| 摘要 |
<p>An optoelectric safety system which protects a free entrance or access opening in a machine's protective housing or protective cage at all times during operation. The system includes a reflection light scanner on the machine frame above and adjacent the floor at the front of the machine in the vicinity of the entrance or access opening, which emits a scanning beam covering a horizontal or inclined area and which generates an inner permanent protective field and an outer dynamic protective field.</p> |
