Seeking help with the wiring diagram for control schematics
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220V solenoid valve, intermediate relay, PH alkalinity detector – one set of normally open contacts each for high and low limit alarms. The power supply is 220V; it is required that the solenoid valve stop operating when the alkalinity level reaches the upper limit, while the valve should open automatically when the level reaches the lower limit Please, an expert, draw a circuit connection diagram for me~! :)
This post was last edited by Hasty Passer on 2017-11-21 at 16:16. The schematic diagram is shown in the image: Among them, 1J is the coil of the intermediate relay; H contact is the high-alarm contact (normally open); L contact is the low-alarm contact (normally closed). DF is the coil of the solenoid valve. 1J1 and 1J2 are contacts on the intermediate relay; 1J1 is a normally open contact, while 1J2 is a normally closed contact. Operating process: 1. Power is applied: 1J does not get energized; 1J2 closes, causing DF to be energized and the solenoid valve to open. 2. High H alarm: The H contact closes, 1J is powered, 1J1 closes, 1J2 opens, DF loses power, and the solenoid valve shuts off. 3. L low alarm: The L contact opens, 1J loses power, 1J1 turns on, 1J2 closes, DF receives power, and the solenoid valve opens. Since the specifics of solenoids, relays, and detection alarms are not clear, I’ll provide a schematic diagram for now; you can handle the rest on your own.
Hello, thank you for participating. I’m asking: since there’s a concern that the PH detector might malfunction, we’re adding a level interlock system. How should the wiring for the high-level shut-off valve be set up? No CAD diagram is needed; a hand-drawn sketch will suffice:$
Thank you all for your participation. I’m worried now about the delay in PH detection data; adding a level interlock is not necessary – just using an upper limit interlock to shut off the valve will suffice. How can this interlock be added to this circuit?
Add a high liquid level interlock; but how should the wiring be connected?:$
In the diagram, swap H and L, and use a normally closed contact for the higher H value, right?