Skip to content

Assist Configuration

Introduction

Assist levels allow the rider to adjust their maximum power and speed. Depending on the type of displays or buttons that are used these levels can be adjusted.

Assist levels set the assist gain and assist speed limit, these parameters limit the output current/power and active speed limit if in a speed-limiting mode respectively. Their range is 0 to 1.0pu, for 0% and 100% of the active motor output power limit or speed limit respectively.

Assist mode source configuration

assist speed limit and assist gain always = 1.0 pu.

Note

ASI Supports analog voltage ranges from 0-5V (devices such as JT405 and potentiometers are commonly used)

Assist low voltage reading uses Assist gain 1 and Assist speed 1 for the low assist level and linearly interpolates to 100% assist at Assist high voltage reading.

  1. Connect the analogue assist device should be connected to the Brake 2 input of the controller.
  2. Setassist mode source to 1 (analog)
  3. Poll and read the brake 2 voltage input to measure the analog assist levels.
  4. Enter the level 0 (or low assistance switch position if not a POD) assist voltage (no LEDs on) into Assist low voltage reading
  5. Enter the level 3 (or high assistance switch position if not a POD) assist voltage into Assist high voltage reading

Uses Assist gain 1 through Assist gain 3 and Assist speed 1 through Assist speed 3 as the 3 points about which it interpolates the assist gain and assist speed limit

Note

Displays typically send a PWM value, but are not always consistent. Thus, a 3-assist level display may not match 1:1 with the values set above and may use interpolation to determine the assist gain and assist speed limit from that.

This applies to assist levels from displays sending more than 3 "Assist levels". For example, with 5 assist levels, 1 typically maps to Assist gain 1 and Assist speed 1, 2 will interpolate to a value between Assist gain 1 and Assist gain 2, and Assist speed 1`` andAssist speed 2`, Etc.

Assist level 0 from the display will result in assist gain and assist speed limit being set to 0 pu, assuming the display sends a PWM value.

Write to speed limit gain and assist limit gain respectively. Renamed Display speed limit command and Display assist level command at some point.

Set Assist gain 1 through Assist gain 9 and Assist speed 1 through Assist speed 9 respectively.

Write to Remote assist mode a value between 0 and 9 to set the assist leveland assist speed limit respectively. Note, 0 corresponds to assist level and assist speed limit being set to 0 pu.