SXTune Documentation

Calibration & Control

Smart alternator control

Use the ECU's PWM alternator strategy only when the alternator and output hardware are compatible.

Control structure

The ECU parameters define PWM frequency, target battery voltage, proportional/integral gains, a throttle threshold that can disable alternator loading and a charge-warning voltage threshold. A base duty-cycle map versus battery voltage is also available on supported ECUs.

Commissioning

Confirm the alternator control interface and PWM polarity/frequency before enabling closed-loop control. Begin with conservative control authority and verify battery voltage over engine-speed and electrical-load changes.