System Controller Power Supply - Bosch PRAESENSA Manual

74 en | Installation wiring
3.7.8

System controller power supply

The multifunction power supply has one 24 VDC output to supply power to a PRAESENSA
system controller or to power an auxiliary device like an Ethernet switch. The output has dual
A/B connectors for connection and cable redundancy. It is recommended to always use both
connections.
Connection procedure:
1.
2.
3.
2021.12.21 | V0.15b | F.01U.402.882
5.5
5.5
D
The power supply interconnection wiring and ferrules are delivered with the system
controller. The power supply terminal plugs (D) are delivered with the multifunction
power supply.
Follow the power supply cable assembly instructions as provided for the system
controller.
– Observe polarity.
Insert the power supply terminal plugs (D) of the interconnection cables into the A/B
sockets of the 24 VDC output.
– It is good practice to connect output A of the power supply to input A of the
amplifier and the same for B. Cross coupling is allowed, but may be confusing in
case of fault finding.
Underwriters Laboratories Listing Document (ULLD)
+ +
(SCx)
PRAESENSA
Bosch Security Systems B.V.