SmartElex 15D User manual

SmartElex 15D Dual Channel DC
Motor Driver
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SmartElex 15D Smart Motor
Driver

SmartElex 15D Dual Channel DC
Motor Driver
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INDEX
1) Introduction
2) Features
3) Overview
4) Specifications
5) Dimensions
6) Connections/Wiring
7) Control Mode
10) Warranty

SmartElex 15D Dual Channel DC
Motor Driver
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Introduction:
SmartElex 15D is a dual channel motor driver capable of supplying 15
amps continuous with peak currents up to 30 amps (10Sec) per channel. It
can be operated from radio control, analog, TTL serial and PWM. A variety
of operating modes including with mixed and independent mode in radio
control, analog and in PWM mode. Operating modes allow for operation,
such as switching between radio controls and PWM mode or switching
between any of 4 modes via 4 position DPDT mode switch. MOSFETs are
switched at 16 KHz to ensure quiet operation and no annoying whining
sound. Besides, it also equipped with a microcontroller unit to provide smart
features such as multiple input modes and current limit and thermal
protection. If temperature of board is reaches 80 degree then motor speed
becomes half and speed will be normal once temperature reaches below 70
degree. Motor driver will be shut down at 100 degree.

SmartElex 15D Dual Channel DC
Motor Driver
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Features:
Supplying 15 amps continuous with peak currents up to 30 amps (10
Sec) per channel
Support motor voltage from 7V to 28V.
On board Low Internal resistance MOSFETs are switched at 16 KHz
frequency.
Over current protection and indication.
Thermal protection.
Multiple input modes: RC, Analog, PWM, Serial Packetized.
On board push buttons for test and manual operation.

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Motor Driver
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Overview:
Power Input: Connect to a 7V-28V Battery or Power Supply.
Motor 1 and Motor 2 Terminal: Connect Motor 1 to Motor 1 Terminal. Connect
Motor 2 Motor 2 Terminal.
Mode Selection: These are used to set the operating mode and options.
Error (ERR) and Over Current (OC) LEDs: Error LED glows when Under
Voltage Lockout (Input Voltage less than 7V) .Overcurrent LEDs glows due to
current greater than 35 AMP.
RC Input: 2 channel Radio Controller receiver connected to these pins.

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Motor Driver
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Specifications:
Sr.No
Parameter
Min
Max
Unit
1
Input Voltage
7
28
V
2
Maximum Continuous Current Imax
-
15
A
3
Peak Motor Current for 10 Sec
-
35
A
4
VIOH (Logic Input –High Level)
3
5.5
V
5
VIOL (Logic Input –Low Level)
0
0.5
V
6
PWM frequency
-
16
Khz

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Motor Driver
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Dimensions:

SmartElex 15D Dual Channel DC
Motor Driver
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Connections/Wiring:
SmartElex 15D can be used with power supplies or batteries. Input power is connected to
the center power terminals labeled VIN and GND. The input voltage range is 7V to 28V. The
input current is dependent on the motors being used and the load placed upon them.
As a general rule of thumb, you should use the thickest wire that is practical to make power
connections, especially on the battery leads. Using undersized wire will lead to the wire
getting hot, and can lead to elevated temperatures on the SmartElex 30D as well.
The main power connections to the SmartElex 15D are on the rear edge of the board.
Connections are made to large black screw terminals. These terminals will accept 10 to 28
gauge wire. Using stranded wire it is possible to run twinned 10 gauge wire connections to
the battery terminals. This is often a good idea if your design will be running both motors
near or above the 15 amp continuous limit. For the motor connections, single 12 gauge wires
should be sufficient for all applications.

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Motor Driver
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Control Mode:
SmartElex 15D supports four different types of input mode:
1. Radio Control (RC)
2. Microcontroller PWM.
3. Analog
4. Serial Packetized.
The DIP switch settings for each mode and the function for input pin are
summarized on the table below.

