Bosch 8-Dec User Manual

LSN Peripherals | LSN Magnetic Contacts | 361

▶ Shutter door contact in LSN technology
▶ For connecting to the LSN intrusion control panel
▶ VdS class C
▶ Tamper switch
▶ High level of mechanical strength
▶ Large switch distance
▶ LSN perimeter protection

LSN shutter door contacts are used to monitor rolling,
sliding and garage doors.

Europe

CE

AMK 4 S LSN

Germany

VdS

G 101006, C   AMK 4 S LSN

•

For doors < 1.5 m, one shutter door contact is required.

For doors > 1.5 m, use two shutter door contacts. Take

note of the permissible installation tolerances.

•

The shutter door contact consists of a sealed magnetic

switch and a magnet in a plastic casing.

•

The connection cable is protected over 1 m by a metal

tube.

•

The magnetic switch is installed at ground level

(requires a flat surface). Vehicles with rubber tires can

drive over the switch without causing problems.

•

The magnetic switch must not be used as a door-

stopper.

1

Extraction

2

Proximity switch part

3

Standby zone

4

Tamper zone

•

Each LSN contact is a physical LSN element (1 out of

127 possible per loop).

•

The length of LSN contact connection cables must be

included when planning the total line length of the LSN

loop, as LSN technology is incorporated in these

detectors.

•

Passive coupling elements for joining the connection

cables to the installation cable must be placed as close

as possible to the LSN contacts. The 1 m connection

cable with 2 m LSN cable length is included in the

calculation of the LSN cable length (LSN is carried into

the contacts and back out again).

•

Connector boxes (optional) are classified as installation

material.

•

Reed switch and microswitch functions can be checked

before installation by a high-Ohm multimeter or

continuity checker (for diode paths).

•

The resistance values are approximate values; a large

change in resistance is significant here.

1

Detector

2

High-Ohm multimeter

Contact open: approx. 3 MOhm

Contact closed: approx. 1 megaohm

Only the intrusion contact can be checked in
this way. The tamper switch of the Class C
magnetic contact can be checked by the LSN
control panel or with the LSN testing device
(software version 3.x onward).