Siko 6007422, Перевод оригинальной инструкции по установке

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AG02
Commissioning English
AG02 · Date 31.10.2012 · Art. No. 82270 · Mod. status 354/12
52
Trim potentiometer
Via two trim potentiometer's Po and Pe (see
Fig. 15
) these values can be
adjusted to the application's actual start and end position.
If the device is equipped with a resistance-current converter, then the
potentiometer resistance is converted into a current of 4 ... 20 mA. The
measuring current is also used for feeding the instrument transformer.
This measuring range corresponds to the transmission range of the poten-
tiometer wich is given by the customer.
Setting the instrument transformer (MWI)
When the screws
1
are removed and the cover
2
opened, the trim
potentiometers can be accessed.
1
Screws
2
Cover
3 Potentiometer
4
Driving shaft's
sense of rotation
after switching
on
Fig. 15: Setting the trim potentiometers MWI
Po

Pe = max.
2
= Po
Pe
S

0
1
3
4
• Trim potentiometer's Po is used to adjust a current of 4 mA to potenti-
ometer values of 0 to 15 % of the total range.
• Trim potentiometer's Pe is used to adjust a current of 20 mA to poten-
tiometer values of 90 to 100 % of the total range.
The smallest available potentiometer range
3
, in which 4 to 20 mA
are delivered, is hence 15 % to 90 % of the potentiometer's resistance
range.
NOTICE