Bosch 8-Dec - Manual (Page 377)

LSN Peripherals | LSN Expansion Modules | 369
NAK 100 LSN Branch Inter-
face
Features
▶ Additional stubs with other LSN elements can be
switched at the loops.
▶ Up to 32 elements can be connected in one stub
▶ Tamper contact (sabotage alert)
▶ Surface installation
The NAK 100 LSN branch interface connects a branch stub
with bus elements to the LSN.
Functions
The module housing has a tamper contact that, if triggered,
sends a unique message and is evaluated as a sabotage
alert. An integrated buzzer can be used to signal status
changes (e.g. for tests).
In the event of wire interruptions or short-circuits, all LSN
elements in the LSN loop 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.
Certifications and Approvals
Region Certification
Europe CE NAK 100 LSN
Germany VdS G 195059, C NAK 100 LSN
Installation/Configuration Notes
Coupler power supply
The LSN part of all LSN elements (couplers and detectors)
is supplied with power via the control panel's 2-wire LSN
line.
All LSN couplers are designed to loop through the power
supply (+V, -V) of subsequent couplers.
The maximum cable length of the separate power supply
(+V, -V) depends on the power intake of the couplers to be
supplied and their peripherals, if not powered by an
external source.
The applicable voltage range must be taken into account to
ensure the correct operation of the LSN coupler.
Cable lengths
Cable length per primary line (PL) or control lines
• Maximum length unshielded cable - 10 m
•
Maximum length shielded cable - 500 m
Connection
1 Control panel
2 LSN element
3 Loop
4 Stub
Up to 32 LSN elements can be connected in a stub line; VdS
does not permit the combining of manual and automatic
detectors.
According to VdS, a maximum of 10 manual detectors are
permitted in a stub line.
A second wire pair can be looped through to provide a
separate power supply to subsequent LSN couplers.
Parts Included
Type Qty. Component
NAK 100 LSN 1 Branch interface
Technical Specifications
Operating voltage +10 VDC to +33 VDC
Current consumption 2.5 mA
Connection Branch for loop or stub lines
Line voltage +20 mV
Protection category as per EN 60529 IP 30
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