lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Modified Golf Carts > Extreme DC! > All things Lithium


Post New Thread  Reply
 
Thread Tools Display Modes
Old 02-21-2020, 05:10 PM   #1
FloridaMike
Not Yet Wild
 
Join Date: Feb 2020
Posts: 5
Default Zeva BMS - something is amiss

Is there a status light and/or power light that is supposed to illuminate on the Zeva BMS? I have the Elcon charger CAN BUS enabled which is hooked up and when I connect things the Zeva screen has the alarm: No comms to EVMS
and then it displays, "ZEVA EVMS monitor waiting for data..." and nothing happens. I checked all my connections and they seem correct.
I emailed Ian but not sure the time difference to AUS and when he'll view it so I'm asking the collective audience of experts.
It's a ZEVA BMS16 V2.
My voltmeter shows 14v across the "12V Out" and "ground" on the BMS unit.
It is connected to the Elcon charger via a hall sensor from Ian also.
Maybe I'm missing something obvious? or a faulty BMS?
Does it mean the BMS is not communicating to the EVMS monitor?
FloridaMike is offline   Reply With Quote
Alt Today
BGW

Golf car forum Sponsored Links

__________________
This advertising will not be shown in this way to registered members.
Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum
   
Old 02-22-2020, 07:46 AM   #2
BBBHC
Gone Wild
 
BBBHC's Avatar
Club Car
 
Join Date: Jul 2018
Location: Central Ohio
Posts: 1,720
Default Re: Zeva BMS - something is amiss

Can you post a picture of your BMS unit? I believe I have v2 as well, but can't remember for sure. Mine has a status light on it. Only seen it light up solid green when on and blinking green when in sleep mode.

Maybe draw out a diagram of your wiring for us to see how you wired it all.

I'll see if I have a picture of my unit, for comparison.
BBBHC is offline   Reply With Quote
Old 02-22-2020, 08:02 AM   #3
Sergio
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
Default Re: Zeva BMS - something is amiss

Make sure the CAN-H and CAN-L wires are wired properly in all connectors.

How did you "chain" the CAN devices?

The monitor is an end device (built in terminator resistor), the Elcon charger if at the end of the chain may need a 120Ω terminating resistor depending on cable length and external noise.
Sergio is offline   Reply With Quote
Old 02-22-2020, 08:06 AM   #4
BBBHC
Gone Wild
 
BBBHC's Avatar
Club Car
 
Join Date: Jul 2018
Location: Central Ohio
Posts: 1,720
Default Re: Zeva BMS - something is amiss

Here is a picture of mine. Indicator light circled in red.

IMG_1768 - Copy - Copy.jpg
BBBHC is offline   Reply With Quote
Old 02-22-2020, 08:29 AM   #5
BBBHC
Gone Wild
 
BBBHC's Avatar
Club Car
 
Join Date: Jul 2018
Location: Central Ohio
Posts: 1,720
Default Re: Zeva BMS - something is amiss

Quote:
Originally Posted by Sergio View Post
Make sure the CAN-H and CAN-L wires are wired properly in all connectors.
Good point, I forgot about that. Here is a link to a post in my build thread where I pointed out the mistake in the Zeva instructions http://www.buggiesgonewild.com/lithi...ml#post1594314
BBBHC is offline   Reply With Quote
Old 02-22-2020, 08:52 AM   #6
FloridaMike
Not Yet Wild
 
Join Date: Feb 2020
Posts: 5
Default Re: Zeva BMS - something is amiss

Hey guys-
For the wiring diagram I used the popular one from Jeff Caldwell.

The yellow wire up top is the black wire coming off the gigavac.
The LV Relay blue wire goes to the negative terminal block.
The Elcon charger +/- are the red/black #10 wires to the corresponding terminal blocks.
Leaving the BMS CAN BUS are 2 sets of wires, one goes to the monitor, the other goes to the current sensor. Other side of current sensor CAN BUS goes to charger. Current sensor does have a blue LED that lights up.
No LEDs light up anywhere on the BMS.
Ian has been trying to help also.
Possible to have a broken BMS?
Attached Images
File Type: jpg C3HADD.jpg (65.4 KB, 0 views)
File Type: jpg ZZtHnF.jpg (51.0 KB, 0 views)
FloridaMike is offline   Reply With Quote
Old 02-22-2020, 08:58 AM   #7
FloridaMike
Not Yet Wild
 
Join Date: Feb 2020
Posts: 5
Default Re: Zeva BMS - something is amiss

Also, when I put a voltmeter across the red and black circular accessory terminal blocks should I get a reading around 58v? I don't.
What activates the Gigavac contactor to allow voltage to pass? or is that not how it works?
Attached Images
File Type: jpg ZZtHnF.jpg (74.6 KB, 0 views)
FloridaMike is offline   Reply With Quote
Old 02-22-2020, 09:23 AM   #8
Sergio
Gone Wild
 
Sergio's Avatar
Club Car
 
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
Default Re: Zeva BMS - something is amiss

The gigavac in that setup is activated by the LV+HV relays in the zeva.

If the zeva sleep switch is connected to negative, the Zeva will not activate the gigavac.

It is hard to tell from your pictures where the cell tap wires are going.

Do a quick test to make sure they are all wired properly.

Put the meter negative probe on terminal 00 and keep it there.

Move the positive probe to each of the ports in sequence and make sure the voltage goes up by approximately 4v for each port number.

Ports 14 and 16 should measure pack voltage.

Is the other black wire on the terminal block going to pack negative?
Sergio is offline   Reply With Quote
Old 02-22-2020, 10:08 AM   #9
FloridaMike
Not Yet Wild
 
Join Date: Feb 2020
Posts: 5
Default Re: Zeva BMS - something is amiss

Hey Sergio-
Yes, just checked with the voltmeter. Voltage rises for each sequential port and peak voltage at 14 and 16.
Yes, the other black wire on the terminal goes to pack negative.
I just took the sleep switch off and it has the same behavior.
FloridaMike is offline   Reply With Quote
Old 02-23-2020, 08:54 PM   #10
FloridaMike
Not Yet Wild
 
Join Date: Feb 2020
Posts: 5
Default Re: Zeva BMS - something is amiss

I believe that I have a faulty BMS. I can find no other reason.
There is no status LED lighting up at all...ever. I have checked all my wiring a dozen times. I will talk to Ian some more.
FloridaMike is offline   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Modified Golf Carts > Extreme DC! > All things Lithium


Thread Tools
Display Modes


Similar Threads
Thread Forum
Zeva confusion.... All things Lithium
Zeva BMS Settings Lithium Club Car
ZEVA is on BGW. All things Lithium
Zeva & TC Questions All things Lithium
Zeva sleep issues All things Lithium


All times are GMT -5. The time now is 08:37 AM.


Club Car Electric | EZGO Electric | Lifted Golf Carts | Gas EZGO | Used Golf Carts and Parts

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
This Website and forum is the property of Buggiesgonewild.com. No material may be taken or duplicated in part or full without prior written consent of the owners of buggiesgonewild.com. © 2006-2017 Buggiesgonewild.com. All rights reserved.