Siemens Synco 200 - Controller (CTLOOP x)

9 Controller (CTLOOP x)
9.1 General
9.1.1 Purpose and use
The CTLOOP x (controller) function block generates a positioning signal based on
a comparison of the controlled variable with the selected reference variable in order
to control the aggregates assigned to the individual sequences.
Purpose of CTLOOP x
Depending on the type of RLU2… universal controller, the following numbers of
controllers (CTLOOP function blocks) are available:
Number of controllers
Controller
type
Number of
controllers
RLU202 Max. 1
RLU202 Max. 1
RLU222 Max. 2
RLU232 Max. 2
RLU236 Max. 2
We distinguish between controller 1 and controller 2.
Use
Controller 1 is used for the following depending on the basic type selected for the
device:
Basic type Use of controller 1:
A Ventilation applications:
– Room-supply air temperature cascade controller
– Supply air temperature controller
– Room or extract air temperature controller
U Universal controller for:
Humidity, dew point, indoor air quality, pressure, volumetric
flow
Controller 2 is used as a universal controller with all basic types.
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Siemens Universal Controllers RLU2… CE1P3101en
Building Technologies Controller (CTLOOP x) 29.08.2008