5.1 Limit switches
The retrofit kit (order no. 1400-8830) is re
-
quired to install limit switches. If the actuator
is not already equipped with potentiometers
or a positioner, the basic unit (order no.
1400-8829) is also required. The unit in
-
cludes the spindle gear (2) and the interme
-
diate gear (5).
Note! To mount the limit switches, the actua
-
tor stem must be in end position, i.e. the
stem must be either fully extended or fully
retracted. If necessary, move the stem to the
appropriate position using the manual over
-
ride on the side.
1. Remove the fastening screws. Push the
actuator board (1) from its guiding to
the right. Slightly lift the board and con-
tinue pushing it further towards the cable
entry.
2. Clip the spindle gear (2) onto the sleeve
(3). Make sure the lateral latch is prop-
erly engaged in the groove of the sleeve.
3. Plug intermediate gear (5) onto the spin
-
dle (4). Place the serrated ring (10) on
top and push it down until it will not go
any further.
4. Plug both premounted contact cams (6)
with the ring gear first onto the cam
bracket (7).
5. Push adjustment gears (8) onto their
spindles and fasten with one screw
each. Check whether the adjustment
screws can be turned easily. If not,
slightly loosen the screw again.
6. Turn both contact cams (6) as illustrated
in Fig. 7.1 corresponding with the posi
-
tion of the actuator stem on the cam
bracket (7).
7. Push the spacer (9) onto the spindle for
the cam bracket. Push the cam bracket
with both cams onto the spindle corre
-
sponding with the position of the actua
-
tor stem as illustrated in Fig. 7.2. Make
sure that the outermost cog of the cam
bracket (7) engages in the gearwheel of
the intermediate gear (5). In addition,
the adjustment gears (8) must engage
properly in the corresponding gears of
the contact cams (6).
8. Secure the cam bracket (7) and interme-
diate gear (5) with the serrated ring
(10), pushing the ring down until it will
not go any further.
9. Position the terminal board (11) at the
base of the support at a 45° angle
(approx.) with the switches facing to-
wards the gears. Push the upper end of
the terminal board towards the gears
until the board is in a vertical position
and properly engaged in the support.
10.Push the actuator board (1) back into its
guiding. Make sure that the gears are
properly engaged. Fasten the board us
-
ing screws.
4
Adjust limit switches as described in sec
-
tion 4.2.1.
18 EB 8331-1 EN
Retrofitting additional electrical equipment
