Please take a look at the operating principle of this valve
Thread Content
The air supply for these two larger solenoid valves connected to this switch is a bit difficult to see clearly; I hope everyone can help discuss and provide guidance on this.
Do 1# and 2# solenoids come from the same signal? If it’s the same signal, is this redundant? If it is redundant, such a configuration is not rigorous enough. If it’s not the same signal, it’s understandable
What don’t you understand? By activating the two solenoids one after another, you can determine the state of the valve; it’s a typical parallel air circuit – as long as one of the solenoids is powered, the air path remains open. .
One valve, two sensors that provide interlock signals; shuts down in case of power loss – this is the common configuration.
This is an installation diagram I saw in other projects. It’s estimated to be 2 signals. For the evening use, 1&0 was used to determine on/off, which I understand. I just don’t quite understand why two solenoid valves are used – when is it necessary to use two of them?
Once you understand how to control the signals, it will be clear. Just looking at the gas circuit isn’t enough
One connected to SIS, one connected to DCS
No, in a parallel air circuit, if the circuit is completed whenever any solenoid valve is activated, then the exhaust port of the first solenoid valve should be connected to the outlet of the second solenoid valve. (The air in the valve cylinder is exhausted through the exhaust hole, from the outlet of the second solenoid valve.) ) Please correct me.
The gas path is rather special; the keywords are not clear
If formal attire is worn, this air circuit is actually not very useful; the solenoid valve below serves no purpose at all. For now, let’s call the upper solenoid valve Solenoid Valve 1 and the lower one Solenoid Valve 2. The analysis is as follows: when Solenoid Valve 1 is powered and Solenoid Valve 2 is also powered, the air circuit is opened and the valves move； Solenoid valve 1 loses power, solenoid valve 2 gains power; the air path is blocked (solenoid valve 1 is closed, so air cannot enter the air path) ； Solenovalve 1 is powered, while solenovalve 2 is de-energized; the air source is discharged from the exhaust port of solenovalve 2, and the valve does not move. So whether the solenoid valve 2 is used or not has no effect. Unless solenoid valve 1 is installed in reverse, with the air outlet facing the air tank, this air circuit is formed in parallel.