Microchip Technology PICDEM MC LV User Manual
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Microchip Technology PICDEM MC LV User Manual

Microchip Technology PICDEM MC LV User Manual

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Summary of Contents for Microchip Technology PICDEM MC LV

  • Page 1 Chipsmall Limited consists of a professional team with an average of over 10 year of expertise in the distribution of electronic components. Based in Hongkong, we have already established firm and mutual-benefit business relationships with customers from,Europe,America and south Asia,supplying obsolete and hard-to-find components to meet their specific needs.
  • Page 2 PICDEM ™ MC LV Development Board User’s Guide © 2006 Microchip Technology Inc. DS51554B...
  • Page 3 Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and Zena are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies.

  • Page 4: Table Of Contents

    1.1 Introduction ..................... 7 1.2 Highlights ......................7 1.3 Motor Control Kit .................... 7 1.4 Overview of the PICDEM MC LV Development Board ........7 1.5 Board Connectors ..................8 Chapter 2. System Level Architecture of the Board 2.1 Highlights ...................... 11 2.2 Board Block Diagram ...................
  • Page 5 7.1 Introduction ....................27 7.2 Highlights ...................... 27 7.3 Sensorless Control of a BLDC Motor ............27 7.4 Using the PICDEM MC LV Development Board for Higher Motor Voltage ................29 7.5 Using the PICDEM MC LV Development Board for Lower Motor Voltage ................

  • Page 6: Preface

    • Document Layout • Conventions Used in this Guide • The Microchip Web Site • Recommended Reading • Development Systems Customer Change Notification Service • Warranty Registration • Customer Support • Document Revision History © 2006 Microchip Technology Inc. DS51554B-page 1...
  • Page 7 • Chapter 6. Getting Started with dsPIC Digital Signal Controllers – Describes ® how to set up and use the PICDEM MC LV Development Board using the dsPIC family. • Chapter 7. Using dsPIC DSCs to Run a Sensorless BLDC Motor – Describes how to run a BLDC motor, without a Hall effect sensor, using dsPIC devices.
  • Page 8 { | } arguments; an OR selection 0xnnn A hexidecimal number where 0xFFF ‘n’ is a hexidecimal digit Ellipses... Replaces repeated text var_name [, var_name...] Represents code supplied by void main (void) user { ... © 2006 Microchip Technology Inc. DS51554B-page 3...
  • Page 9 RECOMMENDED READING This user’s guide describes how to use the PICDEM MC LV Development Board. The device-specific data sheets contain current information on programming the specific microcontroller or digital signal controller devices. Other useful documents are listed below.
  • Page 10 This is the definitive reference for Microchip’s 28/40/44-pin enhanced Flash micro- controllers with nanoWatt technology, high-performance PWM and A/D, that are at the heart of the PICDEM MC LV Development Board. dsPIC30F2010 Data Sheet (DS70118) This is the definitive reference for Microchip’s 28-pin, high-performance digital signal controllers.
  • Page 11 The Development Systems Information Line numbers are: 1-800-755-2345 – United States and most of Canada 1-480-792-7302 – Other International Locations DOCUMENT REVISION HISTORY Revision A (May 2005) • Initial Release of this Document. DS51554B-page 6 © 2006 Microchip Technology Inc.

  • Page 12: Chapter 1. Introduction To The Picdem Mc Lv Development Board

    Development Board INTRODUCTION The PICDEM MC LV Development Board is targeted to control Brushless DC (BLDC) motors in sensor or in sensorless operation. This flexible and low-cost board can be configured in different ways to use with Microchip’s specialized motor control micro- controllers and digital signal controllers.

