Bosch PRAESENSA Installation Manual page 105

PRAESENSA
Ethernet switch
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General purpose control inputs and outputs
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Fault tolerance and supervision
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Bosch Security Systems B.V.
Six OMNEO network ports, supporting Rapid Spanning Tree Protocol (RSTP), for
loop‑through connections to adjacent devices:
– Five ports are for copper connection on RJ45, two of them provide Power over
Ethernet (PoE) to supply power to connected call stations or other devices.
– One port provides an SFP‑cage for Small Form‑factor Pluggable transceivers for
single or multi‑mode glass fiber connections.
Eight control inputs to receive signals from external systems with configurable
connection supervision.
Eight voltage free single pole, double throw (SPDT) relay contacts to activate external
devices.
Control input and output functions are software configurable.
Supervision of mains, battery and device operation and all connections; faults are
reported to the system controller and logged.
Automatic battery backup takeover from mains in case of mains failures.
Multi‑port network interface with RSTP‑support for recovery from a failing network
connection.
Supervised audio lifeline to connected amplifiers, as backup for a failing amplifier
network interface.
Multifunction power supply, large | PRA-MPS3 | en 105
Installation manual 2019.11 | V1.00 |