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Bi-directional Throttle

Introduction

Starting with firmware version 6.025 or higher, you can configure a bidirectional throttle, where one side of the throttle range is assigned to forward driving, and the other side can be configured for braking, reverse driving, or both.

visualization of throttle ranges

Configuration

  1. Set the Throttle sensor source to match the analog input being used.

  2. Move the throttle as far as it can go in the “Forward” direction, and configure the Throttle full voltage to the voltage on the analog input at that point.

  3. Move the throttle as far as it can go in the "Reverse” or “Braking” direction, and configure the Throttle off voltage to the voltage on the analog input at that point.

  4. Configure the Throttle fault range to the voltage distance outside of the Throttle full voltage and Throttle off voltage parameters that indicate a throttle fault (either due to disconnection, a short, or damage to the throttle).

  5. Configure the Throttle deadband threshold parameter to the amount of voltage inside the endpoints that should still provide the maximum command for the corresponding forward/reverse band.

  6. Configure the Bidirectional Throttle Midpoint parameter (address 1987) to the midpoint of the bidirectional throttle range (at rest).

  7. Configure the Bidirectional Throttle Deadband parameter (address 1988) to the desired voltage width of the neutral deadband in the bidirectional throttle.

    This voltage will be centred on the Bidirectional throttle midpoint.

    If different deadbands are desired for either end of the neutral band, the midpoint will need to be shifted higher/lower.

  8. Configure the Reverse_Enable_Source and/or Regen brake source to ‘4’ for bidirectional throttle depending on desired behaviour, and enable the corresponding feature bits ( Features bit 1 for reverse, and Features bit 4 for analog braking)

  9. Enable Features4 bit 11 Bidirectional throttle