Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Aggregates 03.10.2011
If plant start is triggered by "Smoke extraction" or "Night cooling", there is no
startup circuit.
On plant startup, the outside air damper operates according to the following
diagram:
Yx
[%]
10 min
t
100
Yx
Controller signal...
Starting time
(fixed)
Plant
startup
Normal operation
3150D18en
Opening of air damper
by controller signal
min
10.5.11 Function check / wiring test
The current state of the mixed air damper is displayed on the operator unit.
Main menu > Aggregates > Mixed air damper >
Operating line Comments
Mixed air temperature
Mixed air temperature setpoint
Output modulating 0...100%
During the wiring test, the modulating output can be directly controlled via the
control switch.
Main menu > Commissioning > Wiring test > Outputs >
Operating line Comments
Mixed air damper output ----, 0...100%
Limits have no effect during wiring tests. They cannot be used to set minimum air
volume during commissioning.
10.5.12 Troubleshooting
Errors in operation
When exiting the "Commissioning" menu, a check is made to see which sensors
are connected. If one of the sensors connected now is missing, fault message
"[...X...] sensor error" appears.
No. Text Effect
101… [N.X1] sensor error Non-urgent message; must not be acknowledged
If the MECH sensors are missing, there is no MECH. If the outside temperature is
missing, the value used for the upper limit is the set value "[Max. limitation] end
position".
Function diagram
Display values
Wiring test
Note
Fault status messages