| 摘要 |
<p>A valve arrangement 1 having at least two valve modules 2,4,5, each having a valve element, the position of which can be changed by an actuator 13-13b and to which a position sensor 19-19b is allocated. A signal line arrangement 24 through which control signals can be transmitted is connected to the modules. In each module the actuator is provided with a controlling device 22-22b which is connected to its respective position sensor and evaluates control signals and monitors valve position for its respective valve module. In at least a first valve module the controlling device also evaluates the control signals for a second valve module and also receives signals from the position sensor of the second module such that the first module can determine the intended position of the second valve and monitor the position of the second valve. If there is a mismatch a safety valve may be operated.</p> |
