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10
How to set TAM
1. Connect a milli-amp meter on terminal block.
2. Always start by adjusting the 4mA.
3. Drive actuator to the position corresponding to the 4 mA
(CLOSED position).
4. Untighten the potentiometer pinion blocking screw. Adjust the
potentiometer shaft so that the output current reaches a
minimum value.
5. Turn backwards until the current value regularly increases
then turn backwards again and stop as soon as the minimum
value determined here above is reached and tighten back the
potentiometer pinion blocking screw.
The potentiometer is then positioned at the very beginning of
its track.
6. Then, use the TAM adjustment screw marked as 0/4mA to
adjust the current to a value as close to the 4 mA as possible.
7. Drive actuator to the position corresponding to the 20 mA
(open position).
8. Turn the screw marked 20mA in order to read exactly 20 mA
on the milli-amp meter.
9. Come back to the closed position and check that, for the 0%
position, the signal current shows a close to 4 mA and
repeatable value.
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