15   Project planning examples 
15.1  Layout of a SIGMALOOP at an existing star-configuration line network 
 
Figure 26: SIGMALOOP at an existing star-configuration line network 
If the above limits are observed, multiple incoming and outgoing loop lines can be fed via a 
single cable, e.g. 1 loop for automatic detectors and 1 loop for non automatic detectors. 
 
Figure 27: SIGMALOOP lines 
If functional endurance is required of the cable (applicable building and construction law), this 
can be achived by laying the loop in such a way that forward and reverse lines are fed via dif-
ferent fire sectors (riser ducts). 
 
Multifunctional Danger Control and Indicating Panels SIGMASYS C and M (M-Modules)  111 / 128 
Best.Nr. A24205-A337-B970 – Edition 12 (03/07)