Samson 3375-10 - 6 Start-Up; Adjusting the Limit Contacts

EB 8332-1 EN 6-1
Start-up
6 Start-up
Once the actuator has been mounted cor-
rectly and the wiring has been performed as
described in the 'Installation' section, the
electric actuator is ready for use and can be
controlled by a three-step signal (see the
'Design and principle of operation' section).
6.1 Adjusting the limit contacts
1. Unscrew screws on housing cover and
take the cover off the actuator.
2. Connect supply voltage.
3. Use the motor or manual override to
move the actuator stem to the point at
which the contact should react.
4. Use a hex screwdriver to turn the spindle
of the adjustment gears (18) for the up-
per limit contact or for the lower limit
contact until the associated contact cam
(19) of the contact cam unit (21) triggers
the switch contact of the upper or lower
microswitch on the terminal board (17).
5. Replacecover.Brieyturnthefastening
screws counterclockwise with a screw-
driver to center them. Then fasten down
the cover by tightening the screws.
Actuator stem
retracted
Actuator stem
extended
19 1920
Fig.6-1: Contact cams and cam holder
B
18 21 1
When actuator stem retracted
B
18 21 1
When actuator stem extended
Fig.6-2: Contact cam unit
Fig.6-3: Terminal board · Limit contact (17)
1 Intermediate gear
18 Adjustment gear
19 Contactcam
20 Cam holder
21 Contact cam