|
Missouri | Back before individual row unit clutches became popular, around here it was commonplace to install additional backshafts and drive chains, and use tru-count electric clutches to split planters into 4 sections. Of late, it has been popular to hook these clutches up to Ag Leader systems. The trouble with this is the massive inrush current on these clutches. They can draw over 20 amps (each!) if the solenoid plunger does not pull in. The four of them together are powered by a 10 gauge power wire, feeding a clutch control module, on a 30 amp fuse. It is common for these systems to blow fuses. We no longer install them, for that reason, but I still have used planters so equipped, that I have to service. Owners are becoming frustrated (understandably so) with this issue.
Some customers have replaced the fuse with a 40 amp, with mixed results. That will not be my solution, as I feel that much current is putting the clutch control module at risk.
I am working up a plan to solve this, and my working plan is to run a second power supply line, 4 relays, and split the clutches onto two circuits. I will hook the CCM up to four relays, one of them fed by circuit 1, the other fed by circuit 2.
I am seeking input on two subjects:
1) Enclosure for relays. Leading idea is a PVC double gang box, and a blank cover plate. Cheap, commonly available, adequate room for 4 relays, and sufficiently water tight. Not really any problems here, but open to better ideas.
2) Cost effective source of relays (30 amp or better, ideally). They need to be reasonably priced, and commonly available in the event replacements are necessary. I also need them available on short notice (schedule on this is PDQ!!, ideally will begin build tomorrow if time allows). I have implement dealers nearby, and also NAPA can get parts pretty quick.
Looking for any insightful ideas, please and thank you! | |
|
Planter with 4x trucount electric clutches. blowing fuses. looking for solutions.
