Bosch 8-Dec - Manual (Page 361)

LSN Peripherals | LSN Magnetic Contacts | 353
MSA-LSN B Surface-Mount
Magnetic Contact
Features
▶ LSN surface-mount magnetic contact
▶ VdS class B
▶ Parallel or head-on surface mounting
▶ LSN perimeter protection
Magnetic contacts are used for tear-off surveillance of
doors and windows.
Certifications and Approvals
Region Certification
Europe CE MSE/MSA-LSN B/C
Germany VdS G 104502, B MSE/MSA-LSN B
Installation/Configuration Notes
Installation notes
• Parallel or head-on surface mounting
•
Head-on installation in ferromagnetic materials is
possible with the EG1 installation housing.
1 Contact
2 Magnet
3 Offset in the axial direction
Connecting LSN contacts
•
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.
Testing LSN contacts
•
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 megaohm
Contact closed: approx. 1 megaohm
Note 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).
Parts Included
Type Qty. Component
MSA-LSN B 1 Surface-mount magnetic contact
incl. 4 m cable and 2 x AG4 surface mounting
housing with accessories
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