| 摘要 |
A valve controller, for the operation of a latching solenoid valve, which is closely coupled to the valve and may be built into the solenoid. The controller stores energy sufficient to set the valve to a safe condition in the event of a power or control system failure. The controller additionally allows the valve to be controlled by a digital logic signal, which can be unmodulated, or for greater security can be modulated by a central controller, to ensure that the valve returns to a safe condition in the event that the central controller fails. The valve controller can be adapted for individual addressing of valves along a digital bus. |
