Belimo UK24BAC Manual de datos técnicos - Página 5

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UK24BAC

Electrical installation

Wiring diagram
AC/DC 24 V supply
Connection via safety isolation
transformer!
Dimensioning of the supply
Also take into account the dimensioning
specifications of the connected
MP/MPL/MFT(2) actuators!
Connection of the MP-Bus
With AC 24 V supply:
Maximum signal conductor length
With AC 24 V supply:
(minimum transformer voltage 21.6V)
Total dimensioning
MP/MPL/MFT(2) actuators [VA]
www.belimo.com
Belimo Gateway MP to BACnet MS/TP
~ 
AC 24 V
+ -
DC 24 V
BACnet MS/TP
The wiring of BACnet MS/TP (RS485) is to be carried out in accordance with applicable
directives. The device possesses resistors which can be switched on for bus connection and
biasing.
The GND of the RS485 line is galvanically isolated from the MP-Bus GND. Additional galvanic
separation shall be provided for segments crossing buildings.
 The network consists of a 3-pin connection
(MP communication and 24 V supply).
 Possibility of connecting a maximum of 8 MP/MPL/MFT(2) actuators per network.
 Neither a special cable nor terminating resistors are required.
 The signal conductor lengths (for calculation, see below) are limited:
– by the sum of the signal conductor data of the connected MP/MPL/MFT(2) actuators,
– by the type of supply (AC 24 V via the bus or DC 24 V via the bus),
– by the signal conductor cross-section.
L = max. cable length [m]
UK24BAC
Power rating [VA]
For the calculation of the maximum cable length, the Belimo MP wiring calculator is available on
the Belimo website for the complete MP-Bus range.
T9-UK24BAC • en • v1.9 • 06.2018 • Subject to changes
MP
24V
GND
1
2
3
5
1
2
3
5
1
2
3
MP
MP
MP
MP
MP
MP
D+
D-
More actuators
and sensors
(total 8)
4
5
1
2
3
1
2
5
MP
MP
MP
MP
MPL
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