Safety switching device for electrically controlled machines

Details Safety switching device for electrically controlled machines Safety switching device for electrically controlled machines

1999-03-09

2000-12-12

Ballato, Josie

Electrical transmission or interconnection systems

Switching systems

Condition responsive

H01L 2982

Patent

active

061603236

ABSTRACT:
The invention relates to a safety switching device (1) for electrically controlled machines, for use in combination with the control elements of the machine control-system itself during manual operation, in which the multi-action safety switching device (1) has several channels or several switching circuits (7, 8) and the switching circuits have at least one operating element (2, 3) which can be adjusted by an operator depending on the desired switching function. Each switching circuit (7, 8) has at least one position-sensing device (14, 15), comprising in particular contactless detection devices (16, 17) for detecting, at any time, the position (4 to 6) of the operating elements (2, 3) corresponding to the respective switching stages, which can be adjusted by the operator.

REFERENCES:
patent: 4575781 (1986-03-01), Weber
patent: 4618823 (1986-10-01), Dahlheimer et al.
patent: 4652205 (1987-03-01), Ross et al.
patent: 4812674 (1989-03-01), Sue et al.
patent: 4814632 (1989-03-01), Glaeser et al.
patent: 5280622 (1994-01-01), Tino

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