| 摘要 |
For a door or protective hood locking control system of a safety device with normal or excessive safety for machines, particularly machines carrying out rotational motions, a stoppage monitoring guard is disposed in the current circuit for the door locking mechanism that is operated by push-buttons. This stoppage monitoring guard is taken from a redundant, rotational motion signal evaluating system of the target installation of a rotational motion monitoring device, which is already present, and operates redundantly to monitor each axle with two rotational motion sensors so that a dedicated rotational motion sensing system can be dispensed with for the redundant operation of the door locking system.
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