9.5.8 Control timeout
In order, for example, to prevent the cooling valve from opening immediately the
moment the heating valve has closed, you can enter a control timeout period
(TIMEOUT). The controller does not add the integral action component during that
period of time.
Delays the integral
action component
9.5.9 Troubleshooting
If the main controlled variable is not available to the controller (e.g. in case of cable
rupture), the plant will be shut down and a sensor error message "Xx --- " or
"Xx ooo" delivered.
Errors in operation
The major configuration errors and their consequences are the following:
Configuration errors
• The sequence controller only operates if a terminal with an analog value is
assigned to its main controlled variable
• If individual sequences do not have outputs assigned to them, they and all
subsequent sequences are inactive The possible combinations are described in
subsection 9.5.2 “Structure of the sequence controller”
118 / 174
Siemens Universal Controllers RLU2… CE1P3101en
Building Technologies Controller (CTLOOP x) 29.08.2008
To Next Page
Loading...
