SLLA663 March   2025 MCF8315A , MCF8315C , MCF8315C-Q1 , MCF8315D , MCF8316A , MCF8316C-Q1 , MCF8316D , MCF8329A , MCT8315A , MCT8316A , MCT8329A

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2End Application Configuration Recommendation
    1. 2.1 Resynchronization
    2. 2.2 Reverse Drive
    3. 2.3 Coasting (Hi-Z)
    4. 2.4 Startup Brake
    5. 2.5 Direction Change Mode
  6. 3Tuning Guidance
    1. 3.1 Initial Speed Detection Module
      1. 3.1.1 Initial Speed Detection
      2. 3.1.2 ISD Times
      3. 3.1.3 Stationary Detect Threshold
    2. 3.2 Resynchronization
      1. 3.2.1 Forward Drive Resync Threshold
      2. 3.2.2 Reverse Drive
      3. 3.2.3 Reverse Acceleration Parameters
      4. 3.2.4 Reverse Drive Current Limits
      5. 3.2.5 Reverse Drive Handoff Threshold
      6. 3.2.6 Reverse Drive Open Loop Deceleration (REV_DRV_OPEN_LOOP _DEC)
    3. 3.3 Coasting (Hi-Z)
    4. 3.4 Brake
      1. 3.4.1 Brake Config (BRK_CONFIG)
  7. 4Feature Availability of MCx Devices
    1. 4.1 FOC Family (MCF83xx devices)
    2. 4.2 TRAP Family (MCT83xx devices)
  8. 5Summary
  9. 6References

2 End Application Configuration Recommendation

Different end applications have a different set of requirements in the pre-startup stage that are critical depending on motor inertia, external factors like wind, for example. There is importance in understanding the functionality of the pre-start-up features and configure appropriately for a given end application. Table 2-1 summarizes the pre-startup configuration recommendation for common end applications.

Table 2-1 End Application Pre-startup Recommendation
Application Resync Reverse Drive Hi-z Startup Brake Direction Change Mode Comments
Ceiling Fans Yes No Yes Yes 0b High inertia
Pedestal Fans Yes Yes No Yes 0b High inertia
Server/Seat Cooling fan Yes No Yes Yes 0b Medium inertia
Pumps/ Fuel pumps No No No Yes 0b Low inertia
Vaccum cleaner Yes Yes No Yes 1b High inertia
CPAP Yes Yes No Yes 1b High inertia
Air Purifiers Yes No No Yes 0b Medium to high inertia
Massager No No No Yes 1b Low inertia
Brush Bar No No No Yes 0b Geared systems
Washer Dryer pumps No No No Yes 0b Low to Medium inertia