Near Intersection of I-35 & I-90 Southern Mn. | Two Hawk - 6/11/2017 23:13
Our sprayer had a single pole master switch to turn on power to three boom valve switches, we changed that to a double pole switch and used the second set of poles to connect the two wires that go to port A, simple and no relay or pressure switch needed.
Great idea, that would be a very safe way to accomplish the above. For those that are not familiar with a double pole switch think of them as two simple switches located side by side inside a single enclosure but instead of two handles there is only one. Each has its own sets of terminals so there would be four terminals or maybe more.
When the operator flips the handle to ON, each switch makes contact with its mate. One "half" of the switch would activate the Master switch on the three boom switch box to turn ON/OFF the sprayer as before. The other "half" would be used with the wires leading to Pins 10 & 11. This means the each side is completely separate electrically from each other. This means there is no danger of backing feeding into the 750 which might cause a problem.
A Double Pole Single Throw switch would be sufficient but these are sometimes difficult to obtain. A Double Pole Double Throw switch is usually more easily available. These would have two sets of three terminals side by side. If using one of these, you have extra terminals which is no problem. Just use the Center and bottom terminal for the Master on one side and the Center and bottom terminal for the 750 on the other side.
These are available in a momentary type as well. The momentary type would not be appropriate for this use as they return back to center or OFF when you let go. These DPDT switches are very common and can be wired in a variety of ways for various projects. Auto supply stores should carry them. |
Remote switch with Trimble FM-750 question.
