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Belt Conveyor Pull Rope Switch LRS

APPLICATION

Kiepe pull-rope emergency stop switches type LRS are used in accordance with the requirements of EN 620 as well as BGI 710 and in conformity with DIN EN ISO 13850 as emergency stop devices as supplementary safety measures on conveyor belt systems. The pull rope is tensioned on one side of the actuating shaft.

The devices are suitable for indoor use and applications where the ambient temperature varies only in small range.

With the pull-rope system functionally aligned, the emergency stop signal can be triggered over a distance of 20 m.

Kiepe pull-rope emergency stop switch types LRS comply with Machinery Directive 2006/42/EC. The device must only be used in electrical control circuits.

The LRS aluminum housing offers space for one (1) switching element with different contact confi gurations for each variant of LRS. Taking into consideration the safety data and maintenance recommendations, the pull-rope emergency stop switch type LRS can be used in safety circuits in accordance with DIN EN ISO 13849 up to Performance Level e (PLe).

FUNCTION

The emergency stop signal can be activated by pulling or breaking of the pull wire or by pushing the red emergency stop button when the switch is correctly adjusted. An indicator helps to fi nd the correct operating position for a proper work. The contacts are actuated by a spring supported cam disc (snap action function) at the same time.

The emergency stop signal is performed with positive-making normally closed (NC) contacts in accordance with the closed circuit principle.

After the emergency stop function is triggered, the switching mechanism is locked in the shut-off position “0”. The blue reset knob can only be moved to switching position “1”, when the actuating shaft is back in operating position.

In position “1”, the switching contacts are recativated and the conveyor belt is prepared for start up the belt conveyor.

Note: Resetting the pull-rope emergency stop switch must not cause the conveyor system to start up.

TECHNICAL DATA

Designation:Pull-rope emergency stop switch type LRS – emergency stop device with latching function.

Type of actuation: Bidirectional; spring-loaded (“snap action”)

Complies with:EN ISO 13850; EN/IEC 60947-5-5; EN/IEC 60947-5-1; UL 508

Suited for:Control units and systems in accordance with EN/IEC 60204

Mechanics

Enclosure:Aluminum yellow (RAL 1004)

Mounting: 4 holes for M5 screws.

Installation position:ANY

Pull-rope length: up to 20m

Actuation force: <125 N

Weight: 0.7 kg.

Electrical System

Switching system:Up to 4 contacts; cam operated positive-opening switches.

Cable entry: Threaded holes 3x M20 x 1.5 mm with 2x dummy screws, 1x dummy plug.

Utilization category: 

AC-15: 240V / 3A

DC-13: 24V; 2A

Connection cross section: 1 mm2 to 2.5 mm2.

Protective conductor connection: In the casing; M4

Rated insulation voltage Ui: AC 500V

Rated impulse withstand voltage Uimp: 2.5 kV, degree of pollution III

Conventional thermal current Ith: 10A

Contact reliability: 1 million switching operations.

Ambient conditions in accordance with DIN EN 60947-5-5

Ambient temperature Protection: -25°C.. + 70°C

Protection Rating: IP 66 in accordance with EN 60529

Safety data in accordance with DIN EN ISO 13849 and EN 61062

Safety functions: Emergency stop incl. latching. Manual reset.

Usable in accordance with DIN EN ISO 13849 (depending on customer application)

B10d-value: 10.000 actuation’s

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