Stepper Motor Driver Ic L297 Schematic
In above two bipolar stepper driver circuits, there is not anything to adjust critically. I want to make me free from critical settings. I want to drive my stepper motor (bigger one = 4kg) at 35-40v. Please give your expert comments about above two simple drivers. I think, my two L297 chips in two circuits have burnt out.
Stepper Motor Driver Ic
Description
The L297 Stepper Motor Controller IC generates four phase drive signals for two phase bipolar and four phase unipolar step motors in microcomputer-controlled applications. The motor can be driven in half step, normal and wawe drive modes and on-chip PWM chopper circuits permit switch-mode control of the current in the windings.
Key Features
- RESET INPUT & HOME OUTPUT
- FEW EXTERNAL COMPONENTS
- NORMAL/WAVE DRIVE
- CLOCKWISE/ANTICLOCKWISE DIRECTION
- HALF/FULL STEP MODES
- PROGRAMMABLE LOAD CURRENT
- ENABLE INPUT
- SWITCHMODE LOAD CURRENT REGULATION
Description.
Here is the circuit diagram of a simple stepper motor controller using only elementary parts. The driver circuit uses, four transistor (SL100) to drive the motor windings, two NOT gates and one XOR gate to decode the two bit control logic to drive the four windings of the motor. The diodes D1 to D4 protects the corresponding transistors from transients generated during the switching of motor windings. d0 and d1 are the control logics which determines the direction of rotation as well as speed.
Ebooks, Textbooks, Courses, Books Simplified as questions and answers by Rico Publications. They work with your textbook or without a textbook and can help you to review and learn essential terms, people, places, events, and key concepts. Earth system history stanley pdf. Author by: David MasonLanguage: enPublisher by: Rico PublicationsFormat Available: PDF, ePub, MobiTotal Read: 47Total Download: 829File Size: 40,8 MbDescription: 5,600 Exam Prep questions and answers.
Circuit diagram with Parts list.
Stepper Motor Controller Ic
Notes.
- The control logic for the circuit can be obtained from a 2 bit up/down counter clocked by a 555 astable multivibrator.The direction of count determines the direction of rotation and the frequency of astable multivibrator determines the speed of rotation.
- As shown in the schematic above, IC1a IC1b belongs to same IC 7404.
- Pin 14 and pin 7 of both IC1 and IC2 must be connected to +5 V and ground respectively, though it is not shown in circuit diagram.
- The 5V can be obtained from a 7805 based power supply circuit.
- Vcc is the voltage required for the stepper motor. It varies from motor to motor. Here we can use up to 24V stepper motors. For higher operating voltages and power the SL100 transistors must be replaced with higher power transistors like 2N3055.
Truth table for clockwise rotation.