MR TAPCON 250 - Page 159

9 Operation
Maschinenfabrik Reinhausen GmbH 2022 1598595028/00 EN TAPCON
®
250
Pos. at min. analog signal
You can use this parameter to set the tap position of the on-load tap-
changer corresponding to the minimum analog signal (e.g. 4mA for
4...20mA signal).
1. Go to Settings > Analog tap position capture > Pos. at min. analog
signal.
2. Set the tap position.
3. Press the Accept button to save the modified parameter.
9.4.1.2.1.2 Resistor contact series
Carry out the calibration at an ambient temperature that corresponds to nor-
mal operating conditions. This allows you to reduce measurement errors
due to temperature fluctuations.
To capture the tap positions via resistor contact series, you need to perform
a calibration. In order to do this, you have to set the on-load tap-changer's
tap positions corresponding to the maximum and minimum analog signal.
Then you have to carry out on-load tap-change operations across the entire
tap position range. The entire calibration process is performed using wiz-
ards.
1. Go to Settings > Calibrate hardware > Calibrate RCS .
2. Select the Pos. at max. analog signal parameter.
3. Set the tap position.
4. Press the Accept button to save the modified parameter.
5. Select the Pos. at min. analog signal parameter.
6. Set the tap position.
7. Press the Accept button to save the modified parameter.
8. Click on the Start button.
ð The calibration wizard is started.
9. Press the Next button.
10. Step 1: Manually switch on-load tap-changer to the highest tap position.
11. Press the Next button.
ð Step 2: The device calibrates the current output and once complete
moves on to step3.
12. Step 3: Manually switch the on-load tap-changer to the lowest tap posi-
tion.
ð Step 4: The device determines the offset and once complete moves
on to step5.