| 摘要 |
<p>A switching device (320) comprising switching means for switching at least one current phase between responsive current phase input (L1, L2, L3) and responsive current phase output (T1, T2, T3), the switching device being suitable for switching electrical current of a power circuit of an electric motor, further comprises: i) a first communication system interface (112) for a first communication system (240); ii) a second communication system interface (116) for a second communication system (241); and iii) a selecting unit (µC, 405, 410) adapted to select whether the switching device (320) is a master or slave in relation to said second communication system (241). Independent claim for a system.</p> |
