Not that I remember that this was a requirement for the GE EV1 controller. That would also not have worked for my controller, since the converter retained the automatic transmission, So as soon as the vehicle was started, the controller started “idling” the motor, to keep the automatic transmission pump up to pressure. The idling was simply a trim pot added to the accelerator pot and set low enough to not throw an error from excessive throttle input, which *was* checked during startup: you could not start the truck with the accelerator to the floor, but a slight idling voltage was OK. Braking did not affect the motor speed, apparently the brake switch input was bypassed. Even the reversing contactors were removed (or not installed) as the transmission provided F/R selection. No seat switch either, just “ignition” to go, after checking pre-close voltage on the controller output. Cor.
Sent from Mail for Windows 10 From: Gary Krysztopik via EV Sent: Wednesday, July 25, 2018 3:03 PM To: Electric Vehicle Discussion List Cc: Gary Krysztopik Subject: Re: [EVDL] Reposting, Still Need Help, 86 Year Old Uncle Still TryingAfter 34 Years to Get Bucket List GE EV1-B Based EV Car Running I know the manual doesn't specify, but usually you need to have your foot on the brake before putting a car in gear. Maybe they missed this detail in the manual. On Tue, Jul 24, 2018, 10:35 AM ptandjb Frontier via EV <[email protected]> wrote: > To All, > > > > I am reposting from last year asking for any available advice as me and my > cousin continue to try to help get my uncle's EV project started in 1984 to > a successful conclusion. > > > > I am still trying to help my uncle realize his main bucket list item while > there is still time. He has been working off and on for over 30 years to > slowly build an electric car. When he attempted to power it for the first > time last year the controller failed to trigger the contactors to send > power > to the motor. He said all he wants to do is to drive this car at least once > before he dies. He gets up every day and puts on his union machinist suit > and goes to work in a construction company warehouse in Ludlow > Massachusetts > doing maintenance and machinery repair. He has started talking about > retiring and would then need to find another location for the EV project > car > if it is not yet finished. So I was asked to come take a look. In my > distant past I have a degree in electrical engineering and have experience > with SCR controlled injection molding machines so theoretically I should > technically understand all documentation and pretty much understand how > things should work. > > > > > > The car chassis was hand built: > > > > http://ptandjb.com/eddiesEV1/carfront0491.JPG > > > > http://ptandjb.com/eddiesEV1/carside0490.JPG > > > > Overview of controller assembly: > > > > http://ptandjb.com/eddiesEV1/EV1fullview0483.JPG > > > > http://ptandjb.com/eddiesEV1/EV1closeup0485.JPG > > > > I had thought last year we had proven that the EV1-B controller was > defective and went back last month to try to disassemble and test the > controller. We repeated our original investigation, with SEAT and BRAKE > switches bypassed and KEY, FWD, and ACCEL switches appropriately set there > was no contactor activation. Looking more carefully at the documentation, I > realized that I had not considered STATIC RETURN TO OFF and PULSE MONITOR > TRIP requirements, and could no longer conclude I had proven the controller > defective. I was confused as the exact process (see confusing manual > excerpts below). Because I was not up to speed on these requirements, we > called it a day and I came home to study documentation and try to figure > out > a way forward. An initial successful outcome would be sending power to the > motors in forward or reverse in START ACCELERATION mode. > > > > From the manuals: > > > > The control circuit is energized by closing the Key switch, Seat switch, > and > moving the Forward or Reverse lever to either position and then depressing > the accelerator, thus closing the Start switch. This applies power to the > control card and, if the "static return to OFF" requirement and the pulse > monitor trip requirement are satisfied, turns on the PMT driver, which will > close the selected directional contactor, completing the circuit to the > traction motor. The directional contactor is controlled by the directional > switch. > > * STATIC RETURN TO OFF - this built-in feature of the control requires > the operator to return the directional lever to NEUTRAL anytime he leaves > the vehicle and returns. If the Seat switch or Key switch is opened, the > control will shut off and cannot be restarted until the Directional switch > is returned to NEUTRAL. A time delay (0.5 seconds) is built into the Seat > switch input to allow momentary opening of the Seat switch. This same delay > requires the Directional switch not be closed until both the Key switch and > the Seat switch have been closed for 0.5 seconds. > > * PULSE MONITOR TRIP - this function contains three features: The look > ahead, the look again, and the automatic look again reset. > > If 1 REC (the main SCR) is shorted or lA is welded. PMT will look ahead and > prevent F or R from closing if either condition exists. > > If 1 REC fails to commutate, or if lA power tips remain closed when they > should be open, the control will open F or R contactor. PMT will then look > again by testing for a fault and, if none, reclose F or R. If the fault > still exists, the F or R will reopen and remain open. > > If lA closes before a second commutation failure, the look again counter > will automatically reset. This eliminates the inconvenience of resetting > the > PMT with the key switch if the tripping is due to random noise. > > When the PMT circuit prevents F or R from closing, the PMT circuit can be > reset only by opening the Key switch. > > > > I have uploaded various relevant files from various sources to my web > domain > in directory where they can be viewed or downloaded: > > > > http://ptandjb.com/eddiesEV1 > > > > EV-1 Spec1.jpeg 1st page > original EV-1 controller spec sheet > > EV-1 Spec2.jpeg 2nd page > original EV-1 controller spec sheet > > EV1.pdf EV-1B > Troubleshooting Manual & Parts Lists (59 pages) > > EV1WireDiagram2.docx EV-1B Wiring Diagram as > Word Document > > EV1WireDiagram2pdf.pdf EV-1B Wiring Diagram as > PDF > Document > > EV1closeup0485.JPG EV-1B close-up view > > EV1fullview0483.JPG EV-1B full view > > carfront0491.JPG front view car > chassis > > carside0490.JPG side view car > chassis > > ev1maint1.pdf GE EV-1 > Troubleshooting and Repair Manual part 1 (22 pages) > > ev1maint2.pdf GE EV-1 > Troubleshooting and Repair Manual part 2 (19 pages) > > ge_ev1_rs_notes.pdf Roger Stockton's > EV-1 > SCR DC Motor Controller Notes > > ge_ev1_rs_notes.docx Roger Stockton's EV-1 SCR DC Motor > Controller Notes (edited) > > > > > > Before our next trip to Ludlow to further evaluate the EV1-B, I have some > questions: > > > > Is there anyone familiar with the GE EV1-B controller willing to talk to me > on the phone and/or correspond by email and/or make a visit to see the car > to render technical assistance? All reasonable expenses would be covered. > Also Facetime video call assistance is an option. > > > > Is there a way satisfy/bypass/eliminate the PMT requirement to rule that > out > as a problem? I have trouble figuring how to understand its function. > > > > If we prove a failure of the EV1-B controller does anyone have experience > working on this unit? > > > > If demonstrated defective, are there repair options available sufficiently > local to Ludlow Massachusetts that can visit the site or are there sites we > can bring or ship the EV1-B controller? A typical forklift repair > technician > may simply want to replace the EV1-B unit and not troubleshoot faults > inside > the unit. > > > > Is there a source for spare parts/technical support for the EV1-B > controller > if we get inside the box? > > > > Thanks in advance for help, if fortunate to succeed there will be a YouTube > video of a successful outcome. This email will be cross posted at > diyelectriccar.com and evdl.org. > > > > Paul Traceski > > > > > > > > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20180724/5eec270b/attachment.html > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20180725/a2c8fb89/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20180725/f374b112/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
