111 6187 050 E
5
A 15
Connection and mounting
(When supplied individually)
Valve:
Push valve stem to lowest position.
Caution
:
Valve stem rotation may damage valve seat!
Actuator:
•
Screw nut on to stem extension and screw as far as possible into the actuator coupling.
•
Electrically connect actuator and drive to mounting position 106 mm. For model with positioner, adjust
potentiometer “B” to achieve mounting position, if necessary.
•
Place the ring nut with the machined surface downward, onto the valve crossbar.
•
Place the actuator completely onto the valve and align (the stanchions of the yoke must be aligned in the
direction of flow when the actuator is mounted in the upright position. When mounted in the horizontal
the stanchions must be aligned vertically, one above the other.). Tighten the ring nut.
•
Screw out the stem extension until it abuts the valve stem thereby observing the position of the
machined surfaces.
•
Fit the coupling halves and counter lock the M14 nut against the coupler
•
Fix the stroke indication plate.
Valve actuator with positioner:
•
Should the actuator stem retract automatically with power on, disconnect electrically and rotate reverser
plug ”ST1” 180° (RA for reverse- and DA for direct action) then re-connect the actuator.
•
The (0…10V DC) control signal to the actuator is connected to terminal 56 (pos.) and terminal 57 (neg.)
Setting the sequence range:
factory setting 0-10V DC
The positioner can be driven within the sequence range. Any sequence position can be taken up within the
maximum ranges of 0…10V DC but the sequence may not fall below 2V.
•
Connect the voltmeter to terminal 61 (pos.) and terminal 58 (neg.). The
actual set point
will be displayed
on the volt meter
•
Set the desired upper reference set point and wait until the actuator is at rest.
•
Retract the actuator stem by turning potentiometer “A” until switch “S2” is operated (check continuity
between terminal 17 and terminal 3) and the difference between the actual set point and the reference
set point is lesser 0.3V DC
Settings should be carried out in the smallest possible steps and always wait until the actuator is at rest
•
Set the desired lower reference set point and wait until the actuator is at rest.
•
Retract the actuator stem by turning potentiometer “B” until switch “S1” is operated (check continuity
between terminal 16 and terminal 2) and the difference between the actual set point and the reference
set point is lesser 0.3V DC.
Settings should be carried out in the smallest possible steps and always wait until the actuator is at rest
•
To test, first set the upper and then the lower reference set points each time waiting until the actuator is
at rest before taking readings of continuity between terminal 17 and 3 and also terminal 16 and 2
respectively
Note!
Switches “S1” and “S2” must be operated when the actuator is driven to upper and lower end position by
means of electronic positioning, this can be verified by measuring continuity between respective terminals.
Tolerance between actual voltage reading and the reference setting is 0.3V DC. Feedback is not potentially
separated from input. The light emitting diodes (LED’s) facilitate limit-switching adjustment especially for
sequence of operation. The red LED is illuminated when actuator stops. The green LED is illuminated when
actuator is in operation and also when the limit switches have been operated (this gives assurance that the
end position has been achieved).
WARNING
Actuator damage hazard
Do not operate the actuator when
NOT
mounted on a valve. This
actuator is pressure controlled. Limit switches calibrated to operate at
a certain force switch off the motor when this exact mechanical
pressure has been achieved
.