Limiters

Limiter response time

Limiter response time can be adjusted using the gain parameters. But in general, the response time is around 10ms.

Static variables

limit

is located in /driver/limit folder.

It is bitwise number. Each bit represent active limiter.
This will not tell you how much output power is limited. For that check value of /driver/total_limit

Bit	Name	Description
0	DRIVER_LIMIT_IBPOS	Battery positive current higher than ibpos
1	DRIVER_LIMIT_IBNEG	Battery negative current higher than ibneg
2	DRIVER_LIMIT_UBMIN	Battery voltage lower than ubmin
3	DRIVER_LIMIT_UBMAX	Battery voltage higher than ubmax
4	DRIVER_LIMIT_PPOS	Positive power higher than ppos
5	DRIVER_LIMIT_PNEG	Negative power higher than pneg
6	DRIVER_LIMIT_RPOS	Positive RPM higher than rpos ? rdec/2
7	DRIVER_LIMIT_RNEG	Negative RPM higher than rneg ? rdec/2
8	DRIVER_LIMIT_MOTORTEMP	Measured motor temperature higher than motortemplo
9	DRIVER_LIMIT_MRES	Motor temperature (estimated from winding resistance) higher than mreslo
10	DRIVER_LIMIT_BTEMP	Battery temperature higher than btempmaxlo or lower than btempminlo
11	DRIVER_LIMIT_BCELL	Cell voltage higher than bcellmax or lower than bcellmin
12	DRIVER_LIMIT_CSR	Sweep rate limiter active
13	DRIVER_LIMIT_EXT	External (application) limiter active - elimit lower than 1
14	DRIVER_LIMIT_IMULT	imult is not equal to 1
15	DRIVER_LIMIT_UMULT	umult is not equal to 1

eblimit [-]

is located in /driver/limit folder.

This is the limit value of the external limiter (from the application). This limiter scales the ibpos and ibneg limiters. If they are set to 0, this value is ignored.

elimit [-]

is located in /driver/limit folder.

This is the limit value of the external limiter (from the application).

totallimit [-]

is located in /driver folder.

Total actual limitation of the Q-axis current. 1 = no limitation. (Driver have 100% of its current)
0 = full limitation. (Driver have 0% of its current)