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G2 High Power 24v13 - single channel motor controller 40V/13A - Pololu 2992
Single-channel high-performance DC motor controller. Continuous current per channel is 13 A (momentary up to 100 A), motor supply voltage from 6.5 V to 40 V, logical part voltage from 1.8 V to 5.5 V. The device also has a current flow sensor and the possibility to limit the motor current.
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Product description: G2 High Power 24v13 - single channel motor controller
The module allows to control one DC motor. The motor can be supplied with voltages from 6.5 to 40 V with continuous current up to 13 A, instantaneous (for 10 ms) up to 100 A. Speed can be controlled by PWM signal, direction by digital DIR output - giving low (logical 0) or high (logical 1) state. The device also has a current flow sensor and the possibility to limit the motor current.
The set includes a controller and connectors for self-soldering.
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G2 High Power 24v13 - single channel motor controller 40V/13A - Pololu 2992.
Connection
The motor connection and power supply are on one side of the module. The control pins (logical part from 1.8 V to 5 V) are located on the other side of the module. The motor power supply is capable of delivering high current. Gold or screw terminals (both included) can be soldered to the motor connectors.
To ensure high efficiency it is very important to connect a large capacitor between the motor power supply and ground as close to the module as possible. It is recommended to use a capacitor of at least several hundred μF. The required capacity depends on many factors, e.g. the quality and distance of the power supply (above 30 cm), motor parameters and PWM signal frequency. The capacitor can be connected to holes marked with "+" and "-". (VM and GND respectively). The controller has a built-in 100 μF capacitor sufficient for basic applications. However, for most systems a larger one is recommended.
The logical part of the module works with a voltage from 1.8 V to 5 V (maximum 5.5 V). By default, the controller is in a dormant state. To start it, the SLP pin must be connected to the high state. In typical applications, only two additional PWM and DIR pins are needed.
Queries
| PIN | Description |
|---|---|
VIN | Motor supply voltage from 6.5 V to 40 V with reverse connection protection. |
| VM | The pin gives access to the motor power supply after protection against reverse connection. It can be used to supply energy from the reverse connection to other components. It should not be used with high current. Pin used as output. |
| + i - | Pins for capacitor connection connected to VM and GND respectively. |
| 3v3 | Adjustable 3.3V output providing several milliamps to power small components. Cannot be connected to other external power lines. Off when the controller is in sleep mode. Be careful not to short-circuit the V+ pin, as this may damage the board. |
| GND | The weight of the system. |
| OUTA | Motor output pin (connected to one of the motor terminals). |
| OUTB | Output pin for the motor (connected to the second motor terminal). |
| PWM | PWM input signal for motor control. Default is low. |
| DIR | Pin direction of engine rotation. At low state, current flows from OUTA to OUTB, at high state OUTB to OUTA. Default is low state. |
| SLP | Pin setting the controller to sleep mode. The default is low (Sleep). |
| FLT | Error rate. Set to a low state when an error is detected. To be used, it must be connected to a high state (system logic voltage) |
| CS | Current sensitivity output. Generates voltage proportional to the motor current: 400 mV / A + 50 mV offset. |
| VREF | Reference voltage input. Connect the resistor to ground to limit the maximum output current. Without additional resistor the maximum value is 30 A. |
Truth table
The table shows the dependencies of the outputs on the input signals:
H - high state
L - low state
X - no matter
PWM | DIR | OUTA | OUTB | Engine condition |
|---|---|---|---|---|
H | H | H | L | The motor is clockwise at % PWM. |
H | L | L | H | The motor turns counterclockwise at % PWM. |
L | X | L | L | Braking. |
G2 High Power 24v13 - single channel motor controller 40V/13A - Pololu 2992.
The relationship between the resistor value on VREF and the current limit value.
Current measurement sensitivity
The CS output is only active when the H bridge is in controller mode. It is inactive (low state) when the controller is in braking mode, which happens when PWM is low or current limit is active. The current will continue to circulate through the motor when the controller starts braking, but the current on the CS pin will not reflect the motor current in braking mode. The CS voltage is used internally by the controller, to avoid interference, do not apply a capacitive load (capacitor) to this pin or connect it to a load over several mA.
The controller module has the ability to limit the motor current by cutting. When the current reaches the threshold value, the controller will set into braking mode for a short period of time before the motor is fed back on. It is more practical to use the controller with a motor that needs several amps during operation, but much more at start-up.
By default, the current limit is 30 A. It can be lowered by mounting a resistor between the VREF and GND pins. The following diagram shows the relationship between the resistor value on VREF and the current limit value. For example, for 100 kΩ between VREF and GND, the current is reduced to about 16 A. The current limitation is less accurate at particularly low settings (dashed line).
Error detection conditions
The controller can detect various errors signaled by setting the FLT pin to low. In order to use it, it must be connected to a high state (system logic voltage). Short circuit on the outputs, too low voltage and overheating can be detected. All errors disable the motor outputs but do not block them, which means that the controller will try to resume operation after the error has disappeared.
The controller is able to handle large current surges for a short time (100 A for several milliseconds). In continuous operation it can withstand 13 A, but this depends on external conditions such as ambient temperature and motor cooling. A heat sink can be added to the board to improve performance.
The controller has no automatic shutdown in case of overheating. Care must be taken to avoid damaging the system.
Dimensions.
List of G2 High Power controllers
| Name | Voltage power supplies | The current Continuous |
|---|---|---|
| G2 High-Power 18v25 | 30 V | 25 A |
| G2 High-Power 18v17 | 30 V | 17 A |
| G2 High-Power 24v21 | 40 V | 21 A |
| G2 High-Power 24v13 | 40 V | 13 A |
Description of controller's pins.
Specification
- Number of channels: 1
- Power supply voltage: 6.5 V to 40 V
- Operating voltage of the logical part: 1.8 V to 5 V
- Continuous current per channel: 13 A
- Maximum instantaneous current per channel (up to 10 ms): 100 A
- PWM frequency: up to 100 kHz
- Current sensor sensitivity: 0.04 V/A
- Security:
- against reverse connection of the supply voltage
- against too low a supply voltage
- before a short circuit
- Dimensions: 33 x 20 mm
- Weight: 3.3 g (without connectors)
- Modules, goldpin and screw connections included
Useful links
| Name | Value |
|---|---|
| Voltage to | 6.5 V |
| Voltage from | 40.0 V |
| Current | 1 A |
| Channels | 1 |
| Width | 8 cm |
| Height | 1 cm |
| Depth | 10.5 cm |
| Weight | 0.009 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
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If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Instructions and documents
GPSR data
Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
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