2
Bosch Security Systems | 04-2003 | 3922 988 43318 en
Digital Congress Network | Installation and Operating Manual | Chapter 4 - Central Control Equipment
en | 4-14
LBB 4106/00, LBB 4106/00D Extension power supply unit
4.10 LBB 4106/00, LBB 4106/00D
Extension power supply unit
The Extension power supply unit is remotely controlled by the CCU and enables systems to be
extended. Used in combination with a central control unit, the unit is used to supply power for up to
an additional 180* PCF points.
*The figure stated represents the number of units rated with a Power Consumption Factor (PCF) of
1. For further information regarding the Power Consumption Factor refer to Chapter 10.1.1: “System
design fundamentals”.
The unit connects to the main trunk-line cabling using the loop-through cabling method and is
switched on automatically when the CCU is switched on. A built-in trunk-line splitter enables the unit
to be installed anywhere within the system cabling. All its outputs are protected against short circuit
of the power supply lines.
Mounting
The unit can only be rack-mounted when two Extension power supply units LBB 4106/00 are used.
The units are attached to each other using a supplied metal plate used to join the units together at
the front and rear. Once joined the unit can be mounted using the mounting brackets supplied with
each unit. Mounting the unit is similar to CCU mounting (see Chapter 4.12 ).
Controls and Indicators (see FIG 4-10):
1. Power On indicator (green LED).
2. 1 x Trunk-line outlet connector for loop-through connection** (without regeneration) of the
trunk-line plus indicator (red LED) to indicate trunk-line overload. The outlet is protected against
short circuit of the d.c. supply lines.
3. 2 x Tap-off outlet trunk-line cable connectors** (with regeneration)***. Each outlet includes an
indicator (red LED) to indicate trunk-line overload. Each outlet is protected against short-circuit
of the d.c. supply lines.
4. Euro-mains socket with in-built fuse (a.c. mains voltage selectable inside unit). Matching mains
cable (1.7 m (5.5 ft.) (D-version 2.5 m (8.2 ft.) included.
5. 2 m (6.5 ft.) long cable terminated with a moulded 6-pole circular connector for connection to
the DCN network cabling.
6. 3 indicators to indicate trunk-line overload (red LEDs).
Mains connection
• For mains voltage selection, fuse rating and mains cable and plug and socket connections
refer to the Central Control Unit LBB 3500/xx. (Chapter 4.4.1). A mains tally, showing
the connection details is visible on one side of the unit once the top cover is removed.
The fuse ratings are the same as used for CCUs LBB 3500/15 and LBB 3500/35
• The unit must be powered via an earthed mains outlet.
** For connection of contribution, distribution, and interpretation units, incl. ext. power supplies.
*** For more information on regeneration see Chapter 10.3.
FIG 4-10 LBB 4106/00 Front and rear view Extension Power Supply unit
1
Front view
2 43
6
5
Rear view
