JAJSST7A January 2024 – May 2024 MCF8315C-Q1
PRODUCTION DATA
Align is enabled by configuring MTR_STARTUP to 00b. The MCF8315C-Q1 aligns the motor by injecting a DC current through a particular phase pattern for a certain time configured by ALIGN_TIME. The phase pattern during align is generated based on ALIGN_ANGLE. In the MCF8315C-Q1, the current limit during align is configured through ALIGN_OR_SLOW_CURRENT LIMIT.
A fast change in the phase current may result in a sudden change in the driving torque and this could result in acoustic noise. To avoid this, the MCF8315C-Q1 ramps up the current from 0 to the current limit at a configurable ramp rate set by ALIGN_SLOW_RAMP_RATE. At the end of align routine, the motor will be aligned at the known position.