E-bike: Programming your e-bike

(Linked from Conversion to eBike)

External Documentation

The KT3 series is a popular line of smart displays that are used for managing settings. I am under the impression that it originates from Suzhou Kunteng Electronics Co., they have manuals and if you stumbled on this page looking for other models, you might want to visit them. Their server is very slow from time to time. Below are also cached versions, to save you from a waiting frustration.

There are three “Parameter Setting” chapters for 22 settings:

  • “General Project Setting” (3)
  • “P Parameter Setting” (5)
  • “C Parameter Setting” (14)

Setting Parameters

Setting is done with:

  • Arrow Up == UP
  • On/Off == ENTER
  • Arrow Down == DOWN

How “enter settings” work:

  • Start with “General Project Setting”:
    • Press ENTER long to start. When On, within 5 sec press UP+DOWN for 2 sec
    • Within a minute: Use UP or DOWN to change values if needed, click ENTER to store and go to next value.
    • After entering last setting (third, Metric or Imperial):
      • Press ENTER for 2 sec to save and finish, or…
      • Press UP+DOWN for 2 sec to get into “P Parameter Setting”
  • Continue with “P Parameter Setting”:
    • Within a minute: Use UP and DOWN to change values if needed, click ENTER to store and go to next value.
    • After entering last setting P5:
      • Press ENTER for 2 sec to save and finish, or…
      • Press UP+DOWN for 2 sec to get into “C Parameter Setting”
  • Continue with “C Parameter Setting”:
    • Within a minute: Use UP and DOWN to change values if needed, click ENTER to store and go to next value.
    • After entering last setting C14 press ENTER for 2 sec to save and finish.

In short, turn on – ENTER, directly UP+DOWN 2s, ENTER through the three General values, after last value UP+DOWN 2s for P Settings, ENTER P1… P5, UP+DOWN 2s, ENTER through C Settings and ENTER 2s to save.

Values

Tip: Write your settings down somewhere, if something breaks and you need a new device, you really wants these settings back.

Here are my values with their meaning, you can paste and modify it in a spreadsheet for your convenience.

G1 72 Maximum Trip Speed
G2 29″ Wheel Diameter
G3 m Metric and Imperial Units
P1 46 Motor Characteristic Parameter Setting
P2 0 Wheel Speed Pulse Signal Setting
P3 1 Power Assist Control Mode Setting
P4 0 Handlebar Startup Setting
P5 12 Power Monitoring Setting
C1 02 Power-Assist Sensor and Parameter Select Setting
C2 0 Motor Phase Classification Coding Setting
C3 8 Power Assist Ratio Gear Initialization Setting
C4 4 & 50 Handlebar Function Setting
C5 08 Controller Maximum Current Adjustment Setting
C6 3 Backlight Brightness Adjustment Setting
C7 0 Cruise Function Setting
C8 0 Motor Operating Temperature Display Setting
C9 0 Startup Password Setting
C10 n Automatically Restore Factory Setting
C11 0 Meter Attribute Selection Setting
C12 4 Controller Minimum Voltage Adjustment Setting
C13 0 ABS brakes of the controller and parameters of anti-charge control Setting
C14 2 Power-assist tuning parameters Setting

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