Samson 3730-4 - Initialization

EB 8384-4 EN 81
Adjusting the limit switch
The required switching function, i.e. whether
the output relay is to be picked up or re-
leased when the tag enters the eld, must be
selected at the switching amplier, if re-
quired.
Adjusting the switching point:
During adjustment or testing, the switching
point must always be approached from
mid-position (50%).
To guarantee the switching under all ambient
conditions, adjust the switching point ap-
prox. 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 eld and the switching amplier re-
sponds.
You can measure the switching voltage
as an indicator.
Contact function:
− Tag leaving the eld > contact is closed.
− Tag entering the eld > 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 adjust-
ment screw (2) until the tag enters or
leaves the eld of the proximity switch
(3).
You can measure the switching voltage
as an indicator.
Contact function:
− Tag leaving the eld > contact is closed.
− Tag entering the eld > contact is
opened.
9.1 Retrotting an inductive
limit switch
Required retrot kit:
Limit switch Order no. 1400-7460
The same requirements apply to retrotting
an inductive limit switch as to servicing the
positioner. For explosion-protected position-
ers, the requirements in section11 „Servic-
ing explosion-protected devices“ need to be
kept. Check the "Limit switch, inductive" box
on the nameplate after installing the limit
switch.
Note
Note