas), then the
calibration procedure will fail. The same will happen when trying to calibrate the current at an input value other
than 100%.
Once the set values of voltage and/or current are re-calibrated, the actual value can now be processed.
► How to calibrate the actual current (I-Monitor) or actual voltage (U-Monitor)
1. Adjust the voltage resp. current source to 102% of the max. ELR value, for example 82V resp. 174A.
2. In the display, tap MENU, then „General Settings“, then go to Page 5 and then tap START.
3. In the next screen select: Calibrate I-Monitor or Calibrate U-Monitor
4. Follow the on-screen instructions and tap NEXT.
5. The device will run an automatic self-calibrating procedure on the measuring channel of voltage or current
and tell you the result, whether successful or not.
After a parameter has been successfully re-calibrated, it is marked with
->DONE in the selection screen, like depicted in the gure to the right.
After calibration you may furthermore enter the current date as “calibration
date” by tapping the dedicated tough area in the selection screen and enter
the date in format YYYY / MM / DD.
Last but not least you should save the calibration data permanently by tap-
ping .
Leaving the calibration selection menu without “Save and exit” will discard all meas-
ured and entered calibration data!