G2 High-Power 18v25 - single-channel motor controller 30V/25A - Pololu 2994

Index: PLL-05727 EAN: 5904422333942

Single-channel high-performance DC motor controller. Continuous current per channel is 25 A (momentary up to 100 A), motor supply voltage from 6.5 V to 30 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.

G2 High-Power 18v25 - single-channel motor controller 30V/25A - Pololu 2994
€67.25
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Manufacturer: Pololu
Compatibility: Arduino Raspberry Pi

Product description: G2 High-Power 18v25 - single-channel motor controller 30V/25A - Polol 2994.

The module allows to control one DC motor. The motor can be supplied with voltages from 6.5 to 30 volts with a continuous current consumption of up to 25 A, temporary (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.

In case of using the battery when fully charged, the real voltage can be much higher than the nominal one. Therefore, the manufacturer recommends the use of batteries with a nominal output voltage up to 18 V.

The set includes a controller and connectors for self-soldering.

Connection

For proper operation of the module, it is necessary to supply power to the motors between the VIN and GND pins and connect the outputs responsible for motor movement, which are described in the table below.

PIN Description
VIN Motor supply voltage from 6.5 V to 30 V.
VM Power output after reverse connection protection.
+/- Soldering out to solder an additional capacitor on the motor supply lines.
3V3 (OUT) Output voltage from the regulator 3.3 V, with a current capacity of several mA. Can be used as a reference voltage for other systems. Special care must be taken not to short circuit the adjacent pins.
GND System weight

OUTA

OUTB

Outputs for DC motor connection.
PWM Speed control input for PWM signal connection. Default is in low state
DIR Digital input to control the direction of engine rotation. Low state by default.
SLP If a low state is given, the system is put into standby mode. By default, the output is in the high state - the system is armed.
FLT An open-drain output that indicates the occurrence of a fault. The appearance of a low state indicates a system fault.
CS 10 mV/A current sensor output with 50 mA offset.
VREF Reference voltage input. Connect the resistor to ground to limit the maximum output current. Without additional resistor the maximum value is 60 A.

Operating modes and current limitation

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 L

The motor is clockwise at % PWM.

%

L L H

The motor turns counterclockwise at % PWM

L

X L L Braking.

The PWM signal frequency should be up to 100 kHz, typically 20 kHz is used. The speed is proportional to the filling of the PWM signal. Additionally, the system has a VREF pin to limit the flowing current. The default value is limited to 60 A, a resistor between VREF and ground must be connected in shifts. The resistance dependence is shown in the diagram.

Motor current depending on the resistance connected between the VREF pin and ground.

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, this means that the controller will try to resume operation after the error has disappeared.

The controller can handle large current surges for a short time (100 A for several milliseconds). In continuous operation it can withstand 21 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.

Video

Film describing the operation of the H-bridge - direct current motor controller.

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

Specification

  • Number of channels: 1
  • Motor supply voltage: 6.5 V to 30 V
  • Supply voltage of the logical part: 1.8 V to 5.5 V
  • The outputs operate at 5 V
  • Continuous current: up to 25 A
  • Temporary currents: up to 100 A (for several ms)
  • PWM signal frequency: 100 kHz
  • Current sensor sensitivity: 0.01 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: 5,0 g
  • Included module, goldpin and screw connections

Voltage to 6.5 V
Voltage from 30.0 V
Current 25 A
Channels 1

Same-day shipping

  • Crediting the payment for the order on our account on a business day before 10:00 AM means sending the goods on the same day.
  • All packages are being delivered by GLS Group courier and covered with insurance up to 1200 EUR.
  • You will receive a link to track your package and monitor the progress of delivery as soon as it is shipped.

Terms of delivery 

GLS - zone 1

Austria, Belgium, Croatia, The Czech Republic, Denmark, Germany, Netherlands, Poland, Slovakia 

  • Delivery time: 2-4 days
  • Delivery cost: from 4.18 EUR
  • Insurance: 1200 EUR
GLS - zone 2

Bulgaria, Estonia, France, Hungary, Italy, Latvia, Lithuania, Luxembourg, Portugal, Romania, San Marino, Slovenia

  • Delivery time: 2-5 days
  • Delivery cost: from 5.35 EUR
  • Insurance: 1200 EUR
GLS - zone 3

Finland, Greece, Ireland, Spain, Sweden 

  • Delivery time: 2-7 days
  • Delivery cost: from 7.67 EUR
  • Insurance: 1200 EUR

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