Safety switching arrangement
First Claim
1. Safety switching arrangement comprising at least two break switches which are connected in series to an evaluation unit, in which case the evaluation unit initiates a safety signal when at least one of the break switches opens, and determines which of the break switches has opened, at least one of the break switches having an associated code signal generator which, when the associated break switch opens, supplies to the evaluation unit a code signal which is characteristic of the relevant break switch via a line which leads to the evaluation unit and is common to all break switches associated with a code signal generator, which code signal is analyzed in the evaluation unit and is identified as coming from the relevant break switch.
1 Assignment
0 Petitions
Accused Products
Abstract
A safety switching arrangement has at least two break switches (12a, 12b, 12c) which are connected in series to an evaluation unit (11), in which case the evaluation unit (11) initiates a safety signal, in particular an alarm signal and/or disconnection signal, when at least one of the break switches (12a, 12b, 12c) opens, and determines which of the break switches (12a, 12b, 12c) has opened. At least one, and preferably all, of the break switches (12a, 12b, 12c) has or have an associated code signal generator (13a, 13b, 13c) which, when the associated break switch (12a, 12b, 12c) opens, supplies to the evaluation unit (11) a code signal which is characteristic of the relevant break switch (12a, 12b, 12c) via a line, in particular a diagnosis line (15) or safety line sections (16a, 16b, 16c), which leads to the evaluation unit (11) and is common to all the break switches (12a, 12b, 12c) associated with a code signal generator (13a, 13b, 13c), which code signal is analyzed in the evaluation unit (11) and is identified as coming from the relevant break switch (12a, 12b, 12c).
-
Citations
14 Claims
- 1. Safety switching arrangement comprising at least two break switches which are connected in series to an evaluation unit, in which case the evaluation unit initiates a safety signal when at least one of the break switches opens, and determines which of the break switches has opened, at least one of the break switches having an associated code signal generator which, when the associated break switch opens, supplies to the evaluation unit a code signal which is characteristic of the relevant break switch via a line which leads to the evaluation unit and is common to all break switches associated with a code signal generator, which code signal is analyzed in the evaluation unit and is identified as coming from the relevant break switch.
-
14. Safety switching arrangement comprising at least two break switches at least one of which has an associated code signal generator for generating a code signal which is characteristic of the associated break switch, an evaluation unit, the break switches being connected in series to the evaluation unit, and a line leading to the evaluation unit and common to all break switches which have associated code signal generators for supplying the evaluation unit with the code signal which is characteristic of the associated break switch, the evaluation unit analyzing the code signal and determining the break switch with which the code signal is associated.
Specification