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Motor Driver
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1. Radio Control (RC) Mode:
In this mode, Speed and direction of Motor is controlled by RC1 and RC2
channel of receiver or anything that can generate servo signals can be used to
drive a SmartElex 30D in Radio Control mode.
SW3,SW4
Mode
0 0
RC
SW1,SW2
0 0
Independent Linear Mode
RC1 control Speed(Linear) and Direction of Motor 1
RC2 control Speed(Linear) and Direction of Motor 2
0 1
Independent Exponential Mode
RC1 control Speed(Exponential) and Direction of
Motor 1
RC2 control Speed (Exponential) and Direction of
Motor 2
1 0
Mixed Linear Mode
RC1 control Speed (Linear) in Forward and Reverse
Direction of Motor1 and Motor 2 Simultaneously.
RC2 control Speed (Linear) in Left and Right Direction
of Motor 1 and Motor 2 Simultaneously.
1 1
Mixed Exponential Mode
RC1 control Speed (Exponential) in Forward and
Reverse Direction of Motor 1 and Motor 2
Simultaneously.
RC2 control Speed (Exponential) in Left and Right
Direction of Motor 1 and Motor 2 Simultaneously.

SmartElex 15D Dual Channel DC
Motor Driver
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Sample Connection Diagram of RC receiver and motor with SmartElex
15D.

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Motor Driver
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2. PWM Mode:
I. Mixed PWM Mode:
PWM Pin
Input PWM Range
Speed/Acceleration
of Motor
Direction of motor
Motor 1
Direction
Motor2
Direction
Bot
Direction
PWM2(S2)
5% to 40%
100% to 0%
Counterclockwise
Counterclockwise
Reverse
PWM2(S2)
57% to 92%
0% to 100%
clockwise
clockwise
Forward
PWM1(S1)
5% to 40%
100% to 0%
Counterclockwise
clockwise
Left
PWM1(S1)
57% to 92%
0% to 100%
clockwise
Counterclockwise
Right
If PWM is less than 5% Speed of motor is 100%
If PWM is greater than 92% speed of motor is 0%

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Motor Driver
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II. Independent PWM Mode:
PWM Pin
Direction Pin
Input PWM
Range
Speed/Acceleration
of Motor
Direction of motor
DIR1
DIR2
Motor 1
Direction
Motor2
Direction
PWM1(S1)
HIGH
x
8% to 94%
8% to 100%
clockwise
x
PWM1(S1)
LOW
x
8% to 94%
8% to 100%
counterclockwise
x
PWM2(S2)
x
HIGH
8% to 94%
8% to 100%
x
clockwise
PWM2(S2)
x
LOW
8% to 94%
8% to 100%
x
counterclockwise
If PWM is less than 8% Speed of motor is 0%
If PWM is greater than 94% speed of motor is 100%

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Motor Driver
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3. Analog Mode:
In Analog input mode, the speed and direction of the motor is controlled by the
analog voltage. Analog Input voltage range is from 0V to 5V.
I. Independent Analog Mode:
II. Mixed Analog Mode:
Analog
Pin
Input range
Speed of
Motor
Direction Of Motor
Motor 1
Direction
Motor 2
Direction
ANG1(S1)
2.2V to 0.25
10% to 100%
Counterclockwise
x
2.21V to 2.79V
0%(dead band)
Stopped
x
2.8V to 4.8V
10% to 100%
clockwise
x
ANG2(S2)
2.2V to 0.25
10% to 100%
x
Counterclockwise
2.21V to 2.79V
0%(dead band)
x
Stopped
2.8V to 4.8V
10% to 100%
x
clockwise
Note: If Analog voltage is less than 0.25V and greater than 4.8V then Motor speed is
100%
Analog
Pin
Input range
Speed of
Motor
Direction Of Motor
Motor 1
Direction
Motor 2
Direction
Bot
Direction
ANG1(S1)
2.2V to 0.25
10% to 100%
Counterclockwise
Counterclockwise
Reverse
2.21V to 2.79V
0%(dead band)
Stopped
Stopped
Stopped
2.8V to 4.8V
10% to 100%
clockwise
clockwise
Forward
ANG2(S2)
2.2V to 0.25
10% to 100%
Counterclockwise
clockwise
Left
2.21V to 2.79V
0%(dead band)
Stopped
Stopped
Stopped
2.8V to 4.8V
10% to 100%
clockwise
Counterclockwise
Right
Note: If Analog voltage is less than 0.25V and greater than 4.8V then Motor speed is 100%

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Motor Driver
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4. Serial Mode:
In Serial mode, Tx pin of SmartElex 30D is connected to Rx pin of Controller and Rx pin is connected
to Tx pin of Controller. Baud rate can be simply set by using switches. Supported baud rates are
9600,19200,38400,57600.

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Motor Driver
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WARRANTY
Standard warranty of product is 6 months.
No warranty will apply if the Product has been subject to misuse, static
discharge, neglect, accident, modification, or has been soldered or altered
in any way.
Warranty only applies to manufacturing defect.