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Author Topic: Zero S - 2011 -Changing BMS Parameter  (Read 1069 times)

Greenroad

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Zero S - 2011 -Changing BMS Parameter
« on: December 29, 2014, 02:32:07 PM »

Hello
how could i change the voltage Settings on the Zero BMS:
I found out, that my Zero cuts of the battery at an cell Voltage with 3,3V - thats about at 46V.
I like to go down at about 42V - minimum 3V each cell.

The problem is, with the aging of the pack, the battery voltage could fall easilier down, and so it would good, if it would possible to change this somewhere.
I try to find anywhere the possibility to change this - but no idea where.
I calibrate allready the Battery pack voltage.
I can get out at the pack about 64Ah - until cut off.

this are my battery status - at the moment the Zero gives an undervoltage failure code and switch off:
ZERO MBB> bms
****************************************
*               BMS Data               *
****************************************

  - Pack Percent Remaining    :  0%
  - Age of Capacity Data      :  756 ms

  - Pack Top Voltage          :  45424 mV
  - Pack Sum Voltage          :  45383 mV
  - Age of Top Voltage Data   :  2 ms

  - Bank Voltages             :  0001 0002 0003 0004 0005 0006 0007 0008 0009 0010 0011 0012 0013 0014
                              :  3265 3243 3216 3248 3268 3258 3221 3237 3238 3257 3219 3239 3247 3227
  - Imbalance                 :  53 mV
  - Highest Bank              :  5
  - Lowest Bank               :  11
  - Age of Bank Voltage Data  :  523 ms

  - BMS Board Temp            :  19 C
  - Pack Temp                 :  21 C
  - Age of Temp Data          :  489 ms

  - Charger Attached          :  No
  - Voltage Critical          :  No
  - Temp Critical             :  No
  - Age of Status Data        :  745 ms
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jateureka

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Re: Zero S - 2011 -Changing BMS Parameter
« Reply #1 on: January 07, 2015, 05:34:42 AM »

DrBass may be able to answer this one as he had a 2011 and did some mods to the battery pack.
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ZEV 7100 LR scooter, 2013
Zero S motorcycle, 2011
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