Samson 3374 Mounting And Operating Instructions - 5.2 Potentiometers
5.2 Potentiometers
Actuators with a digital positioner cannot
be equipped with potentiometers!
To retrofit the potentiometers, an actuator
board with the appropriate potentiometers
and gears (12 and 13) is required.
If the actuator is not already equipped with
limit switches, the basic unit (order no.
1400-8829
) is also required. The unit in-
cludes the spindle gear (2) and the inter-
mediate gear (5).
1. Remove the fastening screws. Push the
actuator board (1) from its guiding to
the right. Take out the board and re-
place it with a board with poten-
tiometers.
2. Clip the spindle gear (2) onto the
sleeve (3) as illustrated in Fig. 7, top.
Make sure the lateral latch is properly
engaged in the groove of the sleeve.
3. Plug intermediate gear (5) onto the
spindle (4). Place the serrated ring (10)
on top and push it down until it will not
go any further.
4. The potentiometer gears (12 and 13)
with retaining rings must be put onto
their shafts corresponding with the
rated travel of the control valve. The
rated travel inscription “Nennhub 15“
(on the upper side with the retaining
ring) or “Nennhub 30“ (lower side)
must be legible from above (also see
Figs. 4 and 5).
5. Push the actuator board back into its
guiding. Make sure that the gears are
properly engaged. Fasten the board
using screws.
Adjust the potentiometer as described in
section 4.2.2.
10 5 2 13 12 1
10 5 2 13 12 1
Fig. 8
⋅
Version with potentiometer
1
Actuator board
2
Spindle gear
5
Intermediate gear
10 Serrated ring
12 Gear potentiometer 1
13 Gear potentiometer 2
18
EB 8331-1 EN
Potentiometers