Specification for the common wiring box for the solenoid valve and valve position switch on the pneumatic cut-off valve
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Hello everyone. There are 2 solenoids and a valve position switch on the cut-off valve. If we ask the manufacturer to provide a common junction box for them, what would be the specifications? What is the size of the electrical interface?
First of all, I should explain the control method for this valve. I really don’t understand how these devices are connected, so I can’t give you more specific advice... Let me make a guess casually: Option 1 is to have the manufacturer provide a wiring box, and they will take care of setting it up. You are the client; everything specified in the technical documents must be provided by the manufacturer, who will take care of it for you, so you don’t need to worry. Just provide the specifications. Option 2: Install an explosion-proof junction box yourself; a three-way or four-way version depends on your wiring setup. The electrical interface depends on the connection specifications of the equipment at the site; 1/2NPT or M20*1.5 are commonly used. Generally, two solenoid valves require two cables (2*1.5), and the feedback switch requires one cable (4*1.5); it is rather difficult to connect them all to one junction box……
How is it possible to connect them in one junction box? Force it in? Besides, the power cable for the solenoids is 2.5 mm2 in diameter, while that for the feedback signals is 1.5 mm2. Power and signal cables cannot be placed in the same junction box, and DI and DO signals generally should not either be placed in the same box. Additionally, there are 2 solenoids and 1 valve position switch. The use of 2 solenoids is likely required to ensure interlock redundancy; given that dual solenoids are necessary for safety reasons, why is only 1 valve position switch provided? You’ve got it backwards; it doesn’t match the design principles at all. If you really want to put them in a box, I’d suggest using 3 pieces of 1/2\" NPT fittings – after all, with just 3 signals there’s no issue of conflicts. If you write it backwards, then 2 pieces of 3/4\" NPT fittings would work; the reason goes without saying
In this format, the solenoid valve is directly integrated into the position feedback. The price is high. But it just involves integrating a 2/3 or 2/5 pilot solenoid valve; those two solenoid valves are indeed difficult to install. Those who need information can contact me
A three-way wire gland can be solved with just a few flexible tubes.