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3 Posts in this encyclopedia categoryGalvanic mains isolation
In the motor's idle or fault state, the motor connection terminals are
isolated from the mains voltage via a 3-pole, positively driven relay.
Guard locking device
Device to keep a guard in the closed position and connected to the
control system in such a way that the machine cannot run if the guard is
not closed and kept closed and the guard is kept closed until the risk
of injury is no longer present.