Re: [EVDL] Curtis Fault Diagnosis

[Peter VanDerWal via EV]

Not a solution to your current error code problem, but to turn off the motor, 
perhaps the BMS can make the throttle go to 0%?

My PGP public key: https://vanderwal.us/evdl_pgp.key

April 22, 2021 8:53 PM, "John Titman via EV"  wrote:

> Hello all:
> I 'm sorry my posting was incomplete. I contacted HPEVS and they told that
> under NO circumstances should
> I use a contactor to interrupt the high voltage supply to the controller .
> My reason to install the contacter was to
> provide the Orion BMS2 a means of activating a battery discharge control
> because I already run some cells
> too low while trying to discharge for balancing the batteries and I don't
> want to have the car towed home again.
> After I installed the contactor and the problems occurred, I removed it
> and the Curtis controller continues to
> flash codes 66, 65,56,55, and code 46, which indicates an EEPROM failure .
> HPEVS told me the Curtis . 1239e
> will have to come back to them for diagnosis The odd thing is that the car
> can actually be driven . Is it fixable?
> 
> On Thu, Apr 22, 2021 at 10:28 AM Lee Hart via EV  wrote:
> 
>> Paul Compton via EV wrote:
>> No BMS should ever just disconnect the battery under load, unless it's
>> a critical safety issue.
>> 
>> Paul is right. Every controller I know of only cuts back the output when
>> a low battery is detected. The vehicle just gets slower and slower...
>> but it will still move.
>> 
>> Disconnecting under load only happens if there is a crash, short
>> circuit, fire, or some other disastrous event.
>> 
>> Lee
>> 
>> --
>> A designer knows he has achieved perfection not when there is
>> nothing left to add, but when there is nothing left to take away.
>> -- Antoine de Saint Exupery
>> --
>> Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
>> 
>> --
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Re: [EVDL] Curtis Fault Diagnosis

[John Titman via EV]

Hello all:
I 'm sorry my posting was incomplete. I contacted HPEVS and they told that
under NO  circumstances should
I use a contactor to interrupt the  high voltage supply to the controller .
My reason to install the contacter was to
provide the Orion  BMS2 a means of  activating a  battery discharge control
because I already run some cells
 too low while trying to discharge for balancing the batteries  and I don't
want to have the car towed home again.
After I installed the contactor and the problems occurred, I removed it
 and the Curtis controller   continues to
flash codes 66, 65,56,55, and code 46, which indicates an EEPROM failure  .
HPEVS told me the Curtis . 1239e
will have to come back to them for diagnosis The odd thing is that the car
can actually be driven . Is it fixable?

On Thu, Apr 22, 2021 at 10:28 AM Lee Hart via EV  wrote:

> Paul Compton via EV wrote:
> > No BMS should ever just disconnect the battery under load, unless it's
> > a critical safety issue.
>
> Paul is right. Every controller I know of only cuts back the output when
> a low battery is detected. The vehicle just gets slower and slower...
> but it will still move.
>
> Disconnecting under load only happens if there is a crash, short
> circuit, fire, or some other disastrous event.
>
> Lee
>
> --
> A designer knows he has achieved perfection not when there is
> nothing left to add, but when there is nothing left to take away.
>  -- Antoine de Saint Exupery
> --
> Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
>
> --
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
> ___
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> No other addresses in TO and CC fields
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Re: [EVDL] Curtis Fault Diagnosis

[Lee Hart via EV]

Paul Compton via EV wrote:

No BMS should ever just disconnect the battery under load, unless it's
a critical safety issue.


Paul is right. Every controller I know of only cuts back the output when 
a low battery is detected. The vehicle just gets slower and slower... 
but it will still move.


Disconnecting under load only happens if there is a crash, short 
circuit, fire, or some other disastrous event.


Lee

--
A designer knows he has achieved perfection not when there is
nothing left to add, but when there is nothing left to take away.
-- Antoine de Saint Exupery
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com

--
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

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Re: [EVDL] Curtis Fault Diagnosis

[Gary Krysztopik via EV]

I agree with Jay.  But what are the fault codes?

Gary

On Thu, Apr 22, 2021 at 9:19 AM Jay Summet via EV  wrote:

>
>
> On 4/22/21 10:47 AM, Paul Compton via EV wrote:
> > No BMS should ever just disconnect the battery under load, unless it's
> > a critical safety issue.
> >
>
> Shutting down the charger (via CAN bus) or removing (AC) power from the
> charger via a relay would be a safer way to resolve a "cell high" alarm
> when charging.  [Or disabling regen if high-cell when driving...]
>
> In a "cell low" situation, a warning buzzer or reduction of throttle
> range (limp mode) is the safe way to allow the driver to park the
> vehicle safely.
>
> Jay
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Re: [EVDL] Curtis Fault Diagnosis

[Jay Summet via EV]

On 4/22/21 10:47 AM, Paul Compton via EV wrote:

No BMS should ever just disconnect the battery under load, unless it's
a critical safety issue.



Shutting down the charger (via CAN bus) or removing (AC) power from the 
charger via a relay would be a safer way to resolve a "cell high" alarm 
when charging.  [Or disabling regen if high-cell when driving...]


In a "cell low" situation, a warning buzzer or reduction of throttle 
range (limp mode) is the safe way to allow the driver to park the 
vehicle safely.


Jay
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Re: [EVDL] Curtis Fault Diagnosis

[Paul Compton via EV]

No BMS should ever just disconnect the battery under load, unless it's
a critical safety issue.

On Thu, 22 Apr 2021 at 05:18, John Titman via EV  wrote:
>
> Hello all :
> I have installed an additional contactor on my  project electric car to
> provide
>  a   means for the Orion BMS  to shut down the  the battery  in the event a
> low battery voltage is detected . I obviously damaged the  Curtis 1239e
> controller because now the controller flashes a multitude of fault codes.
>   Has any one experience with Curtis fault code diagnosis?
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-- 
Paul Compton
www.paulcompton.co.uk (YouTube channel)
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Re: [EVDL] Curtis Fault Diagnosis

[paul dove via EV]

Disconnect the additional circuits and see if they go away. Maybe you created 
ground loops.


Sent from AT Yahoo Mail for iPhone


On Wednesday, April 21, 2021, 11:17 PM, John Titman via EV  
wrote:

Hello all :
I have installed an additional contactor on my  project electric car to
provide
 a  means for the Orion BMS  to shut down the  the battery  in the event a
low battery voltage is detected . I obviously damaged the  Curtis 1239e
controller because now the controller flashes a multitude of fault codes.
  Has any one experience with Curtis fault code diagnosis?
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