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Ag Leader Liquid Control questions
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tedbear
Posted 2/18/2014 06:17 (#3698522 - in reply to #3698307)
Subject: Re: Ag Leader Liquid Control questions


Near Intersection of I-35 & I-90 Southern Mn.
4WD - 2/17/2014 22:00

Thanks, I'm going to Harlan (HTS Ag) on Feb. 25, anyways, for some customer training.

I just like getting my "ducks in a row" ahead of time. I could tell, on some wiring cable photos, for 7 section or 10 sections, that the "high power" source came from the 2 pin plug, that is on that main battery power cable, so I assumed the "constant 12 volts" was from that source.

 Now that you mention, that AL modules only control ground, then I might assume that "inside their adapter cable" both 12 VDC are tied together {constant 12 VDC(higher amp load), and switched 12 VDC} .



The Liquid product module does not control ground. A Clutch Control Module for planter sections does.

The cable shown is a solenoid only cable. Common ground is picked up by the two pole connector on the top of the drawing and distributed to each section via push on terminals. The trigger for each section comes from the Liquid Product Control Module in the lower connector. This cable would be used if all sections used solenoid valves. There are 20 push on terminals. Ten of those are common grounds and the other 10 go to the pins for the various sections. Constant power would not be available for your ball valves.

There is another cable that would better suit your needs. I don't know the number. The upper connection would contain a constant power source as well as the ground. The lower connection would again go to the Liquid Product Control Module. The branches of the sections terminate in 3 pole weatherpak connectors. Each branch would contain a constant hot, a constant ground and the trigger for that section. The pattern and connector may match your valves or need to be manipulated. For the sections that are going to use a solenoid, the constant power wire is not used. Mixing in the solenoids is not a problem as long as the total amperage of the solenoids and triggers does not exceed the module's limitations. Since you will be having a total for four solenoids this may result in an overload.

It sounds as if you understand the difference between using the solenoid valves for "fence line" tips or actual sections. If you were going to use a solenoid on each end of the boom for a fence line tip then the wiring and programming would be different. The triggers for the Left and Right fence line tips would come out of some special locations on the black Auxiliary plug to the Liquid module. These extra tips are assigned to some unused switches. For most situations they would be OFF. These tips are plumbed as a branch off of the outer booms sections with the solenoid in between. When the operator decides that they want a fence line tip ON, they flip the appropriate switch. The screen display shows the fence tip as being ON with a triangle indicator. The tip will not come ON unless the outer boom section that it is fed from is also ON. The applied rate is still calculated on the "regular" width so the extra product is robbed from the entire system with each section putting on a tiny bit less than if the fence line were OFF.

Concerning the pressure transducer. First off, I wouldn't bother, but if you really want one then Raven is a choice. The Raven pressure transducer has a Conxall connector on it like Raven has used for years with their flowmeters. It is placed in the opposite direction to prevent confusion when hooking things up. You would need a cable to go from the Raven pressure transducer to the Auxiliary port of the Liquid module. The cable you show in the first post is probably the correct one but is not drawn completely accurately. The connector on the long branch needs to end with a 3 pin conxall rather than the connector shown. The jumper shown is for the implement switch. Since a sprayer rarely has an actual implement switch that connection must utilize a jumper or application will never take place.

Edited by tedbear 2/18/2014 07:08
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