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FP/FR
1100/
1200/2000 V6: Installation and Commissioning Manual
Figure 11: Class "B" Single direction loop (Star configuration)
Figure 12: Class B single direction loop with tee offs
A maximum of 126 detectors (900 Series) or 128 detectors (2000 Series) can be
connected to a loop. For combinations of fire sensing devices, monitoring controllers and
input/output devices, the maximum number of addressable units must be calculated.
Please refer to the Installation Manual of the 900 Series and 2000 Series detectors.
"
EN54 specifies that a short circuit or an interruption in a detection circuit
cannot prevent the indication of a fire alarm from more than 32 fire detectors
and/or manual call points.
Therefore, when more than 32 detectors are connected to one loop, an
isolator should be placed at least at every 32 devices. In that case, a class A
configuration (no Tee Offs) should always be used.
"
EN54 specifies that in case of a system fault, not more than 512 fire
detectors and/or manual call points and their associated mandatory functions
shall be affected. Taking this into consideration, the amount of detectors per
panel should be limited to 512.
Summary of Contents for FP 1200 Series
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