VRP-M VAV
Adaptive VAV controller
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Product information S4-VRP-M VAV • en • v2.0 • 11.2006 • Subject to changes
www.belimo.eu
MP-Bus
Topology
The cables of up to eight actuators can be laid in a freely definable topology. The following topol-
ogies are permitted: Star-shaped, ring-shaped, tree-shaped or mixed forms.
Connection
The network consists of a 3-pin connection (MP communication and 24 V supply). Neither
special cables nor terminating resistors are required. Power can be supplied either over the bus
cable or from a local power supply.
MP
4
3
2
1
VRP-M
MP
w
~
T
+
_
5 6 7
U5 z1 z2
4
3
2
1
VRP-M
MP
w
~
T
+
_
5 6 7
U5 z1 z2
~
T
+
_
AC 24 V
DC 24 V
Network
Up to eight MP actuators can be connected in a network (VAV-Compact, VRP-M etc.).
Supply with AC or DC voltage
Nominal voltage
AC 24 V, 50/60 Hz DC 24 V
Power supply range AC 19.2...28.8 V DC 21.6...26.4 V
Wire sizing
See «Technical data», page 7
Length of MP-Bus cable
The cable lengths are limited:
– By the sum of the performance data of the connected devices, VAV controllers and actuators
– By the type of supply (AC 24 V or DC 24 V)
– By the cable cross-section
For more information about planning and installation, see www.belimo.com
– VAV-Compact NMV-D2-MP Product Information
– Bus and communication systems section
Addressing
If the VRP-M system solution is integrated in a bus system, each connected VRP-M must be
assigned an MP address in the range 1 ... 8.
Procedure
– Start the addressing procedure on the MP-Bus master with the VRP-M-Tool, UK24LON, etc.
– Refer to the bus master documentation for further details
– Procedure with VRP-M-Tool:
a) Select the address by means of the serial number
Enter the serial number of the VRP-M (sticker on VRP-M, displayed in VRP-M-Tool)
b) Select addressing with acknowledgement on the VRP-M
Acknowledge the selected address by pressing the Set pushbutton on the required VRP-M
The power LED (green) blinks when the Set pushbutton is pressed
Up to 8 MP-Bus users
More MP-Bus users