  • Page 13: Board Connectors

    PICDEM™ MC LV Development Board BOARD CONNECTORS The PICDEM MC LV Development Board has a PIC18FXX31/dsPIC30F device-based control section and 3-phase power inverters. The board has a power connector (J20), motor connector (J9), ICD 2 connector (J6) and serial interface connector (J1), as shown in Figure 1-1.
  • Page 14 Introduction to the PICDEM MC LV Development Board 1.5.1 Power Connector (J20) The power connector (J20) has the facility to connect 3 different types of connectors. A barrel connector is mounted on the board when it is shipped. If necessary, the user can replace it with a standard DIN connector or a screw terminal with a 5 mm pitch.
  • Page 15 PICDEM™ MC LV Development Board NOTES: DS51554B-page 10 © 2006 Microchip Technology Inc.

  • Page 16: Chapter 2. System Level Architecture Of The Board

    • Control Section • Power Inverter Section • Power Supply BOARD BLOCK DIAGRAM Figure 2-1 gives a system level architecture of the PICDEM MC LV Development Board. The board has three sections: control, power inverter and power supply. FIGURE 2-1: BLOCK DIAGRAM...

  • Page 17: Control Section

    PWM, high-speed ADC, motion control feedback, integrated EEPROM and the power supervisory function, that are required for efficient motor control. The CD supplied along with the PICDEM MC LV Development Board has a variety of programs using both PIC18F and dsPIC30F devices, working in open loop and closed loop, using Hall sensors and in sensorless operation.

  • Page 18: Power Inverter Section

    The DC bus is either derived from the 24V power supply connected to the input connector J20, or from the ‘+’ and ‘–’ terminals on connector J9. FIGURE 2-2: HALF-BRIDGE GATE DRIVER AND INVERTER PWM1 PWM1 Driver IR2101 PWM0 PWM0 © 2006 Microchip Technology Inc. DS51554B-page 13...

  • Page 19: Power Supply

    When using a second power supply on ‘+’ and ‘–’ terminals on J9, make sure that jumper J3 is removed. Failure to do this may cause the board to fail or the power supply to fail. DS51554B-page 14 © 2006 Microchip Technology Inc.

  • Page 20: Chapter 3. Getting Started With Pic18Fxx31 Mcus

    DEVELOPMENT BOARD Chapter 3. Getting Started with PIC18FXX31 MCUs INTRODUCTION This chapter provides instructions on how to set up the PICDEM MC LV Development Board using the PIC18FXX31 devices. WARNING The PICDEM MC LV Development Board is intended to drive 3-phase BLDC motors.
  • Page 21 13. If the motor stops and LED D1 blinks, it indicates that there was an overcurrent Fault. Reduce the speed “REF” and press either S2 or S3 to clear the Fault and resume operation. DS51554B-page 16 © 2006 Microchip Technology Inc.

  • Page 22: Chapter 4. Using The Microchip Motor Control Gui

    In this version of the Motor Control GUI, all of the operations are controlled through two windows: the Main window (control panel) and the Setup window. Their operation is described in the following sections. © 2006 Microchip Technology Inc. DS51554B-page 17...

  • Page 23: The Main Window (Control Panel)

    (such as the demonstration applications included with the development kit), the scrolling display indicates the type of motor and control firmware that has been programmed to the PICDEM MC LV Development Board. • Speed/Direction Display – Displays the actual speed of the motor as determined either by sensors, or Back EMF approximation, in both tachometer and digital (text) formats.
  • Page 24 As with the speed display, the different color zones represent average safe and hazardous operating ranges based on the capabilities of the development board being used. For the PICDEM MC LV Development Board, the safe operating limit is 6A. The actual safe operating range should be determined from the motor’s name plate and data sheet.

  • Page 25: The Setup Window

    These parameters are generally self-explanatory. Information on the motor hardware itself (items 1 through 6) can be found either on the motor’s nameplate or in its data sheet. The Motor Type field is auto-populated with the motor type identified upon connection. DS51554B-page 20 © 2006 Microchip Technology Inc.
  • Page 26 Current Limit is set at the lesser of the maximum current rating for the motor or the maximum capacity of the board. For the PICDEM MC LV Development Board, this is 4.0A. Speed Limit is set at the value given in the motor’s data sheet, or at a predetermined speed set by the particular motor data file.

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