ABB i-bus KNX Product Manual page 149

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ABB i-bus KNX
Parameters
7.8.2.1.1 —
Dependent parameter
Control value after exceeding monitoring time / Control value on input fault
This parameter is only visible if the Temperature input monitoring parameter has not been deactivated.
The name of the parameter is dependent on whether the group objects or a physical input is monitored as
the temperature input.
Options:
The control value specified here becomes active if the monitoring time is exceeded or if there is an error
on the device input monitored. The control value applies to heating or cooling, depending on which was
active at the time of the alarm. In addition, the device changes to the Building Protection operating mode.
The monitoring of the temperature value is important because the controller cannot calculate any control
values for the outputs without a valid room temperature value. To protect the system, using this parameter
it is possible to specify a certain control value to prevent, e.g., cooling of the room.
The control value set here remains active until the error on the input has been rectified or a new
temperature value has been received via the bus.
If a physical device input is monitored, the device automatically checks every minute whether the input is
signaling an error. If this is the case, the device changes to the control value set. For this reason it is not
necessary to specify a time for monitoring an input.
7.8.2.1.2 —
Dependent parameter
Monitor receipt of group object "Operating mode"
This parameter is only visible if the Channel function parameter has been parameterized with the
Controller channel option.
Options:
The monitoring of the Operating mode group object is activated using this parameter. The regular
changeover of the operating mode can be monitored using this parameter. Because this changeover is
generally triggered by a higher-level device, such as a visualization or building control system,
it is therefore also monitored whether the higher-level device is active.
•
Deactivated: The monitoring of the Operating mode group object is deactivated.
•
Activated: The monitoring of the group object is active. The dependent parameters Time interval for
cyclical monitoring and Operating mode after exceeding monitoring time as well as the Error:
operating mode receipt group object are enabled.
0...25...100 %
Note
Deactivated
Activated
VC/S 4.x.1 | 2CDC508220D0211 Rev. A 147