Questions about ASCO solenoid valves
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I have a question: how does the air flow path work within the box? Why 2 bits and 3 states? Do 1 and 2 become connected, and 3 and 4 become connected, after power is applied? Then if it’s 3-way, why is it 2 digits?
The air circuit diagram inside the box refers to the internal air circuit structure of the ASCO solenoid valve. 2-position 3-way refers to a valve that has two operating positions and three channels, with two outlets in each channel. When the solenoid is powered, the piston inside the valve moves, allowing different channels to be connected. Specifically, in the unpowered state, channel 1 is connected to channel 2, and channel 3 is connected to channel 4 ； In the powered state, channel 1 is connected to channel 3, and channel 2 is connected to channel 4. The purpose of this design is to control the flow direction and switching of the gas. When the solenoid valve is energized, gas can enter through one inlet and then, via the channel system inside the valve, reach one of the two outlets, thereby enabling control over the gas. .
I suggest you open one to take a look and you’ll know; it’s also very easy to put it back together, it’s straightforward. A two-way three-port valve has one inlet, one outlet and one discharge port; a two-way five-port valve has one inlet, two outlets and two discharge ports, with one being single-acting and the other double-acting. The solenoid valve is essentially a single-acting exhaust circuit as well; it controls the sliding rod with a spring attached to the central shaft in order to change the alignment of the air passages, thereby enabling switching such that air intake and exhaust are disconnected from each other, and exhaust and air intake are also disconnected from one another. In the box, it should be connected to 1 and 4 when powered, and to 4 and 3 when not powered, right?
But from the diagram, it seems that power is applied when 1 and 2 are connected, as well as when 3 and 4 are connected! If that’s the case, then isn’t it 2 digits with 4 options?
Friend, could you give me your WeChat so I can ask you some questions?
There are only 3 ports and 5 ports; where is there a 4th port? One intake port, and one or two pairs of exhaust ports
One for intake, one for exhaust, and one for output
You need to hesitate a bit – you can block the 4 ports; from the diagram, it can be seen that ports 3 and 4 remain open at all times! This is equivalent to 2 and 4 being connected in the event of a power loss, which in turn causes 2 and 3 to be connected, allowing the gas at interface 2 to be released. When powered, 1 and 2 are connected. Summary: When powered, air enters the cylinder at 1 to 2; when power is lost, air exits the cylinder at 2 to 3! I’m not sure if it’s correct; feel free to discuss!
So if you hesitate for a while, he is merely using the internal air circuit of 4; he isn’t utilizing port 4 at all, only ports 1, 2, and 3