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LINAK
control box
LINAK handset LINAK actuators or lifting columns
Attention should be paid to the following:
• Control boxes must only be connected to the mains voltage specified on the label. All DIN, jack, or minifit plugs from the CB6S/CB12/CB14/CB16/
CB20 IPX6 Washable should be locked by using a LINAK locking mechanism.
• The control box must be connected in such a way that the cables are not trapped, exposed to tension or sharp objects when the application is
moved in different directions.
• All Control boxes with mains supply should be connected to the mains before they are able to work.
Prior to first use of LINAK batteries, please make sure that they are being charged 24 hours in order to reach proper function and prolong the lifetime
of the batteries.
If the customer uses a non-LINAK battery, it is important to check that the current is not reversed (plus and minus swapped over) This applies to both control
boxes, which always run off battery and control boxes with battery backup. Contact your nearest LINAK dealer for specification of type, size etc.
The control current in the handset cable must not exceed 100 mA.
1. System description:
Usage/type of applications:
LINAK actuators, lifting columns and electronics have been developed for use in all places where a linear movement is required.
LINAK’s products can, for example, be used for:
• Adjustment of beds
• Adjustment of furniture
• Adjustment of table heights and angles
• Patient hoists within the care and hospital sector
• Adjustment of industrial processing machines
• Adjustment of agricultural machines
• Adjustment of ventilation systems
• Adjustment of dentist chairs/gynaecological chairs
• Etc.
The principles of a LINAK system are as follows:
The control box is the heart of the system and connects the various outlying units (actuators, lifting columns, handsets and attendent controls). Control
boxes differ widely in complexity. The simplest are only able to convert control signals from the handset into operating voltage for the actuator. The most
advanced are microprocessor controlled and have advanced functions such as, parallel running of several actuators and other complex correlations. Most
LINAK control boxes provide an Electronic Overload Protection (EOP), designed to protect the actuator (excl. LA12, LA29, LA31, LA34), against overload
by disconnecting the current when the actuator is fully extended or retracted. If an LA12, LA29, LA31, LA34 actuator is used, the built-in limit swit ches
stop the actuator when fully extended or retracted, and the control box only disconnects when the maximum current is exceeded. When using a CB6S
control box it is important to note that is does not have electronic overload protection.
The actuator is the unit, which converts the operating voltage from the control box into a linear movement.
The principle of the LINAK actuator’s mode of operation is that a low voltage DC motor (5), via a gear system (12), rotates a threaded spindle, onto
which a nut is fitted. As this nut cannot rotate, since the piston rod (2) is restrained, the piston rod will move forwards or backwards, when the threaded
spindle rotates.
On the basis of motor type, gearing, and the threaded spindle’s pitch, the actuator’s thrust and speed are determined.
The handset is the unit to be used when you want the LINAK
®
system to perform a movement. It determines whether the control box will make the
actuator move in or out. There are many variants of LINAK handsets.
The Attendant Control (ACC, ACK, ACL, ACM, ACP, ACO) is an accessory used when nursing staff want to restrict the patients adjustment options of
a bed. It is often used in conjunction with a handset and disables selected functions on the handset. It can also have control functions with the same
function as those on the handset.
For safety reasons, open function activation of ACP and ACO (ACC, ACK) requires activation of two buttons.
Recommendation:
It is recommended to have options like quick release, manual lowering or similar built into the system, in case of power loss or system
failure, if movement of the system is critical. After service it is recommended to test the system for correct functionality before it is put
back into operation.
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