30 en | Planning Modular Fire Panel
F.01U.028.089 | 8.0 | 2011.07 System Description Bosch Sicherheitssysteme GmbH
– Up to three remote keypads to a specific panel can be directly assigned to the network
using the FSP-5000-RPS Programming Software.
The cabling between nodes and the maximum permissible cable length is also determined by
the choice of topology.
Further information on the limits in the network can be found in Section 7.1 System Limits,
page 152.
Cable Type for Networking
The CAN connection is a two-wire connection (CAN-H and CAN-L). Three-wire connection
(CAN-H, CAN-L and CAN-GND) may be necessary in exceptional cases, e.g. with a high EMC
load or a significant difference in grounding potential. The shield wire of the CAN cable is only
connected to the metal housing of the FPA on one side.
The maximum permitted cable length depends on the loop resistance of the cable used and
on the number of communicating nodes (see Figure 3.2).
Example: The J-Y(St)Y2x2x0.8mm red fire detector cable enables two nodes with a
maximum distance of around 800 m to be connected.
Figure 3.2 Achievable cable length, depending on the number of nodes and the cable resistance
NOTICE!
The distance between two nodes in loop topology can be determined by reading off the value
at two nodes in the diagram (see Figure 3.2).
L = cable length in meters
N = number of nodes
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