Type 5821 Actuator
Follow the assembly steps listed below:
1. Unscrew the nameplate (1.4) on the actua-
tor.
NOTE
When delivered, the clamp ring (5.2) is
pushed upwards in the direction of the
motor, the connecting clamps (5.1) are
straddled and available for accommodat-
ing the plug stem and adapter rod.
2. Place the actuator on the control valve so
that the connecting clamps (5.1) slide
over the headpiece of the plug stem or
adapter rod.
3. Push clamp ring (5.2) downwards in the di-
rection of the control valve unit it stops so
that the connecting clamps close and are
locked in position. The clamp ring can be
moved, for example, by inserting a
screw driver at the elongated hole.
NOTE
To simplify this procedure, the connecting
clamps can be retracted or extended by
turning the handwheel (3) when pressing
the release button (2) at the same time. The
locking can also be checked using this tech-
nique.
4. After locking the actuator using the two
hexagon socket head screws (1.5), screw
on tight.
To remove the actuator, perform the steps
above in reverse order.
Type 5822 Actuator
Follow the assembly steps listed below:
1. Unscrew the nameplate (1.4) on the actua-
tor.
2. When delivered, the clamp ring (6.2) is
pushed upwards in the direction of the
motor, the connecting clamps (5.1) are
straddled and available for accommo-
dating the plug stem and adapter rod.
3. Place the actuator on the control valve so
that the connecting clamps (6.1) slide
over the headpiece of the plug stem or
adapter rod.
4. Slide the clamp ring (6.2) downwards in
the direction of the control valve until it
stops, causing the connecting clamps to
close and lock into position. The clamp
ring can be moved, for example, by in-
serting a screw driver at the elongated
hole.
5. After locking, press the actuator against
the control valve (spring mechanism must
be pushed together somewhat).
6. Screw on tight using the two hexagon
socket head screws (1.5).
NOTE
If the spring mechanism cannot be manually
pushed together any more (Type 5822-30),
the actuator rod must be electrically re-
tracted.
6. Check the locking by applying voltage to
the motor and moving the valve in the
OPENED and CLOSED positions ("actua-
tor stem retracts" and "actuator stem ex-
tends").
To remove the actuator, perform the steps
above in reverse order.
3. Electrical connections
Connect the electric wires using cable entries
(1.2) as depicted in the wiring diagram
(Figs. 8 and 8.1).
The controller output signals are connection
to terminals L1 and L2. If voltage is applied to
terminal L2, the actuator motor retracts the
connecting rod (5 or 6) and the plug stem of
the control valve in operating direction IN
"actuator stem retracts". If, in comparison, a
control signal is applied to terminal L1, the
connecting rod (5 or 6) is pushed down-
wards, i.e., operating direction OUT "actua-
tor stem extends".
Fig. 8.1 illustrates the connection diagram
relevant for versions with electric positioners.
Control signals of 4 to 20 mA or 0 to 20 mA
are connected to terminals 11 and 12. Con-
trol pressures 0 to 10 V are connected to ter-
minals 12 and 13. The operating direction of
the control signal can be adjusted on the po-
sitioner.
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