Instruction/ maintenance manual of the product DRV8811EVM Texas Instruments
Go to page of 13
DRV8811EVM User's Guide Literature Number: SLVA344A July 2009 – Revised September 2009.
2 SLVA344A – July 2009 – Revised September 2009 Submit Documentation Feedback.
Contents 1 Introduction ......................................................................................................................... 6 1.1 Block Diagram .....................................................................................
www.ti.com List of Figures 1 VREF SELECT Jumper ..................................................................................................... 7 2 DECAY SELECT Jumper .............................................................................
User's Guide SLVA344A – July 2009 – Revised September 2009 Laser and Motor Drives This document is provided as a supplement to the DRV8811 datasheet.
1 Introduction 1.1 Block Diagram V M P ow er T est S ta ke s D R V 88 1 1 M ot o r Ou tp ut s M S P 4 3 0 F 1 61 2 U S B 1.2 Power Connectors Introduction www.ti.com The DRV8811_RD customer EVM is the complete solution to evaluating the DRV8811 microstepping bipolar stepper driver.
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 been brought out to a test stake.
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 this folder to be copied to any desired folder on the computer.
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.
3.3 Updating DAC Output for Current Control (VREF/DECAY) VREF=DAC_V ALUE · 2.5 V ¾ 4095 (1) 3.4 Updating DAC Output for Decay Control (DECAY) DECA Y=DAC_V ALUE · 2.5 V ¾ 4095 (2) 3.5 Operating the Stepper Motor 3.5.1 Turning the Stepper Motor Windows Application www.
T i m e B a s e Acc el Ra t e P u l s e s P er S e c o n d www.ti.com Windows Application The DRV8811_RD customer EVM allows for the possibility of coordinating step rates such that accelerating and decelerating profiles are achieved. Both acceleration and deceleration are controlled by the same parameters, acceleration rate and time base.
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 by the decimal number at the PPS text box. Once the Start Steps button is pressed it becomes the Stepping button.
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.
An important point after buying a device Texas Instruments DRV8811EVM (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Texas Instruments DRV8811EVM yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Texas Instruments DRV8811EVM - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Texas Instruments DRV8811EVM you will learn all the available features of the product, as well as information on its operation. The information that you get Texas Instruments DRV8811EVM will certainly help you make a decision on the purchase.
If you already are a holder of Texas Instruments DRV8811EVM, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Texas Instruments DRV8811EVM.
However, one of the most important roles played by the user manual is to help in solving problems with Texas Instruments DRV8811EVM. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Texas Instruments DRV8811EVM along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
