Sequence Controllers, Output Assignments - Siemens Synco 200 Basic Documentation

Assign the main
controlled variable
Conroller 1
RLU222, RLU232,
RLU236
Function diagram
Explanations relating to
the function diagram
RLU202, RLU220
Controller 2
RLU222, RLU232,
RLU236
Function diagram
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Siemens
Building Technologies
9.5

Sequence controllers, output assignments

9.5.1 Activating the function block
To activate the CTLOOPx sequence controller, assign a main controlled variable to
it. The necessary settings are described in chapter 0 "Setting up the control
strategy".
9.5.2 Structure of the sequence controller
Controller 1 (in RLU222, RLU232 and RLU236) can contain a maximum of 4
sequences in the following combinations:
1 sequence: Sequence 1 or sequence 4
•
2 sequences: Sequence 1+2, or sequence 1+4, or sequence 4+5
•
3 sequences: Sequence 1+2+4, or sequence 1+4+5
•
4 sequences: Sequence 1+2+4+5
•
The following diagram shows the sequences and their directions of action:
Seq 3
Seq 2 Seq 1
Heating
The SETHEAT heating setpoint is assigned to successive sequences 1 and 2.
Their output signal acts in the opposite direction to the input variable T.
The SETCOOL cooling setpoint is assigned to successive sequences 4 and 5.
Their output signal acts in the same direction as the input variable T.
Similar to the above statements, the RLU202 and RLU220 controllers contain a
controller 1 with the following sequences:
1 sequence: Sequence 1 or 4
•
2 sequences: Sequence 1+2, or sequence 1+4, or sequence 4+5
•
Controller 2 (in RLU222, RLU232 and RLU236 only) can contain a maximum of 2
sequences in the following combinations:
1 sequence: Sequence 1 or 4
•
2 sequences: Sequence 1+4
•
The following diagram shows the sequences and their directions of action:
Seq 1
Universal Controllers RLU2...
Controller (CTLOOP x)
Seq 4
Cooling
SETHEAT SETCOOL
Seq 4
SET MAX
Seq 5
Load
CE1P3101en
29.08.2008