This BRCA standard allows all speed control manufacturers to develop and market a speed controller that limits the maximum rotational speed of a brushless motor, irrespective of the motor make or specification. The intent of this standard is to limit motor rotational speed with a zero tolerance on the upper limit. In this standard, if it doesn’t say you can do it, you can’t. We expect to work with manufacturers to update and improve this standard, to make provision for new technology and designs, and so we encourage you to contact us at Contact Form.
The ability to control the maximum rotational speed of the motor is known as a rev-limiting speed controller (ESC). The ESC will not command, or allow, the motor to increase its rotational speed above a pre-set limit. At all times the speed controller will also comply with the “Zero Timing”, or ‘Blinky’ timing requirements.
The ‘Blinky” profile will ensure that the motor phase drive outputs (A,B,C) change state within 10uS of the relevant motor sensor signals changing. When in this profile, there is no alteration to the fixed mechanical timing of the motor. When the "Blinky" profile is activated, it will be identified by a blinking LED or LEDs while the ESC is armed and in neutral position. Functions that increase the timing such as “Boost” and “Turbo”, or reduce the timing such as “Softening” are not compliant with “Blinky” profile and must not be used. The ESC must not continue to indicate ‘blinky’ mode when any of these functions (or similar) are enabled.
