LK Armatur LK 950 Série Manuel D'instruction page 2

GB ENGLISH
Functional Description
LK 950 is a series of compact actuators designed to motorize
rotary mixing valves. The actuator is controlled by means of
a modulating signal 2 (0)-10 VDC. LK 950 fi ts most rotary
valves. Alternative mounting kits can be supplied as option.
Technical Data
Power supply
Control signal/Posi-
tion signal
Dimensioning
Power consumption
Connection
Direction of operation
Manual override
Torque
Angle of rotation
Running time*
Sound level
Position indication
Mounting position
Accessories*
Protection type
Protection class
Ambient temperature
Storage temperature
Safety
* = Depending on model
Mounting instruction
1. Turn the spindle of the valve A counter clockwise to the
end position (OPEN or CLOSED). Remove the handle
supplied with the valve body from the valve spindle.
2. Screw the anti-rotation stop B in a convenient hole on
the valve (if necessary remove an existing screw).
3. Slide the linkage C over the valve spindle.
4. Place the actuator D onto the linkage C and if necessary
rotate it slightly clockwise until the antirotation stop B
engages in the slot of the actuator (the actuator is
supplied in the anti-clockwise position).
5. Turn the scale E into the position relevant to the
requested function (OPEN/ CLOSED) and place it
onto the actuator.
6. Place the handle F onto the actuator ensuring that
the arrow points to the left end position of the scale.
Tighten the whole unit by means of the screw G.
7. Using a screwdriver (No. 3) turn the disengaging but-
ton on the housing cover from «A» to «Hand Symbol»
position and rotate the valve by means of the handle F
from one end position to the other. It is important that
the actuator can be moved from one end stop to the
other (90°).
8. Connect the actuator to the power supply.
9. Turn the disengaging button back to the«A» position
and the actuator will turn in the required position.
24 VDC/VAC 50/60 Hz
2 (0) - 10 VDC, max 0,5 mA
3 VA
1.5 W
Terminal block
Selectable
Disengagement of gears
5 Nm
90°, electrically limited
35 / 70 s
Max. 35 dB(A)
Reversible scale
Selectable except below the valve
Alternative mounting kits
IP 40
III (SELV)
0 ... +50°C
-10°C ... +80°C
CE (see Declaration of Conformity)
Operation
The actuator can be mounted in any position except
below the valve. Thanks to its small size and compact
form the LK 950 fi ts most installations.
The actuator is mounted directly onto the valve spindle
with a screw. An anti-rotation bolt is screwed
onto the valve. The angle of rotation is limited to 90°. When
the actuator reaches either end position the voltage supply
is interrupted by limit switches. The actuator can be put
into manual mode by turning the button on the housing
cover which will disengage the gears. The actuator can now
be put in any position by turning the handle on the front
and this position is indicated by means of a reversible scale.
Wiring diagram
24 VAC
24 VDC
Control signal
Styrsignal från regulator
Position feedback
Utsignal för lägesindikering
GND
GND
~
Y U
-
+
1 2 3 5
LK 950 proportionell
LK 950 Proportional
Switch 1
Switch 1
Brytare 1
Switch 2
Switch 1
Brytare 1
Switch 2
Brytare 2
Switch 2
Brytare 2
*) Factory setting
*) Fabriksinställning
Factory setting
A B C D
]
0-10 VDC
2-10 VDC
All applicable legal or institutional
installation regulations must be
complied with.
Direction of rotation
Counterclockwise *)
Clockwise
Direction of rotation
Gångriktning
Counter-clockwise *)
Moturs *)
Clockwise
Medurs
Operating range
Operating range Arbetsområde
2-10 VDC *)
2 - 10 VDC *)
0-10 VDC
0 - 10 VDC
E F G