What is dynamic braking?

Dynamic braking is one method used to dissipate excess energy generated when the load controlled by a variable frequency drive (VFD) is quickly slowed or stopped.

How do dynamic braking resistors work?

Dynamic braking resistors absorb excess energy produced in the motor as the drive provides braking torque to stop the motor.

Why is a braking resistor used with a VFD?

A braking resistor supports variable frequency drives by providing a path for the energy produced with braking to dissipate. The braking resistor allows the VFD to brake the motor faster, safer and more effectively without over voltage tripping the VFD.

Dynamic Braking Resistors and Modules | VFD Braking Resistor and Modules

At OnDrive Inc., we provide dynamic braking solutions designed to protect motors and improve system control in deceleration phases. Dynamic braking is used during deceleration applications when sudden stopping or slowing of the motor generates excess kinetic energy that must be dissipated to prevent damage.

Whether you’re controlling conveyor systems, cranes, elevators, or spindle motors, our dynamic braking systems help reduce wear, maintain stability, and prevent overheating during emergency stops or load drops.

Efficient Dynamic Braking Resistors for Motor Systems

Our high-performance dynamic braking resistors absorb excess energy generated during motor deceleration, helping your VFD maintain control and prevent damage. These dynamic braking resistors prevent overvoltage faults in the DC bus and offer a reliable way to manage braking.

Each of our dynamic braking resistors is tested for:

Thermal protectione

Load capacity and ohmic value accuracy

Durability in demanding applications

Compatibility with a wide range of VFD systems

We stock multiple enclosure types and resistance values to meet diverse load and duty cycle requirements.

Advanced Braking Resistor Technology

A braking resistor connects directly to the drive’s braking circuit, enabling quick discharge of excess DC bus voltage. Our braking resistor options are available in custom configurations and standard wattage ratings to suit applications with high inertia loads like lift systems, and machine tools.

An appropriately sized braking resistor extends the VFD’s life and reduces the risk of tripping during heavy braking cycles.

Braking resistors are relatively inexpensive and can be a cost-effective solution for improving braking performance and protecting the VFD in various applications.

Compact and Scalable Dynamic Braking Modules

Dynamic Braking Modules are an economical solution for braking applications that do not result in a large amount of annual energy cost.

By providing increased braking torque allowing faster deceleration makes a dynamic braking module ideal for elevators, packaging machines, and gantry cranes.