72
en | Installation wiring
PRAESENSA
2021.12.21 | V0.15b | F.01U.402.882
Underwriters Laboratories Listing Document (ULLD)
Bosch Security Systems B.V.
3.7.6
Amplifier power supply
The multifunction power supply has three independent 48 VDC outputs to supply power to
three PRAESENSA power amplifiers. Each output has dual A/B connectors for connection and
cable redundancy. It is recommended to always use both connections.
B
+
+
(AD60x)
1
2
3
5.5
5.5
5.5
Connection procedure
1.
The power supply interconnection wiring and ferrules are delivered with the amplifier.
–
The power supply terminal plugs (B) are delivered with the multifunction power
supply.
2.
Follow the power supply cable assembly instructions as provided for the amplifiers.
–
Observe polarity.
3.
Insert the power supply terminal plugs of the interconnection cables into the A/B sockets
of one of the three 48 VDC outputs.
–
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.