SLLU374 November   2024 MCF8329A

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Hardware Design and Setup
    1. 2.1 Board Design
      1. 2.1.1 External MOSFET Selection
      2. 2.1.2 Gate Resistor Selection
      3. 2.1.3 Bootstrap and GVDD Capacitor Selection
      4. 2.1.4 Current Shunt Resistor Selection
      5. 2.1.5 VREG MOSFET Selection
      6. 2.1.6 Additional External Power Stage Components
  6. 3Connecting to the GUI
  7. 4Spinning Into Closed Loop
    1. 4.1 Essential Configuration
      1. 4.1.1 Loading Recommended Default Values
      2. 4.1.2 Setting Base Current
      3. 4.1.3 Setting Current Limits
      4. 4.1.4 Setting Voltage Limits
      5. 4.1.5 Input the Motor's Phase Resistance and Inductance
      6. 4.1.6 Maximum Electrical Speed (Hz)
      7. 4.1.7 Run MPET to Identify Motor Parameters
        1. 4.1.7.1 Skipping MPET Measurements
    2. 4.2 Testing for Successful Startup Into Closed Loop
  8. 5Basic Controls
    1. 5.1 Speed Input Mode
    2. 5.2 Preventing Back Spin of Rotor During Startup
    3. 5.3 Faster Startup Timing
    4. 5.4 Improving Speed Regulation
    5. 5.5 Limiting and Regulating Supply Power
    6. 5.6 MTPA Tuning
    7. 5.7 Motor Studio Optimization Wizards
  9. 6Fault Handling
    1. 6.1 MPET BEMF FAULT [MPET_BEMF_FAULT]
    2. 6.2 Abnormal BEMF Fault [ABN_BEMF]
    3. 6.3 Lock Current Limit [LOCK_LIMIT]
    4. 6.4 Hardware Lock Current Limit [HW_LOCK_LIMIT]
    5. 6.5 No Motor Fault [NO_MTR]
    6. 6.6 Abnormal Speed [ABN_SPEED]

5.2 Preventing Back Spin of Rotor During Startup

Option 1: Initial Position Detection (IPD):

  1. Go to Optimal Startup in the Optimization Wizards page, select IPD, and click the Next button for instructions to set up the IPD start up method.
  2. Set the IPD Advance Angle [IPD_ADV_ANGLE] to 90⁰ to get maximum startup torque. If there is sudden jerk observed during startup, then it is recommended to reduce the angle to 60⁰ or 30⁰ for a smoother startup.
Note:

Device triggers IPD timeout fault [IPD_T1_FAULT] for motors with very high inductance, or if the motor is not connected. If this fault gets triggered, it is recommended to check if motor is connected to the device.

Device triggers IPD Frequency fault [IPD_FREQ_FAULT] if the IPD clock frequency is set too high. If this fault gets triggered, it is recommended to decrease the IPD Clock value [IPD_CLK_FREQ].

Option 2: Slow First Cycle:

  1. Go to Optimal Startup in the Optimization Wizards page, select slow first cycle, and click the Next button for instructions to set up the slow first cycle startup method.
    Optimal Startup Page Figure 5-3 Optimal Startup Page