Minimum Control Value For Basic Load > 0 - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Parameters
7.6.1 Minimum control value for basic load > 0
Options:
This parameter is used to specify whether the basic load for the individual heating and cooling stages is to
be always active or whether it is to be possible to activate or deactivate it via a group object.
•
Activate via object: On the selection of this option, the Min. control value (basic load) function can be
activated (1) or deactivated (0) via the Activate minimum control value (basic load) group object.
If it is activated, then the heating medium is always pumped through the system with at least the
minimum control value. If it is deactivated, the control value can be reduced to zero by the controller.
The dependent Activate minimum control value (basic load) group object is enabled.
•
Always active: On the selection of this option, the basic load is always active
The settings for the basic load can be specified independently for each stage. This setting is specified
in the Temperature controller - Basic-stage heating, Temperature controller - Additional-stage heating,
Temperature controller - Basic-stage cooling, Temperature controller - Additional-stage cooling
parameter window. Here the minimum control value for the basic load that is not allowed to be dropped
below is specified.
This value can only be specified for the PI control types.
The basic load is always activated for all stages, but only applies to the currently active heating or
cooling type of operation.
One sample application for the basic load is floor heating, for which a certain control value must not be
fallen below to protect the installation.
70 2CDC508220D0211 Rev. A | VC/S 4.x.1
Activate via object
Always active
Note