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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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09-07-2018, 11:43 AM | #11 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Reverse Beeper sound?
The only commonality I see between solenoid and beeper is they share a single wire between one of the solenoid's small terminal and the B- terminal on the controller.
I cannot reconcile why the beeper gets louder on lower voltage, but the fact the voltage gets lower is an issue. The red wire to MS-2 and is further connect to MS-4, is connected to the battery packs main positive terminal via the reed switch and the white charge cable and possibly a 50A or 60A fuse, or from a reed switch bypass. The instant the solenoid contacts close, there is a current spike of about 5A or so (solenoid coil initial current and controller electronics startup) and that drops off to 2A or less in a fraction of a second. The battery pack is capable of delivering hundreds of amps, so a 5A spike should cause much of a voltage drop in the pack voltage, yet there is a 1.2V drop at the beeper. That tells me there is excessive resistance someplace between the main positive terminal on the battery pack and the beeper. |
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09-08-2018, 03:32 PM | #12 |
Not Yet Wild
Join Date: Aug 2018
Location: West Columbia - TEXAS
Posts: 16
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Re: Reverse Beeper sound?
Still scratching my head on this one...
I do indeed bypass the reed switch (years ago) basically a hot wire from pack B+ to microswitch on F/R switch (the MS closest to batteries - has blue wire and the bypass wire and one that goes to other MS) I have replaced the 2 wires from the small terminal on solenoid to J1 on controller, and to the beeper on the F/R switch. The only thing I have not done is replace the connections at the 4 pin Molex plug. |
09-08-2018, 03:45 PM | #13 |
Gone Wild
Join Date: Dec 2009
Location: Aiken, SC
Posts: 13,141
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Re: Reverse Beeper sound?
Could be a bad ground wire going back to the solenoid. Run a jumper and see what happens.
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