LEGRAND EMS CX3, Техническое руководство, Страница: 57 / 98

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TECHNICAL GUIDE
CX³ EMS E
nErgy
M
anagEMEnt
S
yStEM
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The number of power supplies Cat.No 4 149 45 in an CX³ EMS system depends on how much power is needed for the modules to work
correctly.
One power supply module can provide up to 500 mA. If the installation needs a higher power rating, an additional power supply
module must be installed. A single EMS CX³ bus must not exceed 1.5 A: i.e. 3 power supply modules maximum.
The total number of modules permitted with one power supply depends on their total consumption.
1 CX³ EMS system
1 power supply module
max . 500 mA
A
L
I
M
max . 500 mA
max . 500 mA
max . 500 mA
max . 500 mA
max . 500 mA
A
L
I
M
A
L
I
M
A
L
I
M
A
L
I
M
A
L
I
M
If there are 1 or 2 power supplies,
they should be installed at each
end of the CX³ EMS system.
If there are 3 power supplies, 2 should
be installed at each end of the CX³ EMS
system, and the 3rd in the middle. Caution,
each set must be connected with a white
cable.
2 power supplies cannot
be installed on the same
communication rail.
1 CX³ EMS system
2 power supply modules
max . 500 mA
A
L
I
M
max . 500 mA
max . 500 mA
max . 500 mA
max . 500 mA
max . 500 mA
A
L
I
M
A
L
I
M
A
L
I
M
A
L
I
M
A
L
I
M
Each set consisting of “one power
supply module and its CX³ EMS
modules” should be separated
with a special link which must include a
white cable (supplied with every power
supply module).
If there are a more than one of
power supply modules in the same
system, only one module should
be earthed.
1 CX³ EMS system
3 power supply modules
max . 500 mA
A
L
I
M
max . 500 mA
max . 500 mA
max . 500 mA
max . 500 mA
max . 500 mA
A
L
I
M
A
L
I
M
A
L
I
M
A
L
I
M
A
L
I
M