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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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06-26-2014, 04:33 AM | #1 |
Not Yet Wild
Join Date: Feb 2014
Location: George, Western Cape, South Africa
Posts: 5
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Curtis controller EZGO PDS 36v welded solenoid
I am hoping to learn the finer details of how the controller determins welded solenoid contacts, in particular on the EZGO 36v PDS golf car?
I understand the essential principle that if a voltage drop of between 1 and 5 volts on the B+ terminal (w.r.t. B-) does not occur after the contacts are supposed to have opened, this forces limp mode and the 'welded contacts' diagnostic. I'm particularly interested in the timing aspects of this problem, with such questions as:
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06-26-2014, 07:23 AM | #2 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Curtis controller EZGO PDS 36v welded solenoid
The "Solenoid Welded" error occurs when the controller energizes the solenoid coil and the voltage on the controller's B+ terminal is not equal to, or in close proximity of, the voltage on the controller's J1 Pin-5. The error also occurs when the solenoid coil is de-energized and the voltage on the B+ terminal is not significantly less than the voltage on J1 Pin-5.
I'm not sure of the timing, but I'm pretty sure it is a simple comparison of the voltage at the two points vs the solenoid coil being on or off. The flaw in the logic is that it assumes the voltage on J1 Pin-5 is full battery pack voltage, so a false error can be generated if there is excessive resistance between J1 Pin-5 and the solenoid's battery side large terminal where the red wire from Pin-5 is connected. |
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curtis pds weld solenoid |
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