Parameters

This document provides an overview of configurable parameters and internal states for the IGNIS starter-generator firmware.

Parameters

Parameter Name	Unit	Description
start_threshold	V	Phase voltage threshold to determine if the engine has started. Voltage above this level is considered as engine started.
start_level	-	Driver command during engine start (mode 3). Corresponds to speed.
pullback_level	-	Driver command during engine pullback operation (mode 3). Corresponds to speed.
max_trials	-	Maximum number of engine start attempts. 0 for unlimited attempts.
hyst_tim	ms	Duration for voltage hysteresis. If phase voltage exceeds battery voltage for this duration, the engine is stopped (useful for engine overspeed or battery undervoltage).
pullback_tim	ms	Duration of pullback operation. Set to 0 to disable pullback.
start_tim	ms	Maximum allowed duration for a single engine start attempt. After this period, a pause is initiated before retrying.
pause_tim	ms	Duration of pause after an unsuccessful start attempt.
noload_tim	ms	No-load operation duration immediately after engine startup.
ramp_tim	ms	Duration for ramping up from no load to full load after startup.
IN_gen	-	GDIN ID for generator start input: 0: Disable input, start engine directly with controller. 16: GDIN0 17: GDIN1 18: GDIN2 19: GDIN3 20: GDIN4 32: din1 ... 39: din8

tip

To tune your generator currents and voltages, you need to check the driver settings:

• Your motor phase starting current is the iref
• Your motor phase running current is the irefr
• For battery minimum and maximum voltage, use /driver/limiter/ubmin resp /driver/limiter/ubmax
• For battery currents, use /driver/limiter/ibpos resp /driver/limiter/ibneg

States

State Name	Description
mode	Current operating mode of the generator.

Debugging States (gen_debug Directory)

The following states are available under the gen_debug directory for debugging and diagnostic purposes:

State Name	Description
sstate	Current state of the starting sequence: 0: Initialization or running 1: Pullback 2: Starting 3: Pause after unsuccessful start 4: Completed cycle (transition state).
stim	Duration timer (ms) for pullback and pause operations.
loaded	Timer (ms) tracking engine load duration.
started	Engine start indicator: Positive value indicates the engine has started.
toohigh	Overvoltage condition timer (ms).
armed	Generator armed indicator: 0: Not armed 1: Armed.
trial	Current number of engine start trials.