Instruments And Power Values - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Planning and application
4.1.3

Instruments and power values

The following values can be monitored by threshold values with the Energy Actuator:
Instrument values
•
Current value (per output)
•
Voltage (per output)
•
Frequency
Power values
•
Active power (per output)
•
Active power total (sum of outputs A...C)
Two thresholds are available for each of these values. Warnings can be sent or a switch reaction can be
parameterized dependent on whether thresholds are exceeded or the value falls below the threshold. (The
switch reaction can only be adjusted with the threshold values that relate to an output, i.e. no switch reac-
tion is possible dependent on the Frequency and Active power total.)
Each threshold value has an upper and lower limit. These are the hysteresis limits of the threshold values.
Exceeding a threshold means that the upper limit is exceeded, falling below the threshold means that the
lower limit is undershot.
Function of the threshold values
For every output, an evaluation delay can be set in parameter window
evaluation delay, the threshold value will not be examined for a possible overshoot or undershoot. The de-
lay for interpretation (evaluation) is at least 100 ms. Longer evaluation delay times may be useful when the
equipment connected to the output requires longer than 100 ms until a stable state is established after a
switching process (transient response).
If the evaluation delay has timed out and a threshold overshoot or undershoot is present, the warning is
immediately sent with the parameterized value.
A: General, page 51, i.e. before the
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