Is there an electric valve that can be switched on and off with just 1 DO point?
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Electric cut-off valve, 220VAC power supply; typically, the DO terminal has one wire for opening and one wire for closing. I would like to ask: Is it possible for an electric cut-off valve to be controlled using just one DO signal, where an active signal means the valve is open and an inactive signal means it is closed? I hope everyone can help me with this!
Some can be achieved; you need to consult the manufacturer of the electric actuator – some manufacturers provide one DO, while others provide two DOs.
Is this electric valve a two-position control? Only two states: on and off?
To achieve this function, electric valve support is also required
This doesn’t seem very realistic. Electric valves usually have two DO signals: a value of 1 indicates forward and reverse rotation of the motor, while a value of 0 means stop. When you are in DO mode, does a value of 1 mean forward rotation or reverse rotation?
This post was last edited by shiwendong on 2017-9-6 23:17. Hello. Electric cut-off valve, 220VAC power supply; typically, the DO terminal has one wire for opening and one wire for closing. I would like to ask: Are there electric cut-off valves that can be controlled using just one DO signal – where an active signal means the valve is open, and a inactive signal means it is closed? Yes, such valves exist. You can contact me via QQ at 414169474, or leave your email address; I’ll send you the relevant information. However, since the information includes company names and contact details, sharing it is considered advertising, so it’s not possible to distribute it for reference. Those who need it can leave their email address or add me on QQ
1 Using an electromagnetic cut-off valve 2 Using a pneumatic cut-off valve 3 An electric cut-off valve is certainly possible, but it is rarely used in practice
There is a foreign manufacturer that produces electric valves capable of spring-driven reset in the event of a power loss; I heard this from colleagues, but I haven’t used such valves myself.
Electric valves generally have open and close control commands, DO points for indicating when they are fully open or fully closed, as well as DO points for torque protection when they are fully open or fully closed. Therefore, I believe that from a safety perspective, your request cannot be fulfilled.
I’ve never heard of it. How about you develop such an electric valve? It could also help save some cable. Was it designed incorrectly?
If the pneumatic valve is acceptable, a single-acting actuation structure can be used. For the electric actuation structure you mentioned, which requires the motor to rotate in both forward and reverse directions, it’s likely not feasible to implement that. I haven’t seen it