How to Tune udcofs on ZombieVerter VCU

DC bus voltage measurement offset.

Quick Reference

Param ID

Unit

dig

Range

0 — 4095

Default

🔍 See a sample config →

📖 What Does It Do?

DC bus voltage measurement offset.

🎯 Recommended Values

Default value: 0

Valid range: 0 to 4095

Tuning Strategy

Start with the default value and adjust in small increments. Monitor vehicle behavior after each change before making further adjustments.

💡 Tuning Tips

0 for most builds. Only set if voltage reads wrong at 0V input.

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🔗 Related Parameters

Other parameters in the Inverter Hardware category that work together with udcofs:

pwmfrq

enum

PWM switching frequency. Higher = cleaner motor but more IGBT heating.

deadtime

dig

IGBT dead time between high/low-side switching. CRITICAL safety param.

ocurlim

Overcurrent limit. If RMS current × √2 exceeds this, inverter trips.

il1gain

dig/A

Current sensor 1 gain. MUST be calibrated for accurate current measurement.

il2gain

dig/A

Current sensor 2 gain. Same as il1gain but for second phase.

udcgain

dig/V

DC bus voltage measurement gain.

snshs

enum

Heatsink temperature sensor type.

pwmpol

enum

PWM polarity. Depends on gate driver design.

pinswap

enum

Pin swap configuration. Swaps resolver sin/cos or other signals.

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