Lifeline - Bosch PRAESENSA Installation Manual

PRAESENSA
Follow the connection procedure below:
1.
2.
3.
4.
5.
Notice!
The power supply connections may not be longer than 3 m
9.5.4

Lifeline

The lifeline is an optional cable connection between a PRAESENSA amplifier and a
PRAESENSA multifunction power supply. This interconnection serves multiple functions:
Bosch Security Systems B.V.
Crimp ferrules H onto the ends of the electrical wires of cable F to provide a solid and
reliable electrical connection.
– Use a dedicated crimping tool.
Insert each wire into the appropriate slot of the connector B, observing polarity. Wiring
color convention: red for + and black for -.
– Use a flat blade screwdriver to tighten each connection.
Insert the cable into the 48 V input A, cut the cable to length and mount the connector of
the powering device to the other end of the cable, again observing polarity. Insert this
connector into output A of the powering device.
For redundancy, repeat these steps for a second cable between output B of the powering
device to input B of the amplifier.
Alternatives:
– Instead of using the A/B outputs of a PRAESENSA powering device, also two
separate power supplies can be used. The maximum current rating of the supply
connectors is 15 A; only use a 48 V power supply that is current limited to < 15 A,
also in overload condition.
– When no power supply redundancy is required, a single power supply can be used; in
that case connect the 48 V inputs A and B in parallel to make use of the amplifier's
internal dual power converters for fail safe redundancy and to avoid a supply
supervision fault event.
Amplifier, 600W 8-channel | PRA-AD608 | en
Installation manual
87
2019.11 | V1.00 |