DK Digital CDB-700 Instrukcja Użytkownika Pobierz pdf (Strona 36)

Page 36 of 108

8. LA30 (MEDLINE

CARELINE

TECHLINE

)

The LA30 is a powerful actuator yet small enough to ﬁt most applications.

The actuator can be supplied with options such as built-in potentiometer for servo

operation or an extra powerful motor for increased speed and strength (S-motor).

In addition to industrial and agricultural applications, the actuator is also ideal for

positioning satellite dishes.

Reed-switch:

The Reed-switch gives a number of pulses for each rotation of the motor. These pulses

are used to calculate the piston rod’s 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.

Mechanical spline:

The splines function so that the actuator can only push, not pull.

During pull in the actuator, the inner tube is lifted off the thread bush, and the actuator can therefore never pull a load, only push. See Figure 8.

Functional test of mechanical splines:

When the piston rod is at the innermost position, it must be possible to pull it out manually to its full travel length and to press it in again without

much resistance and without using the motor. If this is not possible, contact your nearest LINAK dealer.

Usage:

• Duty cycle: 10%, 2 minutes continuous use followed by 18 minutes not in use

• Ambient temperature: + 5° to + 40°C

• Storage temperature: - 40° to + 70°C

• Compatibility: CB8, CB12,

• Should the LA30 be used with a non LINAK control unit, please ask the nearest LINAK representative for further details

Warning!

Do only use the actuator within specified working limits.

Recommendations

LINAK control boxes are designed so that they will short-circuit the motor terminals (poles) 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 achieve the self-locking ability of the actuator.

Improved self-locking ability

When using the LA30 with stereo jack plug be aware of the reversed direction of travel as standard.

The current supply to LINAK actuators must be cut off in case of overload when the actuators reach end position.

Various other information:

Noise levels:

LA30: dB(A) 50; LA30S: dB (A) 55; LA30L: dB(A) 48.

Measuring method DS/EN ISO 3743-1, actuator not loaded.

The H-bridge ensures that the motor is shorted when the relays are incactive.

This is necessary to improve the self-locking of the actuator.

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