| 摘要 |
PROBLEM TO BE SOLVED: To simplify an electronic safety circuit by improving a diagnosis method of an electronic safety circuit of a conveying system.SOLUTION: The invention relates to an interface unit (1), a conveying system, and a method. The interface unit (1) comprises an input circuit (2) for signals (3a and 3b) determining safety of the conveying system. The interface unit (1) further comprises means (4a, 4b, 5a, 5b, and 6) for testing an operating condition of the input circuit (2).SELECTED DRAWING: Figure 1 |
