Siemens Synco 200 Basic Documentation page 63

Output inversion
Settings
Note
Output signal behavior
Diagram
Application example
Note
Siemens
Building Technologies
8.3.3 Heat recovery changeover (TYPE)
To produce the changeover between HR equipment (wheel, glycol) and mixing
dampers, you can invert the output signal using TYPE.
You have to make the following settings in normal operation to achieve the
customary control response:
HR equipment:
•
\_ TYPE = ERC
Mixing damper:
•
/_ TYPE = DMP
This response applies if the HR equipment (HREC) is connected to the SEQ1 Y
heating sequence of the CTLOOP controller.
If the controller with a HR equipment / mixing damper output is switched off during
operation (input D1 = Protection
TYPE = ERC: 0% (i.e. DC 0 V)
•
TYPE = DMP: 0% (i.e. DC 0 V)
•
8.3.4 Limitations (MIN POS, MAX POS)
You can impose upper and lower limits on the modulating output.
In that case, the 0...100% output signal corresponds to:
Minimum positioning signal (MIN POS)...maximum positioning signal (MAX POS).
Y
100 % 10 V
MAX POS
MIN POS
0 %
0 V
0 %
Qs = load demand from the sequence controller
You can implement a minimum air damper position using the minimum positioning
signal (MIN POS).
The controller does not give consideration to MIN POS and MAX POS in Protection
mode.
Universal Controllers RLU2...
Aggregates
0...100% load = 0...100% output
0...100% load = 100...0% output
), the output signal behaves as follows:
100 %
Qs
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CE1P3101en
29.08.2008