9.3
Reversing
By turning the reversing plug (see Fig. 24), the
direction of rotation is reversed by 180 de-
grees, i. e. the motor’s direction of travel is
reversed with regard to the set point.
– Disconnect actuator from the supply voltage.
– Remove reversing plug, turn by 180 de-
grees and plug back in.
– Reconnect actuator to supply voltage .
– If required, correct with Poti "A" or "B".
9.4
Sequential mode
You can also operate the positioner in sequen-
tial mode. The lowest range is 2 V or 4 mA.
The position of the sequence within the range
of 0 to 10 V or 4 to 20 mA is arbitrary. Use
the trimming potentiometers "A" and "B" to
adjust the respective final value.
The upper range value must be adjusted first.
Use the potentiometer "A" to adjust the upper
range sequential mark. Use the potentiometer
"B" to adjust the lower range sequential mark.
10
Maintenance and service
The gearing and the actuator stem must be re-
lubricated after approx. 200
,
000 double
strokes. We recommend the following lubri-
cants:
– Standard and tropics version:
Klüber Microlube GL 261
– Oxygen version:
BARRIERTA L55/3 OX.
Do not attempt to repair the linear actuator on
site. Defective actuators must be sent together
with a fault report including the product num-
ber to SAMSON AG.
!
WARNING!
Before you remove the cover and
prior to any maintenance and adjust-
ments, disconnect the supply voltage
to the actuator.
Ensure that the actuator cannot be
switched on again accidentally!
'
&.