e1453b
10
Fire & Security Products
Siemens Building Technologies Group
12.2001
1.3.9
«Interactive» detection lines
«Interactive» detection lines can be installed as stub or loop lines. According to equip-
ment configuration, a maximum of 100 or 128 fire detectors can be connected to a loop
line and a maximum of 32 fire detectors can be connected to a stub line (regulations).
Branch lines can be connected to the detector bus direct.
New systems: Twisted cable, minimum 7 turns per metre.
With powerful EMI: Twisted cable, minimum 10 turns per metre.
With extremely powerful EMI: Shielded and twisted cable
Existing systems: Takeover of existing wiring possible, with certain remaining risk that a
part would have to be replaced.
Line resistances and line capacitances see document e1508, «Connection factors, line
resistances, capacitances».
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
Type of cable
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Application
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
Twisted, min. 7 turns
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Essential in areas where EMI is not critical
e.g. offices, hotels, homes, museums, computer rooms etc.
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
Twisted, min. 10 turns
(generally preferred cable)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Essential in areas where EMI is critical
e.g. X-ray rooms, radar systems, transmitter stations, proximity to
thyristor controls etc.
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
Shielded, twisted
min. 10 turns
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Essential in areas where EMI is extremely critical
e.g. in the vicinity of thyristor controls, high voltage etc.
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
Non-twisted
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Utilization of cable from existing systems with minimum remaining
EMI risk, if necessary with written protection for critical parts
Not recommended for new systems
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
Shielded/non-twisted
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Utilization of cable from existing systems with minimum remaining
EMI risk, if necessary with written protection for critical parts
Not recommended for new systems
Basement level
Ground floor
Upper level
1,5mm
2
CC1140
DC1154
DC1154
DC1154
240V~/10A
CT..
L3
L2
L1
24V
24V
24V
FDC
ÈÈÈÈ
ÈÈÈÈ
24V
DC
Ex
DC1192
SB
Fig. 8
Block diagram «interactive» detection system
