ZHCSPQ3A december 2022 – april 2023 MCF8315A
PRODUCTION DATA
MCF8315A provides the option of tuning the open to closed loop handoff threshold, open loop acceleration (and deceleration) rates and open loop current limit in reverse drive to values different to those used in forward drive operation; the reverse drive specific parameters can be used by setting REV_DRV_CONFIG to 1b. If REV_DRV_CONFIG is set to 0b, MCF8315A uses the equivalent parameters configured for forward drive operation during the reverse drive operation too.
The speed at which motor would enter the open loop in reverse direction can be configured using REV_DRV_HANDOFF_THR. For a smooth transition without jerks or loss of synchronism, user can configure an appropriate current limit when the motor is spinning in open loop during speed reversal using REV_DRV_OPEN_LOOP_CURRENT. The open loop acceleration rates for the forward direction during speed reversal are defined using REV_DRV_OPEN_LOOP_ACCEL_A1 and REV_DRV_OPEN_LOOP_ACCEL_A2. The reverse drive open loop deceleration rate, when the motor is decelerating in the opposite direction to zero speed, can be configured as a percentage of reverse drive open loop acceleration using REV_DRV_OPEN_LOOP_DEC.