How to Tune ocurlim on ZombieVerter VCU

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

Quick Reference

Param ID

Unit

Range

-65536 — 65536

Default

100

🔍 See a sample config →

📖 What Does It Do?

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

🎯 Recommended Values

Default value: 100

Valid range: -65536 to 65536

Tuning Strategy

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

💡 Tuning Tips

Set to: (motor max current × 1.414) + 20% margin.

For Leaf (400A): 400 × 1.414 × 1.2 = 679. Start around 700.

Negative if il1gain/il2gain are negative.

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🔗 Related Parameters

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

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.

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.

udcofs

dig

DC bus voltage measurement offset.

pinswap

enum

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

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