Page 52 of 192
The LA29 actuator is a HOMELINE
®
actuator specially made for domestic applications.
The actuator has a very short installation dimension as the distance between the two
fixing points is small when the actuator is retracted and at the same time independent
of the stroke length. This feature makes the actuator ideal as a lifting actuator for
self-lifting recliners.
Another special feature here is the flexible back fixture, which can adapt misalign-
ments in e.g. a recliner application.
The LA29 is compatible with various HOMELINE
®
control boxes.
Reed switch:
The Reed switch gives a number of pulses for each rotation of the motor. These pulses
are used to calculate the position as well as to control several actuators running in
parallel.
Your nearest LINAK dealer can inform the number of pulses per stroke length.
Regarding Reed-switch connection, see Figure 6.10.
Hall
The Hall principle is very similar to the Reed principle. A Hall sensor is based on a magnet that rotates. Two hall sensors are placed close to the
magnet field. The control box (CB20/CB6S OBF/CB16 OBF/CBD4/CBD5) can detect whenever the magnetic field changes direction.
The two Hall sensors are placed close to each other, but with a small displacement. This distance leads to a timing difference between the two pulses.
Whichever one of them comes first indicates the direction of movement. Therefore, there will be no error summary (as with the reed switch) Hall is
therefore a very precise system. Hall is not suitable for use in quick release actuators - see figure 10.
Built-in end-stop circuit
The end-stop switch is part of the actuator construction. Each time the actuator reaches end-stop position the switch is activated and the current is
cut off.
Warning
Do only use the actuator within specified working limits.
The LA28 Compact is a small and powerful actuator designed for use in system
solutions for healthcare equipment or industrial applications. Ideal applications are for
example wheelchairs, treatment chairs, patient lifts or beds.
Usage:
• Duty cycle: Max 10 % or max. 2 min. continuous use followed by 18 min. not in use.
• Ambient temperatures: + 5 °C to + 40 °C
• Compatibility: CB8, CB12, CB14 and CBJ
• Approvals: IEC 60601-1, ANSI/AAMI ES60601-1 and CAN/CSA-22.2 No 60601-1
Recommendations
• *LINAK control boxes are designed so that they will short-circuit the motor terminals of the actuator(s), when the actuator(s) are not running.
This solution gives the actuator(s) a higher self-locking ability. If the actuator(s) are not connected to a LINAK control box, the terminals of
the motor must be short-circuited to enable selflocking of the actuator.
• Min. stroke length for LA28 with splines is 80 mm
• The current supply to LINAK actuators must be cut off in case of overload and when the actuators reach end position.
• Ambient operating temperature is 22 °C.
• LA28 Compact cannot be used in pull applications, unless fitted with an aluminium back fixture.
“Crimped” piston rod eye
Piston rod without eye (are not tested)
Protective
cap
Further information:
Noise level:
• LA28: dB(A) 45; measuring method DS/EN ISO 3743-1, actuator not loaded
• LA28S: dB(A) 54; measuring method DS/EN ISO 3743-1, actuator not loaded
Material:
• The piston rod eyes are “crimped” in
place and cannot be screwed loose.
8. LA28 Compact (
MEDLINE
®
CARELINE
®
TECHLINE
®
)
9. LA29 (HOMELINE
®
)
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