Samson 3730 Series Mounting And Operating Instructions page 110

Start-up and configuration
Adjusting the switching point
Note
During adjustment or testing, the switching point must always be approached from mid-posi-
tion (50 %).
To guarantee the switching under all ambient conditions, adjust the switching point approx.
5 % before the mechanical stop (OPEN – CLOSED).
For CLOSED position:
1. Initialize the positioner.
2. Move the valve to 5 % in the MAN mode (see display).
3. Adjust the tag at the yellow adjustment screw (2) until the tag enters or leaves the field
and the switching amplifier responds.
You can measure the switching voltage as an indicator.
Contact function:
− Tag leaving the field > contact is closed.
− Tag entering the field > contact is opened.
For OPEN position:
1. Initialize the positioner.
2. Move the valve to 95 % in the MAN mode (see display).
3. Adjust the tag (1) at the yellow adjustment screw (2) until the tag enters or leaves the
field of the proximity switch (3).
You can measure the switching voltage as an indicator.
Contact function:
− Tag leaving the field > contact is closed.
− Tag entering the field > contact is opened.
7-20 EB 8384-4 EN