Safiery CANbus Alternator Controller

$SCT: - Changes TACHOMETER parameters Update calibration ratios and parameters associated with alternator driven tachometers. It should be noted the regulator will function correctly without changing any of these parameters; you need only change them if you wish to estimate the RPMs of your engine to be reported by the WS500 Alternator Regulator.

$SCT: <Alt Poles>, < Eng/Alt drive ratio >, <Tach Min Field>, <ForceTM>, <Trigger Half-Power RPM>

Alt Poles:

<WHOLE NUMBER ( 2  25 )> Number of poles in the alternator.

Eng/Alt Drive Ratio: <FLOATING POINT NUMBER ( 0. 5  50 )> Enter the ratio your engine drive pulley diameter vs. the alternator drive diameter. Example, if your engine has a 7” drive pulley, and the Alternator has a 2.6” drive pulley, then enter: 2.6923 ( 7.0 / 2.3 ) <WHOLE NUMBER ( -1  30 )> This is the % value the PWM will be kept at as the minimum drive when ForceTM (Below) has been enabled. BE VERY CAREFUL with this value as it will set the floor in which the alternator is driven. If that floor is too high, it will prevent the regulator from ‘regulating’, burning out the battery. This is the actual PWM value sent to the field drive; though it is capped at 30%. Tach Min Field:

Set Tach Min Field = -1 to enable auto-determination. (Disabled, installer must set value manually. -1 will be treated as Disabled (0).

If a Tach Min Field value is set (any value greater then 0), and TACH-MODE is enabled, the regulator will use this value as a minimal field drive %. Even during the warm-up period. You may have to experiment with this value to get one which matches your system, taking care not to make it too great, as that could cause issues with overcharging of your battery. If a fixed Tach Min Field value is set, the regulator will also hold in the warmup / idle phase until it is able to stably see RPMs, indicating the engine is running. This will prevent the field from being driven any harder in the case of the regulator is powered on via ENABLED, but the actual engine is not running. Do take note though: if the stator wire is not connected (or has failed), and/or the Tach Min Field % drive value is too low, the regulator will remain in warm- up mode, ‘appearing’ to have failed when in fact it was been instructed to wait until it can see a stator signal…

Set = 0 (default) to not inject any artificial PWM % min value.

And a special note on Li based installs be very careful with Tach Min Field as incorrect setting will prevent the regulator from fully stopping charging when the battery has reached it target SOC.