Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Appendix 03.10.2011
31.2 Configuration diagrams
31.2.1 Explanation of presentation
The controller has a large number of preconfigured function blocks. The available
configuration options are shown in the configuration diagrams; they include:
 Input identifiers (inputs, input functions)
 Aggregates (outputs, output functions)
 Function blocks for open and closed-loop control functions
 In the configuration diagram, planning engineers can enter and draw the
interconnections of individual input and output functions (of their internal signals)
together with the associated connection terminals.
 Devices and extension modules:
N Universal controller RMU7..B
A5 Universal module RMZ785
A7 Universal module RMZ787
A8 Universal module RMZ788
 Physical inputs:
X universal (analog or digital)
 Physical outputs:
Q Relay
Y DC 0...10 V
 The input identifier can be a device or a special sensor (outside temperature,
room temperature, supply air temperature, extract air temperature, frost
protection, setpoint adjuster, pulse)
 Multiple use of inputs is possible, no limitations (e.g. differential pressure sensor
to monitor fan drive belt and release signal for the electric heating coil)
 If an input is wired, the display only shows the units possible (e.g. for an indoor
air quality sensor, only inputs "ppm" are available)
 Alarming for inputs is only active if the input is connected prior to the end of
commissioning
 If an input identifier is changed, all associated settings are changed also (e.g. Xp
was 28 K, now it is 10 Pa)
 Order of configuration:
- First basic configuration, then extra configuration
- First input identifier, then aggregates, then control functions
 Wiring options:
- Always from arrow (
) to line ( )
- From function to input: "x" to "x", "a" to "x", "d" to "x", "i" to "x"
- From output block to output terminal: Analog "Y" to "Y"
- Relay "Q" to "Q"
- From the controller: Load "y" to "y", pumps "p" to "p"
- Grayed surface (e.g. 720) means: Available only for this device type
 Output functions must be connected to the relevant terminals; each output
terminal can only be used once (e.g. N.Q1 for pump 1)
 Each output function has max 3 load signal inputs with max selection (e.g. the
cooling coil valve opens when the room temperature or room humidity is too
high)
Designations used
Rules for the inputs
Procedure for extra
configuration
Rules for the outputs