Samson 3730 Series Mounting And Operating Instructions page 114

Start-up and configuration
Normally, the limit switch is adjusted in such a way that it will provide a signal in both end
positions of the valve. The switch, however, can also be adjusted to indicate intermediate
valve positions.
The required switching function, i.e. whether the output relay is to be picked up or released
when the tag enters the field, must be selected at the switching amplifier, if required.
Note
The inductive limit switch replaces the software limit switch A1 with terminal assignment
+41/–42.
Each switching position can optionally be set to indicate when the tag has entered the field
or when it has left the field.
The second software limit switch remains effective, the function of the software limit switch A1
is disabled.
Software adaptation
− Code 38 (inductive alarm is set to YES).
− The inductive limit switch is connected to the terminals +41/–42 (see the 'Installation' sec-
tion).
− The device is set up accordingly in the delivered state.
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.
7-18 EB 8384-3 EN