48 volt TXT charge receptacle failure??

[JohnnieB]

Originally Posted by cgtech

I believe it alters the profile based on temp, not sure if it will totally refuse to charge based on temps alone.

Thanks, the second picture clarifies why the cart's charge receptacle is so complex.
The PCB is made by Delta-Q, so it is an integral part of the Delta-Q charging system.

Appears to be three circuits.
1. Main charging circuit. Top two connectors in first picture connect to the heavy red and black wires to main battery pack terminals. Red wire (+) has a 30A fuse in it. Any charger other than the Delta-Q should use these two connectors only.

2. Controller disable circuit. Probably measures the impedance (resistance) between the two main connectors to determine if anything is connected to them. If there is, pack voltage is removed from the blue wire.

3. Temperature sensing circuit. The small red and black wire go to a thermocouple or thermistor the ring terminal that is attached to a battery stud. The voltage between the Negative charging connector and the third (bottom) connector tells the charger what the battery voltage is.

With the battery temperature information being fed to it, the charger would have the information needed to refuse to charge, or to terminate a charge, if the battery was, or got too hot, but it may not be designed to do so.

Of you want to find out, remove the temperature sensor from the battery stud and heat it with a hair dryer.

[cgtech]

Originally Posted by JohnnieB

Thanks, the second picture clarifies why the cart's charge receptacle is so complex.
The PCB is made by Delta-Q, so it is an integral part of the Delta-Q charging system.

Appears to be three circuits.
1. Main charging circuit. Top two connectors in first picture connect to the heavy red and black wires to main battery pack terminals. Red wire (+) has a 30A fuse in it. Any charger other than the Delta-Q should use these two connectors only.

2. Controller disable circuit. Probably measures the impedance (resistance) between the two main connectors to determine if anything is connected to them. If there is, pack voltage is removed from the blue wire.

3. Temperature sensing circuit. The small red and black wire go to a thermocouple or thermistor the ring terminal that is attached to a battery stud. The voltage between the Negative charging connector and the third (bottom) connector tells the charger what the battery voltage is.

With the battery temperature information being fed to it, the charger would have the information needed to refuse to charge, or to terminate a charge, if the battery was, or got too hot, but it may not be designed to do so.

Of you want to find out, remove the temperature sensor from the battery stud and heat it with a hair dryer.

Yep, all what you said true. Finish voltage likely modified for temp, amp rate surely reduced at both ends of temp spectrum. Yep, made by Delta-q.

[Expat]

any one know what's the expected votage to the top terminal (green wire) to the powerwise charger so that it will charge? after all the safety curcuitry in the receptaplacle

I measure 7.62k ohms on the thermistor and and it decrease when heated with a lighter. I = 48v/7 k ohms into that board in the receptacle but what comes out of it and needs to be seen at the charger?

[sonnysmith]

CG Have you found away around the plug in? So that we can use a DPI charger.
What ever happened to plug and charge.

[cgtech]

Yep, Dpi charger ignores that temp wire completely. The led doesnt do anything either with a Dpi charger. Works just fine w/o the 3rd wire. If you open the dpi handle, the third wire is not connected at all. Works fine, but no led indicator on the cart. I have used lester chargers from the 80s to charge them through the stock plug, with homemade adapters, still works fine, without the cart led indicator doing anything. Only delta-q chargers will make the indicator on the cart work, too bad for the OCD folks.

[Expat]

power wise needs to see about +4v on the greeen wire in order to kick in. 2013 rxv

[sonnysmith]

CG If I use the DPI charger, will it still provide the 48 v to the controller??? or am I looking at two different things.
I'm still trying to figure out this new system.

Thanks

[HiTechRedNeck]

Yep 2 different things.

DPI CHARGER will not provide any signal to controller.....
So Cart will drive off with charger connected and jerk controller off wall.

Charge receptacle on CART will deny signal to controller if stock charger is used,
to prevent Drive off with charger connected.

[sonnysmith]

Hi tech
So this is like bypassing the reed switch on txt. My next question, there is a plug on the back side of rec. that comes from pos. post. Will that still have pack voltage going to the controller using the DPI charger?
Lots of question.
Sorry

[HiTechRedNeck]

Using DPI charger bypasses safety feature built into cart.... effectively the same as bypassing reed switch on txt.