SENSORLESS-BLDC-MOTOR-RD
SENSORLESS BLDC MOTOR REFERENCE DESIGN KIT USER’S GUIDE
1. Kit Contents
The Sensorless BLDC Motor Reference Design Kit contains the following items:
Sensorless BLDC Motor Reference Design Board
Brushless DC (BLDC) Motor
Universal AC to 12 V DC Power Adapter
USB Debug Adapter
2 USB Cables
Reference Design Kit Tools & Documentation CD
2. Kit Overview
This reference design demonstrates sensorless control of a BLDC motor system using the C8051F310. The
reference design provides for both stand-alone demonstration operation and a simple user interface over USB. The
reference design may also be used as a platform for Sensorless BLDC motor code development.
This User's Guide provides a step-by-step guide for getting your system up and running. Refer to the Application
Note “AN208: Sensorless BLDC Reference Design“ for complete documentation of the Sensorless BLDC
Reference Design.
Figure 1. Sensorless BLDC Reference Design Board
Rev. 0.3 12/07 Copyright © 2007 by Silicon Laboratories SENSORLESS-BLDC-MOTOR-RD
SENSORLESS-BLDC-MOTOR-RD
Sensorless
BLDC
Motor
A
B
C
RESET
DEBUG
STOP
START
Sensorless
BLDC Motor
Drive
SPEED
USB
AC Adapter
3. Sensorless Motor Reference Design Demonstration
The Sensorless BLDC Motor Reference Design includes everything you need to set up a Sensorless BLDC motor
demonstration. Connect the BLDC motor to the Sensorless BLDC motor control board following the wirin g chart for
the Anaheim Automation BLY171S-24V-4000 motor as shown in Table 1.
Table 1. BLDC Motor Wiring Diagram
Color Location
Yellow A
Red B
Black C
Connect the 12 V universal ac/dc power adapter to the dc supply (P1) on the Sensorless BLDC Motor Reference
Design Board. Rotate the SPEED knob fully clockwise. Press the START button on the Sensorless BLDC Motor
Reference Design Board. The motor will start running. Notice that the motor will first align and then smoothly speed
up to the minimum closed loop running speed. Rotate the knob counter clockwise to adjust the spee d of the motor.
Press the STOP button and the motor will stop spinning.
Figure 2. Sensorless BLDC Motor Reference Design Demonstration Setup
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SENSORLESS-BLDC-MOTOR-RD
4. Reference Design CD Installation
The included CD-ROM contains the Silicon Laboratories Sensorless BLDC Motor Reference Design software and
additional documentation.
Figure 3. Install Development Tools
The following steps detail the software installation process.
1. Place the Reference Design Kit CD-ROM into the PC.
2. An installation dialogue box will appear. Click the “Inst all Reference Design Kit Tools” button.
3. The Kit Selection window will open showing the available Reference Design Kits. To install the application,
select the "Sensorless BLDC Motor Reference Design Kit" option. Click the "Install" button.
4. The "Confirm Installations" window will open, showing the available installation options. Only the "Sensorless
BLDC Reference Design Kit" and "Install CP210x Drivers" needs to be selected to run the demo.
5. Follow the installation prompts to install the demo application. By default, the software will be installed in the
C:\SiLabs\MCU\SBLDC_Motor_RD directory.
6. Next, the CP210x Driver "unpacker" utility will run. Follow the steps to copy the driver files to the desired
location. The default directory is C:\SiLabs\MCU\CP210x.
7. The final window will give an option to install the driver on the target system. Select the “Launch the CP210x
VCP Driver Installer” option if you are ready to install the driver.
8. If selected, the driver installer will launch, providing an option to specify the driver installation location. After
pressing the “Install” button, the installer will search your system for copies of previously installed CP210x
Virtual COM Port drivers. It will let you know when your system is up to date. The driver files included in this
installation have been certified by Microsoft.
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SENSORLESS-BLDC-MOTOR-RD
9. If the “Launch the CP210x VCP Driver Installer” option was not selected in step 7, the installer can be found in
the location specified in step 6, by default C:\SiLabs\MCU\CP210x\Windows_2K_XP_S2K3_Vista. At this
location, run CP210xVCPInstaller.exe.
10.To com plete the installation process, connect the included USB cable between the host computer and the USB
connector on the SBLDC Motor. Windows will automatically finish the driver installation. Information windows
will pop up from the taskbar to show the installation progress.
1 1.If needed, the driver files can be uninstalled by selecting the “Silicon Laboratories CP210x USB to UART Bridge
(Driver Removal)” option in the “Add or Remove Programs” window.
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