Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Aggregates 03.10.2011
10.1.11 Start and stop conditions
Two inputs can be configured as stop condition for each fan. In addition, two inputs
at which the relevant speed can be selected can be configured as start condition.
Main menu > Commissioning > Extra configuration > Aggregates > Supply air fan >
Main menu > Commissioning > Extra configuration > Aggregates > Extract air fan >
Operating line Adjustable values / remarks
Start condition 1 ---, N.X1, N.X2, ... (digital and analog inputs)
Start condition 2 ---, N.X1, N.X2, ... (digital and analog inputs)
Stop condition 1 ---, N.X1, N.X2, ... (digital and analog inputs)
Stop condition 2 ---, N.X1, N.X2, ... (digital and analog inputs)
Main menu > Commissioning > Settings > .... or
Main menu > Settings > Aggregates > Supply air fan >
Main menu > Settings > Aggregates > Extract air fan >
Operating line Range Factory setting
Speed start condition 1 Stage 1, Stage 2 Stage 1
Speed start condition 2 Stage 1 Stage 2 Stage 2
An analog signal can be used as start or stop signal.
The limit values for when the corresponding fan is to be switched on or off can be
set via setting values "[Start value x] ON" and "[Start value x] OFF".
Main menu > Commissioning > Settings > … or
Main menu > Settings > Aggregates > Supply air fan >
Main menu > Settings > Aggregates > Extract air fan >
Operating line Range Factory setting
[Start value 1] on Depending on selected type Depending on type
[Start value 1] off Depending on selected type Depending on type
[Start value 2] on Depending on selected type Depending on type
[Start value 2] off Depending on selected type Depending on type
[Stop value 1] on Depending on selected type Depending on type
[Stop value 1] off Depending on selected type Depending on type
[Stop value 2] on Depending on selected type Depending on type
[Stop value 2] off Depending on selected type Depending on type
For example, the following function can be implemented: Control switch on the
panel acting directly on the fans. With the start and stop conditions, a separate
control switch for the supply and the extract air fan can be implemented.
If switching off takes place via the stop condition of the supply air fan, the entire
ventilation plant (sequence controller, communication, etc.) is switched off.
Start conditions of the supply air fan and start and stop conditions of the extract air
fan do not influence any other plant components.
Stop conditions take priority over start conditions (see section 10.1.20).
Config
uration
Setting values
Setting values