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You explained it well, Ray. But to explain my “obsessions” in the use of relays and an external transformer, I’ll put it together.
* 1 – Why a transformer? the controller is not loaded with coil current. the relay load is 30 – 40 mA. load on the solenoid valve coil depending on the model 150 – 250 mA. If we open one or two solenoid valves, there is no problem. However, if we want to squeeze out of the maximum from controller, we often open 10 to 15 solenoids at a time. This is too much, open sprinkler stops working stably and stops responding. In my case, the programs overlap and operate independently at different times in different locations.
* 2 – Failure caused by human error or failure in the field, without the use of relays, the controller fails.
* 3 – it looks good 🙂
I’m sending another photo
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We mainly grow strawberry, haskap, raspberry, cauliflower, cabbage and carrots. The rest of the crop does not occupy a large area, we treat it as a test. The farm covers about 170 ha, of which open sprinkler manages irrigation for 70 ha. attached, I am sending a picture of my today’s unfinished work which is supposed to manage 18 valves for 4 ha.
Hello everyone, I want to show you my irrigation system based on the open sprinkler. I’ve been developing it for several years.
The general rule is that I have one centrally placed open sprinkler in the office that controls the others. There is a high-power omnidirectional antenna on the barn. Receiving stations are scattered in a radius of several kilometers, usually one station supports solenoid valves located up to 1000m, although this is not the rule. Each receiving station consists of a directional wifi antenna and of course an open sprinkler. In the stations I have placed the 24V AC power, the Open Sprinkler is powered with it. But the device does not give current directly to the solenoid valves, I have used the relays, thanks to them the open sprinkler is not overloaded.
The photos that I added show my first control box in one of the pumping stations. I placed there an inverter, a temperature sensor with hot air extraction and a professional alarm system. It cuts off the power supply after exceeding the maximum pressure, fire, and informs about the lack of electricity.
The control cabinet was created last year to prevent water from flooding electronics and rebuild the system after a fire caused by a broken pipe.
I was supposed to put an automatic fire extinguisher in there but I gave it a rest 🙂Soon I will get more photos from my farm
Regards Jacek
hi Ray.
I eliminated the problem of switching off the section after a few seconds, the reason was in the controller from another company. But he’s gone and I’m just working on an open sprinkler. However, there are further restrictions, I can activate the special section only for about 1 minute 47 sec. I tried in many configurations with refreshing, no refreshing etc. In the forum # 46113 I read that software 2.17 has a problem is the possibility of repairing this in a simple way, but not for me. I have never done this and I do not know where to start.And now the question to you, can you improve the software so that the remote sections function?
On my farm I use 6 open sprinklers, they manage the irrigation system for about 100 ha, the problem arises when I have to make corrections due to weather conditions or other unforeseen factors. I make changes in the open sprinkler located in the pumping station and then I have to correct everything in the devices located on the plantations. Frequently there are errors due to hurry, in the previous season, as a result of one mistake, I ripped the main irrigation thread.I would be very grateful for your help
Regards Jacek
Without the special section, the remote valves are not activated at all. With special section remote valve starts, but only for several seconds.
I tried changing options in hundreds of ways but without effect.
What can i do wrong?
