Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Temperature controller (basic type A) 03.10.2011
11.1.3 Priority of functions
When simultaneously activating different functions acting on the same controller,
the following priority applies:
1. Frost protection
2. Locking of sequences after heating/cooling changeover
3. Preheating function
4. Sequence locking acc to OT
5. Sequence limiter
6. Supply air limiter
7. Sequence controller, assignment of aggregates
11.2 Overview of control modes
S3 S2 S1 S4 S5
yp yp yp yp yp
a
d
Controller 1
(Ventilation)
With supply air limitation
Cascade
Constant (supply air)
Cascade/const (alternating)
Seq. limit. Casc/Const
11.2.1 Activate control modes
The following control modes are available: To activate the various control modes,
the following settings must be entered via the operating lines Input identifier,
Control strategy, and Casc/const changeover input:
Constant temperature control
Control mode Operating line Setting
Supply air temperature control
(section 11.3)
Input identifie
r N.Xn
Control strategy
Casc/const changeover input
SAT
Constant (supply air)
---
Room temperature control
(section 11.4)
Input identifie
r N.Xn
Control strategy
Casc/const changeover input
RT (or from bus)
Default value (cascade)*
---
Extract air temperature control
(section 11.4)
Input identifie
r N.Xn
Control strategy
Casc/const changeover input
EAT
Default value (cascade)*
---
* For simple constant temperature control of room or extract air temperature, the control strategy is not
required; the default value can be retained.
Room temperature control with supply air limitation
Control mode Operating line Setting
Room temperature control with
supply air limitation
(section 11.5).
Input identifie
r N.Xn
Input identifier N.Xn
Control strategy
Casc/const changeover input
RT (or from bus)
SAT
With supply air limitation
---
Extract air temperature control
with supply air limitation
(section 11.5).
Input identifie
r N.Xn
Input identifier N.Xn
Control strategy
Casc/const changeover input
EAT
SAT
With supply air limitation
---