MD30C 30A DC Motor Driver User`s Manual June 2014

MD30C 30A DC Motor Driver User`s Manual June 2014
 ​
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Product User’s Manual – ​
MD30C MD30C 30A DC Motor Driver User's Manual V1.2 June 2014 Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 1 ​
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MD30C Index 1.
Introduction
3 2.
Packing List
4 3.
Product Specification and Limitations
5 4.
Board Layout
6 5.
Dimension
8
6.
Hardware Installation
9 7.
Warranty
16
Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 2 ​
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MD30C 1.0 INTRODUCTION MD30C is the successor of MD30B which is designed to drive medium to high power brushed DC motor with current capacity up to 80A peak and 30A continuously. Fully NMOS design not only provides faster switching time, it is also more efficient and no heatsink or fan is required. Besides that, MD30C also incorporates some user friendly features such as reverse polarity protection and onboard PWM generator which allows it to operate without a host controller. The motor can simply be controlled with the onboard switches and speed potentiometer. External switches and potentiometer can also be used. Features: ● Bi­directional control for 1 brushed DC motor. ● Motor Voltage: 5V ­ 25V. ● Maximum Current: 80A peak (1 second), 30A continuously. ● Reverse polarity protection. ● 3.3V and 5V logic level input. ● Fully NMOS H­Bridge for better efficiency and no heat sink is required. ● Speed control PWM frequency up to 20KHz (Actual output frequency is same as input frequency when external PWM is selected). ● Onboard PWM generator with switches and potentiometer for standalone operation. ● Support both locked­antiphase and sign­magnitude for external PWM operation. ​
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MD30C 2.0 PACKING LIST Please check the parts and components according to the packing lists. If there are any parts missing, please contact us at ​
[email protected]​
immediately. 1.
2.
3.
4.
1 x ​
MD30C​
30A DC Motor Driver 2 x ​
Mini Jumper 1 x ​
2510 PCB Connector​
­ 3 Ways (Female) 3 x ​
2510 Terminal Pin ​
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MD30C 3.0 PRODUCT SPECIFICATION AND LIMITATIONS Absolute Maximum Rating Parameter Min Typical Max Unit Power Input Voltage (Motor supply voltage) 5 ­ 25 V I​
MAX ​
(Maximum Continuous Motor Current) ­ ­ 30 A I​
PEAK ​
(Peak Motor Current)* ­ ­ 80 A I​
IDLE ​
(Idle Current) ­ ­ 100 mA V​
IOH​
(Logic Input­High Level) 3 ­ 5.5 V V​
IOL​
(Logic Input ­ Low Level) 0 ­ 0.5 V Maximum PWM Frequency** ­ ­ 20 KHz *Must not exceed 1 second. **Actual output frequency is same as input frequency when external PWM is selected. ​
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MD30C 4.0 BOARD LAYOUT 1. Power Terminal Block Connect to power source. For high current application, please solder the wire directly to the pad at bottom layer. 2. Input Pin No. Pin Name Description 1 GND Ground 2 PWM PWM input for speed control. 3 DIR Direction Input. 3. PWM Source Selector Select the source of the speed control PWM. PWM Source JP4 JP6 Internal Potentiometer INT POT INT PWM External Potentiometer EXT POT INT PWM External PWM Signal X (Don’t Care) EXT PWM 4. ​
Internal PWM Potentiometer Used to control the motor speed when PWM source is internal potentiometer. ​
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MD30C 5. External PWM Potentiometer Port Connect to the external potentiometer (5K ­ 10K Ohm). Used to control the motor speed when PWM source is external potentiometer. 6. Test Button A When this button is pressed, current flows from output A to B and motor will turn CW (or CCW depending on the connection). External switch can also be connected for the ease of access. 7. Test Button B When this button is pressed, current flows from output B to A and motor will turn CCW (or CW depending on the connection). External switch can also be connected for the ease of access. 8. Motor Terminal Block Connect to motor. For high current application, please solder the wire directly to the pad at bottom layer. 9. Red LED A. Turns ON when the output B is low and output A is high. Indicates the current flows from output A to B. 10. Red LED B Turns ON when the output A is low and output B is high. Indicates the current flows from output B to A. 11. Green Power LED Turn on when the MD30C is powered up. ​
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MD30C 5.0 DIMENSION Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 8 ​
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MD30C 6.0 HARDWARE INSTALLATION AND GETTING STARTED 6.1 Battery and Motor Connection Battery and motor can be connected to the ​
MD30C either via the screw terminal block, or it can be soldered directly to the pad at the bottom layer of the PCB. Make sure the battery and motor are connected to the correct port. Connecting battery to the motor port will burn the MOSFET. NOTE: For application where the current is > 20A, it’s recommended to solder the wire directly to the pad at bottom layer. Battery is connected to MD30C via terminal block Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 9 ​
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MD30C Motor is connected to MD30C via terminal block Battery is soldered directly to MD30C Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 10 ​
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MD30C Motor is soldered directly to MD30C Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 11 ​
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MD30C 6.2 Standalone Operation The ​
MD30C can operate in standalone mode. In this mode, the motor is controlled by the onboard switches and speed potentiometer. Alternatively, external switches and potentiometer can be used to control the motor. This allow the switches and potentiometer to be mounted at easy to reach place. Onboard Switches and Potentiometer Set the jumpers as below: JP4 :​
INT POT JP6 :​
INT PWM After that, connect the battery and motor to the MD30C. Pressing switch A will run the motor in CW direction and pressing switch B will run the motor in CCW direction (The actual direction is depending on the motor polarity). The speed of the motor can be controlled by the onboard speed potentiometer. Don’t worry if the motor does not run when the switch is pressed. This might be due to the set speed is too low for the motor to run. Try turning the speed potentiometer CW for a few round while pressing down one of the switch to increase the motor speed. Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 12 ​
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MD30C External Switches and Potentiometer Set the jumpers as below: JP4 :​
EXT POT JP6 :​
INT PWM Connect the external switches and potentiometer as below. Please note that the onboard potentiometer will have no effect when JP4 is changed to EXT POT. Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 13 ​
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MD30C External potentiometer is connected on JP5 External switch is connected to JP7 and JP8 Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 14 ​
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MD30C 6.3 Interface with Microcontroller To control the motor with a microcontroller, set the jumpers as below: JP4 :​
Don’t Care JP6 :​
EXT PWM Truth table for the control logic: PWM DIR Output A Output B Low X (Don’t Care) Low Low High Low High Low High High Low High Picture below shows an example of connecting the ​
MD30C​
to the ​
SK40C​
. Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 15 ​
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MD30C 7.0 WARRANTY ● Product warranty is valid for 6 months. ● Warranty only applies to manufacturing defect. ● Damaged caused by misuse is not covered under warranty ● Warranty does not cover freight cost for both ways. Prepared by Cytron Technologies Sdn. Bhd. 19, Jalan Kebudayaan 1A, Taman Universiti, 81300 Skudai, Johor, Malaysia. Tel: +607­521 3178 Fax: +607­521 1861 URL: www.cytron.com.my Email: ​
[email protected] [email protected] Created by Cytron Technologies Sdn. Bhd. – All Right Reserved 16 
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