Bernard Controls AQ Serie Guía De Inicio página 9

How to set the potentiometer circuit board
You can set the zero of the potentiometer with the 0% position
screw. Use a flat blade screwdriver to turn this screw.
1. Drive the actuator to the CLOSED position.
2. Untighten the positioner pinion blocking screw.
3. Adjust the potentiometer by turning its shaft so that the
resistance value exceeds 0 Ohm and regularly increases then
turn backwards to reach the closest value to 0 Ohm. Tighten
back the positioner pinion blocking screw.
4. Drive the actuator to the OPEN position and write down the
resistance value corresponding to the 100% position.
5. Come back to the CLOSED position and check that the
resistance shows a repeatable near zero value for the 0%
position.
Position feedback potentiometer (Left) & TAM position transmitter (Right)
Signal inversion
To change the signal variation direction, invert potentiometer wires
on the terminal block (e.g. for a connection on 16/17/18,
invert 16 and 18).
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