Texas Instruments DRV8811EVM - Manuals

Page 3 - Contents; Introduction

Contents 1 Introduction ......................................................................................................................... 6 1.1 Block Diagram ............................................................................................................. 6 1.2 Power Connectors ....

Page 6 - Block Diagram; V M P ow er; Power Connectors

1 Introduction 1.1 Block Diagram V M P ow er Test Stake s D R V8811 M o to r O u tp u ts MSP 4 30F1612 U S B 1.2 Power Connectors Introduction www.ti.com The DRV8811_RD customer EVM is the complete solution to evaluating the DRV8811 microsteppingbipolar stepper driver. It houses a USB link to provid...

Page 7 - Installing the FTDI USB Driver; Installing Drivers And Software; Figure 1. VREF SELECT Jumper; Figure 1; Figure 2. DECAY SELECT Jumper; Figure 2

1.3 Test Stakes 1.4 Jumpers 1.4.1 VREF SELECT (JP1) Jumper (a) (b) PO T INT PO T INT 1.4.2 DECAY SELECT (JP6) Jumper (a) (b) PO T INT PO T INT 1.5 Motor Outputs 2 Installing Drivers And Software 2.1 Installing the FTDI USB Driver www.ti.com Installing Drivers And Software Every pin on the device has...

Page 8 - Running the Windows Application Software; Windows Application; Figure 3

2.2 Installing the DRV8811 Evaluation Board Windows Application Software 2.3 Running the Windows Application Software 3 Windows Application Windows Application www.ti.com The included CD contains a folder titled “Windows Application”. It is recommended for the contents of thisfolder to be copied to ...

Page 9 - File; Exit - Terminates the application; Settings; After opening the application, the order of events should be:; Figure 4. Acknowledgement Text Box; The application is ready for use.; Figure 5. Signals Frame

3.1 Menu 3.2 DRV8811 GPIO Control Signals www.ti.com Windows Application The menu at the top of the application offers a series of quick options for how the COM port is to behave. 1. File → Exit - Terminates the application 2. Settings → Port - Selects from COM1 to COM4. Default is COM4. The serial ...

Page 10 - Turning the Stepper Motor; Figure 6. Curent Control Frame; Equation 1; Figure 7. Current Control Frame; Equation 2

3.3 Updating DAC Output for Current Control (VREF/DECAY) VREF = DAC_VALUE · 2.5 V ¾ 4095 (1) 3.4 Updating DAC Output for Decay Control (DECAY) DECAY = DAC_VALUE · 2.5 V ¾ 4095 (2) 3.5 Operating the Stepper Motor 3.5.1 Turning the Stepper Motor Windows Application www.ti.com A checked checkbox transl...

Page 11 - Figure 9; Figure 9. Speed Control Frame

Tim e B ase A c c e l R a te P ulses P er S ec ond www.ti.com Windows Application The DRV8811_RD customer EVM allows for the possibility of coordinating step rates such thataccelerating and decelerating profiles are achieved. Both acceleration and deceleration are controlled bythe same parameters, a...

Page 12 - Step by Step control; Schematic; Figure 10. Step Control Frame

3.5.2 Step by Step control 4 Schematic Schematic www.ti.com Pressing the Start Steps button, will start the timer and pulses will be generated at the rate specified bythe decimal number at the PPS text box. Once the Start Steps button is pressed it becomes the Steppingbutton. Press the Stepping butt...

Page 13 - IMPORTANT NOTICE

IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,and other changes to its products and services at any time and to discontinue any product or service without notice. Customers shouldobtain the l...