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10. LA31 (MEDLINE
®
CARELINE
®
The LA31 is a compact, quiet and powerful actuator designed for a variety of applications
in the MEDLINE
®
& CARELINE
®
segment, such as hospital beds, couches and nursing
home beds.
The standard LA31 actuator features known parts such as piston rod eye with slot, and
comes in different variations with e.g. fast motor and hall positioning. The LA31 actuator
has exchangeable cables and is ideal in combination with OpenBus™ control boxes.
The LA31 actuator has an ingress protection of IPX6 and is available in version with up to
6000N in push or 4000N in pull.
Usage
• Duty cycle: Max 10 % or 2 minutes continuous use followed by 18 minutes not in use
• Cycles: The LA31 life cycle test has been performed with a stabilised power supply
(10 % duty cycle) on a 200 mm stroke actuator at max. load for 10,000 cycles
(at ambient temperature)
• Ambient temperature: + 5 °C to + 40 °C
• Compatibility: Compatible with LINAK control boxes. Please contact LINAK
• Approvals: IEC 60601-1, ANSI/AAMI ES60601-1 and CAN/CSA-22.2 No 60601-1
The product is not designed for dynamic load changes (from push to pull or vice versa. If the application design requires a product with a dynamic
load change capability, please contact LINAK for investigation of product feasibility or guidance.
Recommendations
• The release cable has to be provided by the customer.
• The design of the release cable has to be as specified.
• It is important to observe the max. active (the moving part of the cable) cable length of 12 mm. Do not pull more than this length otherwise the QR
will be damaged!
• The force required to operate the Quick Release is approx. 5 kg.
• When more than the recommended 5 kg force is used to activate the QR, more friction will be created in the internal actuator/QR mechanism.
This means that a greater load will be required to ensure successful operation.
• The QR cover is supplied attached to the actuator but not mounted.
• LA31 with external quick release, types I, K, L, and M can maximum pull 200 N.
• The necessary release force on an actuator with 5 mm pitch is 75 kg for 6 mm pitch = 50 kg.
• It is not possible to combine splines with the external quick release.
• LA31 with quick release is always with brake (push).
• The flexible back fixtures (05 or 06) must be standard when the LA31 is equipped with quick release.
• LA31 with brake. An LA31 brake in a push application brakes actively when the actuator moves in an inward direction. The same applies to an
actuator mounted with a brake in a pull direction. It brakes in an outward direction. Under this condition the standard motor uses up to 4 Amp.
and the fast motor uses up to 6 Amp. (Measured after 5 cycles at normal room temperature).
Therefore if the LA31 with brake is used together with a CB7 it is important that the current cut-off limit of the control box is higher than the used
Amp. i.e. not lower than 4 Amp.
LA31 with brake cannot be combined with CB9/CB7 with emergency lowering. For all LA31 actuators with brake self-locking ability up to max.
load it is only possible in one direction: push or pull.
• The LA31 actuator must not be exposed to more than 4000 N in pull. In applications where misalignments may occur the normal back fixture can
take max. 1500 N in pull whereas the flexible back fixture can take up to 4000 N in pull.
The actuator must be mounted at right angles (90
o
C) to it is fixing/load (max.1.5
o
C deviation)
• LA31 actuators with protection class IPX6 must be mounted with the screw holes mounted facing downwards. To ensure that any water remaining
from cleaning / washing is not collected in the screw holes.
Not OK
OK
OK
Correct mounting:
Exchangeable cables:
When using LA31 with reed feedback in combination with the following control boxes: CB8, CB14 and JUMBO control boxes, please use the
cable type 10A31-X5XXXXX-XXXX-X to avoid control box damage.
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