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EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
EL 9000 B 15U/24U Series
5.3.3.1
Calibrating the set values
►
How to calibrate the voltage
1.
Adjust the connected voltage source to approx. 102% of the maximum
voltage specified 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 specified for EL device, for
this example it’s approx. 25 A. Check again, that for voltage calibration,
the sensing connector on the rear of the device isn
’t connected.
2.
In the display, tap MENU, then
General Settings
, then go down to
Calibrate device
and then tap
START
.
3.
In the next screen select:
Voltage calibration
, then
Calibrate input value
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 point 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 510 A model this would
be approx. 520 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 specified
for EL, in the example 8 V, and switch the DC input of the source on.
2.
In the display, tap MENU, then
General Settings
, then go down to
Calibrate device
and then tap
START
.
3.
In the next screen select:
Current calibration
, then
Calibrate input value
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 point 4. for the next three steps (total of four steps).
5.3.3.2
Calibrate the remote sensing
In case you are generally using the remote sensing feature (Sense), it’s 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 sensing
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 specified 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 specified for EL device, for this example it’s approx. 25 A. Check again,
that for voltage calibration, the sensing connector on the rear of the device isn’t connected.
2.
In the display, tap MENU, then
General Settings
, then go down to
Calibrate device
and then tap
START
.
3.
In the next screen select:
Sense volt. calibration
, then
Calibrate input value
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 point 4. for the next three steps (total of four steps).
5.3.3.3
Calibrating the actual values
The display values of the actual input voltage (with and without remote sensing) and input current are calibrated
almost the same way as the set values, but here you don’t need to enter anything, just confirm the displayed val-
ues. 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 2 seconds for the measured value to
settle and then tap NEXT until you are through all steps.
