Quick Start Guide

Getting started with the UHV ESC.

In the Box

The following items are included in the box with each APD UHV ESC.

  • 1 x APD UHV Electronic Speed Controller

  • 5 x M6 (16mm) Cable Lugs (Wurth 5580616)

  • 1 x Signal Connector with Crimp Terminals (Harwin M80-4601442)

  • 1 x Quick Start Guide Card

Required for Setup (Not Included):

  • 2 x Power Cable (7 or 8 AWG)

  • 3 x Motor Cable (7 or 8 AWG)

  • Crimping Tool

  • 1 x Micro USB Cable

Firmware Check

Before starting up the UHV ESC, it is important that the ESC contains the latest firmware, ensuring maximum performance and that the most up to date features are included.

The APD ESC Configuration Tool is used to update ESC firmware, adjust ESC settings and view/manage logs stored from previous device usage.

The latest Configuration Tool can be downloaded from here: Download‚Äč

  1. Download the Configuration Tool to a Windows PC from the link supplied

  2. Connect the UHV to the computer using a Micro USB cable (not included), and run the Configuration Tool

  3. (Optional) Make sure the firmware is updated if supplied by APD

  4. Check relevant settings are applied

  5. Disconnect the ESC, perform the wiring setup

Wiring the ESC

When wiring the UHV ESC, we recommend you use high-temperature silicone insulation for the power cables. This ensures maximum thermal reliability is achieved.

7 AWG or 8 AWG wires are recommended, depending on the current draw of your application

The UHV ESCs contain an electrolytic capacitor bank that is designed for up to 3 meters of input power cable. Longer runs of cable should have the DC bus voltage measured to ensure this remains below +-10% of the input voltage. Extra capacitance can be added to minimise ripple.

If running the UHV from a power supply that can not absorb current (when the UHV is regen braking), this can cause damage to the unit or supply if the Synchronous Rectification is enabled. It can be disabled in the configuration tool, under the Advanced tab.

When attaching cables to the screw terminals of the ESC, care must be taken not to over-torque the terminal and cause it to shear. The maximum recommended torque to be used when attaching the cables is 3.9Nm.

Ensure clearance is maintained between the terminal lugs and the enclosure. While the enclosure is anodised and provides some electrical isolation, prolonged contact with the lugs may cause a breakdown in isolation. Use the recommended lugs where possible.

Powering Up

Before powering on the UHV unit, be sure to check all the power connections for cold solder joints. In addition to this, test the motor phase cables for shorts with a multi-meter.

Make sure input polarity is correct! Connecting the ESC incorrectly will damage the unit, and void any APD warranty.

End Points

In order for your ESC to perform correctly when using a PWM input, make sure that the end-points coming from the receiver are between 1000-1020 uS for the lower end-point and 1980-2000 uS for the upper-end point.

If the lower end-point is above 1020 uS, the ESC will not arm. Similarly, if the receiver is outputting less than 1980 uS, you will not experience the full power range.

The ESC's can receive up to 500Hz PWM, with standard TTL 3.3V or 5V inputs. If the input voltage is less than 2.7V, the drive voltage of the receiver is not high enough and the ESC will not respond to signal inputs.