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LSN Peripherals | LSN Expansion Modules | 379
KD 55/1 LSN 2 Zone
Expander Modules
Features
▶
2 primary lines for connecting contact detectors,
magnetic contacts or bolt contacts
▶
The analysis of a message can be programmed in the
control panel
▶
Existing monitoring function of all LSN elements in the
event of line interruption
▶
The circuit board is equipped with a tamper contact
The KD 55/1 LSN 2 zone expander module integrates
manual conventional sensor technology (e.g. conventional
magnet contacts) into the local security network (LSN).
Functions
The connection is 2-wire. The address assignment may be
freely chosen. Tamper, hold-up, closure or intrusion
messages and alarms are transmitted and analyzed. The
power supply supplies the address unit via the two wires.
A second wire pair can be looped through to provide a
separate power supply for any subsequent address units.
Should wire interruptions or short-circuits occur, all LSN
elements continue to be monitored. In this case, the system
automatically creates two stub lines that continue to
monitor from both sides up to the location of the fault.
The address unit has a tamper contact. If the tamper
contact is triggered, it sends a signal that is transmitted and
evaluated as a unique message.
Certifications and Approvals
Region Certification
Europe CE KD 55/1 LSN
Germany VdS G 101038, C KD 55/1 LSN
Installation/Configuration Notes
Connecting conventional detectors
KD 55/1 LSN 2 zone expander module with 2 DC primary
lines. Up to 20 conventional detectors can be connected per
primary line. In this case, the reports are transmitted from
the conventional detector to the LSN coupler in analog
mode. This means existing equipment can be extended with
ease.
1 Control panel
2 LSN element
3 1-2 DC primary line
4 Stub
Cable lengths
Cable length per primary line (PL)
•
Maximum length unshielded cable - 10 m
•
Maximum length shielded cable - 500 m
The primary lines, control lines, and contact lines for all
expansion modules may not exceed 500 m per network
processing implementer (NVU) in total. The total length of
500 m refers to the sum of shielded and unshielded cable.
The specified length relates to interference-free LSN data
transmission. In practice, interference factors that can lead
to alarm or tampering in the primary line need to be taken
into account. Depending on the environmental influences,
experience values must be applied when determining
length.
Installation
The circuit board can be installed in a 55 flush-mounted
junction box and 55 surface-mounted junction box (flush-
mounted junction box in accordance with DIN 49073).
Parts Included
Type Qty. Component
KD 55/1 LSN sur-
face-mounted
1 KD 55/1 LSN 2 zone expander module, sur-
face-mounted,
Housing for surface mounting incl. mount,
circuit board and cover
KD 55/1 LSN flush-
mounted
1 KD 55/1 LSN 2 zone expander module,
flush-mounted,
incl. mount, circuit board and cover
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