GB
MLS Digital Bus Power Supply D RB2000
Important installation information!
Installation and commissioning may only be done by an authorised
electrician. Mains power (230V~/50 Hz) to electrical equipment must
be switched off during installation. Applicable laws and standards of
the country in which the device is operated must be observed!
This latest generation MLS Bus Power Supply is for use only with
PEHA' s MLS Digital range of presence detectors and accessories.
Up to 99 D RB2000s can be connected together (per installation)
increasing capacity to almost 20,000 devices on a single MLS
Digital system.
Installation & Connection
The D RB2000 Bus Power Supply should be positioned in a readily
accessible location, usually adjacent to the mains distribution
board for the area being controlled. A fused 3A, 230 volt mains
supply is required which should be dedicated to the D RB2000 for
maximum reliability. This device MUST be earthed. It is recom-
mended that Doublepole Isolation is provided.
The MLS Digital bus network should be wired using 1.5mm mains-
rated, unscreened twisted pair, which starts from the bus power
supply and connects into every MLS Digital device. Up to 200
devices can be connected to one D RB2000.
DO NOT CONNECT MAINS TO THE MLS BUS.
Y
Z
A
B
INPUT
INPUT
INPUT
4
3
2
2 PAIR BACKBONE
GLOBAL OVERRIDE INPUTS
ADDRESS
SWITCHES
PEHA Lichtsteuerung – PEHA Elektro GmbH & Co. KG a Honeywell Company · Gartenstraße 49 · 58511 Lüdenscheid · Deutschland · www.peha.de · peha@peha.de
-
+ -
+
L
N
INPUT
ALL ON
RETURN
OUT
230V 50Hz
1
FULL
TEST
BUS CONNECTIONS
POWER SUPPLY
Wiring Topology
The MLS Digital Bus may be wired in a 'free topology' - i.e. any
combination of spurs and rings. It is recommended however, that
a ring topology is used so that the integrity can be checked. It
should be wired from the 'OUT' terminals to every device on the
system, coming back to the 'RETURN' terminals. The polarity of
the MLS Digital Bus must always be maintained. The switch to the
left of the bus terminal blocks, when pressed, performs an integrity
check on the bus. A correctly installed ring system will cause
the green LED below the switch to flicker. See Application Note
AN4001 - MLS Bus Wiring for further details.
Example Wiring of System
MLS Bus
MLS Bus Power Supply
RB2000
D RB2000
MLS Bus
Spine
Spine
MLS Bus
MLS Bus Power Supply
RB2000
D RB2000
MLS Bus
Spine
Spine
MLS Bus
MLS Bus Power Supply
RB2000
D RB2000
MLS Bus
To further
To further
D RB2000 units
RB2000 units
Connecting Multiple D RB2000s
On larger installations where multiple D RB2000 units are
required, they may be connected together via a 'spine' or
'backbone'. The spine should be wired using 24AWG twin
twisted pair, screened communications cable, e.g. Belden
9502. When D RB2000s are linked in this way Common
Zone 1 becomes a 'Building Zone', providing building-wide
Common Zone 1 linking. The maximum length of the spine
should not exceed 1200m with all D RB2000s being linked
in a single spur.
The spine should be linked to AB and YZ as shown (i).
The spine should be linked to AB and YZ as shown (i).
Note that the screen is not shown, however, it must be
Note that the screen is not shown, however, it must be connected at each D RB2000.
connected at each RB2000.
Y
Z
A
B
LOAD
INPUT
INPUT
RESET
SW 'S
SHED 1
2
1
2 PAIR BACKBONE
GLOBAL OVERRIDE INPUTS
(i)
The RB2000 at each end of the line should have its
The D RB2000 at each end of the line should have its Terminate switch set to ON as shown in
Terminate switch set to ON as shown in figure (ii). All
figure (ii). All others should be set to OFF.
others should be set to OFF.
To further MLS
To further MLS
Digital devices
Digital devices
To further MLS
To further MLS
Digital devices
Digital devices
To further MLS
To further MLS
Digital devices
Digital devices
ON
Y
Z
A
B
INPUT
INPUT
INPUT
INPUT
(ii
4
3
2
1
2 PAIR BACKBONE
GLOBAL OVERRIDE INPUTS
W4133I_DE_1204
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