e1453b
8
Fire & Security Products
Siemens Building Technologies Group
12.2001
1.3.8 AnalogPLUS
detection lines
AnalogPLUS
detection lines can be installed as stub or loop lines. A maximum of 128
fire detectors may be connected to a loop line and a maximum of 32 fire detectors may be
connected to a stub line. A DC1135 T-branch module is required for branch lines from the
loop. Up to 20 fire detectors can be connected to the DC1135 per stub line.
New systems: Twisted cable. With very powerful EMI shielded and twisted.
Existing systems: Single and parallel conductors are permissible.
For line resistances and line capacitances see document e1508, «Connection factors,
line resistances, capacitances».
Type of cable
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Application
Twisted, min. 7 turns
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generally recommended
ÁÁÁÁÁÁ
Shielded, twisted
min. 7 turns
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Essential in areas where EMI is critical
e.g. X-ray rooms, radar systems, transmitter stations, proximity to
thyristor controls etc.
ÁÁÁÁÁÁ
Non-twisted
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Utilization of cable from existing systems with minimum remaining
EMI risk from adjacent areas
Not recommended for new systems
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
Shielded/non-twisted
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Utilization of cable from existing systems existing systems with
minimum remaining risk in areas where EMI is critical
Not recommended for new systems
Basement level
Ground floor
Upper level
1,5mm
2
CC/CI..
DC1134
DC1135
DC1134
DC1135
DC1134
DC1135
CT..
240V~/10A
L3
L2
L1
24V
24V
24V
FDC
Ex
24VDC
DC1192
SB
Fig. 6 Block diagram detection system AnalogPLUS
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