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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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Thread Tools | Display Modes |
09-18-2017, 07:06 PM | #11 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,419
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Re: EZGO DCS problems
Quote:
Repaired controllers is the epitome of good money after bad |
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09-19-2017, 07:12 AM | #12 |
Gone Wild
Join Date: Aug 2014
Location: fletcher,nc
Posts: 601
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Re: EZGO DCS problems
DCS controllers have a fatal flaw and to rebuild is kinda like...... well,you see-i had this dog and he would not come when i called him-so i went over and started beating him-but he was dead..........................................
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09-19-2017, 10:40 AM | #13 | |
Not Yet Wild
Join Date: Jul 2015
Location: Lakeland, TN
Posts: 67
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Re: EZGO DCS problems
Quote:
Last edited by atr42flyer; 09-19-2017 at 10:44 AM.. Reason: pics |
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09-19-2017, 11:27 AM | #14 |
Not Yet Wild
Join Date: Jul 2015
Location: Lakeland, TN
Posts: 67
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Re: EZGO DCS problems
So I think I may have figured out where I went wrong. I have the A2 wire from the motor going to the solenoid. I have looked at other pictures and it appears to go to the B+ terminal on the controller?
On the wire diagram I was using from this site shows it going to the solenoid, so thats my excuse for wiring that way but it kinda makes sense, that is the reason for the B+ wire from the controller to the solenoid got so hot and running at half speed. Opinons? |
09-19-2017, 11:53 AM | #15 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: EZGO DCS problems
If the cable on the large solenoid terminal on the right side of the pictures is from the B+ terminal on the battery pack, the Diode/Resistor PCB assembly is installed correctly.
I cannot tell from the pictures, but if the small white wire with yellow stripe is connected the the left side small terminal that also has a red and a yellow wire on it, the control wiring is correct also. Neither the DCS nor the PDS had a discreet diode between the small solenoid terminals as it came from the factory, but adding one is probable a good idea. I suspect a spike suppression diode was incorporated within the controller. The Diode/Resistor PCB was unique to the DCS. The PDS only had a pre-charge resistor between the large terminals. This is speculation, but I suspect the diodes on the DCS PCB were there to prevent the controller from being over-volted if the solenoid de-energized while regen braking was occurring. I'm not sure why regen diodes weren't used for PDS drives, perhaps they were incorporated inside the controller. FWIW: Alltarax XCT controllers for DCS, PDS and TXT-48 all have regen diodes and spike suppression diodes, but no pre-charge resistors. ---------- I noticed the A2 cable is original and the cable lug doesn't look very good. That may be the heat source. |
09-19-2017, 12:05 PM | #16 | |
Not Yet Wild
Join Date: Jul 2015
Location: Lakeland, TN
Posts: 67
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Re: EZGO DCS problems
Quote:
Last edited by atr42flyer; 09-19-2017 at 12:06 PM.. Reason: carity |
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09-19-2017, 12:09 PM | #17 |
Not Yet Wild
Join Date: Jul 2015
Location: Lakeland, TN
Posts: 67
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Re: EZGO DCS problems
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09-19-2017, 12:13 PM | #18 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: EZGO DCS problems
Quote:
When the duty cycle of the PWM output of the controller is anything other than 0% or 100%, the Motor current is greater than Battery current, so the most efficient way to connect those two cables is the stack them on the controller's B+ terminal. However, the way those two cable are connected is not the source of your heat problem. |
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09-19-2017, 12:16 PM | #19 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: EZGO DCS problems
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09-19-2017, 01:22 PM | #20 |
Not Yet Wild
Join Date: Jul 2015
Location: Lakeland, TN
Posts: 67
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Re: EZGO DCS problems
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