Load current detection now with a four-fold increase in accuracy

Switch actuators with current detection are used predominantly where feedback of the actual switch status of the connected load is important. This provides transparency about the state of the building and simplifies monitoring. With the new ABB i-bus® KNX Switch Actuators with Current Detection, ABB has improved the load current detection by a factor of 4 in comparison to preceding types.

The maximum load current per output is 20 A. Thus monitoring of the loads from 0.02 to 20 A is possible and that at an accuracy of +/- 2% of the measured value and a resolution of 0.02 A. The measured value (RMS value) can be sent as a 2 byte or 4 byte value on the KNX bus or can be evaluated directly. The response of the switch outputs can be set in dependence on the measured load currents via a threshold function.
In addition to the well-proven function options of the ABB i-bus® KNX ETS application for switch actuators, the new application program offers an additional copy and exchange function for parameterised output channels. This simplifies commissioning and prevents errors when the same parameter settings are to be used on several output channels.
Using a conversion function, the parameter settings and the group addresses of the predecessor types can be simply uploaded into the new application. Thus, a problem-free
exchange or modification of ABB i-bus® KNX Switch Actuators is guaranteed.