DK Digital CDB-700 Bedienungsanleitung PDF herunterladen (Seite 35)

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7. LA29 (HOMELINE

)

The LA29 actuator is a HOMELINE actuator, specially made for domestic applications

like recliners.

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.

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.

6. LA28 Compact (

MEDLINE

CARELINE

TECHLINE

)

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° to + 40°C

• Compatibility: CB8, CB12, CB14 and CBJ

• Approvals: IEC 60601-1:2005, 3

edition, ANSI / AAMI

ES60601-1:2005, 3

edition and CAN / CSA-22.2

No 60601-1:2008 approved

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.

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