Bosch DCNM-APS2, Руководство по установке оборудования

Страница: 30 / 80

30 en | System installation design and planning DICENTIS
2021.01 | V2.2 |
Hardware Installation Manual
Bosch Security Systems B.V.
Cabling possibilities (DCNM-APS2/DCNM-
PS2) Limitations/requirements
The redundant loop between two DCNM-PS2
units is for power and signal. If one of the
DCNM-PS2 units fails, the other DCNM-PS2
unit will supply power and signal to the
DICENTIS devices in the daisy chain. – a network switch with redundant power
supply, should be connected to the
DCNM-PS2 / DCNM-APS2 units, as
shown in the previous figure.
You can use any of the high power sockets (3,
4, or 5) on either of the DCNM-PS2 units to
create the daisy chain/redundant loop.
For example, high power socket 3 on one unit
can be connected to high power socket 4 on
another unit. Note : The redundant loop must be connected
to another DCNM-PS2 type unit. You cannot
use DCNM-PS / DCNM-APS type units to
create redundant loops for power.
You can create a redundant loop for signal
only, by connecting the DICENTIS devices in a
daisy chain configuration to the same DCNM-
PS2 or DCNM-APS2, although this is not
recommended.
The DCNM-PS2 unit is designed to reduce
cost of ownership, for example, by allowing a
maximum of three redundant loops to be
connected between two DCNM-PS2 units. The redundant loop will protect against cable
outages, but not against failure of a DCNM-
PS2.
i
Notice!
Rapid Spanning Tree Protocol (RSTP) must be enabled in the DICENTIS Conference System
for these redundancy options to work correctly.
Refer to
– Power supply capacity calculation plan, page 22