3.22EjemploDRM007 Co..

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Introduction and Setup The Hall sensor signals are scanned independently of the speed controller. Each new incoming edge of any Hall sensor signal calls an interrupt routine, which calculates a new voltage shape, applied to the BLDC motor. This process is called commutation. The PWM transistors work in complementary mode, when the upper transistor is on, the lower transistor is off and vice versa. 1.8 Warnings This reference board operates in an environment that includes dangerous voltages and rotating machinery. Due to the high-voltage power stage operating directly from an ac line, oscilloscope grounds and power stage grounds are at different potentials, unless the oscilloscope is floating. Note that probe grounds and, therefore, the case of a floated oscilloscope, are subjected to dangerous voltages. • Before moving scope probes, making connections, etc., you must turn off the main switch. • Operation in lab setups that have grounded tables and/or chairs should be avoided. • Wearing safety glasses, avoiding ties and jewelry, using shields, and operation by personnel trained in high-voltage lab techniques are advisable. • Never turn on the board in running mode if it is not known if the code is downloaded. • To reduce the cost of the board, optoisolation circuitry was not included: the microcontroller’s ground is tied to a power stage ground. For this reason, special care must be taken when handling the board. Touching its components when it is turned on must be avoided. DRM007 BLDC Motor Control Board for Industrial and Appliance Applications 32 Introduction and Setup MOTOROLA
Introduction and Setup Setup Guide 1.9 Setup Guide This board operates in two different modes: programming mode and running mode. Programming mode allows downloading code to the microcontroller. In running mode the microcontroller executes the downloaded code. Out of the box conditions suppose the board is programmed with “BLDC CODE V1.s19”. Default position of Jumper JP1 is between 2 and 3 pins. The board contains its own dc power supply for the power stage, besides a 15 Vdc regulated power supply and a 5 Vdc regulated power supply. The 15 Vdc and the 5 Vdc power supplies can be sourced by the dc power supply for power stage or by and external source of 18 Vdc at 200 mA. Input for this external source is the connector labeled J6. Selecting internal or external sourcing of 15 Vdc and 5 Vdc regulated power supplies, is done by means of switch S5. Then, if the user wants to use an external power supply, connect its terminals to connector J6 and slide the switch S5 to the position labeled “EXT”. 1.9.1 Programming Mode Setup The following procedure describes programming mode setup. Before starting you must turn off the main switch. Auxiliary external power supply usage is recommended. A PC computer is required having Metrowerks CodeWarrior Development Studio for HC08 Microcontrollers or PEMICRO PROG08SZ — FLASH programmer for M68HC908MR. The PC serial port baud rate should be set up at 9600 bps with no DTR signal. The reference board works as a Class III — direct serial to target with MON08 serial port circuitry built in. The programmers software should be configured to match this. BLDC Motor Control Board for Industrial and Appliance Applications DRM007 MOTOROLA Introduction and Setup 33
Page 1: BLDC Motor Control Board for Indust
Page 4 and 5: Revision History To provide the mos
Page 6 and 7: List of Sections DRM007 BLDC Motor
Page 8 and 9: Table of Contents Section 2. Operat
Page 10 and 11: Table of Contents 5.9.9 Signed Word
Page 12 and 13: List of Figures Figure Title Page 5
Page 14 and 15: List of Tables DRM007 BLDC Motor Co
Page 16 and 17: Introduction and Setup 1.2 Introduc
Page 18 and 19: Introduction and Setup M68HC08 CPU
Page 20 and 21: Introduction and Setup • Low-powe
Page 22 and 23: Introduction and Setup OR PRESCALER
Page 24 and 25: Introduction and Setup 1.4.3 PWM Co
Page 26 and 27: Introduction and Setup Brushless dc
Page 28 and 29: Introduction and Setup V BUS PWM1 P
Page 30 and 31: Introduction and Setup 1.6.6 Target
Page 34 and 35: Introduction and Setup To program t
Page 36 and 37: Introduction and Setup HALL EFFECT
Page 38 and 39: Operational Description 2.3 Electri
Page 40 and 41: Operational Description By pressing
Page 42 and 43: Operational Description 2.5.5 J5
Page 44 and 45: 44 Schematics and Bill of Materials
Page 50 and 51: Schematics and Bill of Materials 6
Page 52 and 53: Schematics and Bill of Materials 4
Page 54 and 55: Schematics and Bill of Materials DR
Page 56 and 57: Hardware Design Considerations 4.2
Page 62 and 63: Hardware Design Considerations VCC
Page 64 and 65: Hardware Design Considerations As a
Page 66 and 67: Hardware Design Considerations This
Page 70 and 71: Hardware Design Considerations DRM0
Page 72 and 73: Software Design Considerations 5.9.
Page 74 and 75: Software Design Considerations Clos
Page 76 and 77: Software Design Considerations The
Page 78 and 79: Software Design Considerations TIMA
Page 80 and 81: Software Design Considerations 5.5
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Software Design Considerations the
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Software Design Considerations 5.6.
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Software Design Considerations 5.8
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Software Design Considerations inte
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Software Design Considerations DRM0
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Practical Results Figure 6-2 shows
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Practical Results Taking the rectif
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Practical Results DRM007 BLDC Motor
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Source Code 7.2 Include Files 7.2.1
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Source Code #define SCS1 (*(volatil
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Source Code 7.2.2 START08.H ; /****
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Source Code #pragma DATA_SEG DEFAUL
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Source Code // Function Headers voi
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Source Code void CtrlLCD(UBYTE cont
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Source Code 7.3 Source Code Files 7
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Source Code ZeroOut: ; LDA _startup
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Source Code Loop1: finished: } } DB
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Source Code 7.3.2 MAIN.C ; /*******
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Source Code EnableInterrupts(); do
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Source Code } else { if((PORTB & OP
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Source Code #include "MR8IO.h" #inc
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Source Code #endif /* Initialize ti
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Source Code LDX #0x12 DIV LDHX #0x0
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Source Code */ SINT16 PIController
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Source Code /**********************
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Source Code { #ifdef MOS_3_COM PVAL
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Source Code #ifdef MOS_2_COM PVAL1
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Source Code PVAL3 = _newPWM; PVAL4
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Source Code TurnOffAllPWMOutputs();
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Source Code /**********************
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Source Code void MovCursorLCD(UBYTE
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Source Code /**********************
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