Formula and Inputs
Kinetic energy is estimated from reflected inertia and angular speed, then compared with the drive DC-bus absorption capacity.
VoltCheck24 Engineering Calculator
Servo Regeneration Energy and Braking Resistor Calculator
Calculate servo deceleration energy, DC-bus capacitor absorption, braking resistor power, and regeneration margin.
How to use this calculator
- Collect the values below from the equipment nameplate, data sheet, or field measurement.
- Enter values using one consistent unit system and use worst-case operating conditions.
- Review the result, margin, and engineering note before selecting hardware.
- Cross-check the result with the related calculator and save the review for your project record.
Input checklist
- Reflected inertia
- Maximum speed
- Deceleration time
- DC bus voltage and capacitance
Industrial Use Cases
Use this calculator for servo axes, indexing tables, conveyors, winders, hoists, and repeated high-speed deceleration.
Engineering Note
Check the servo drive manufacturer’s minimum resistance, peak power, continuous power, duty cycle, and thermal installation limits.
FAQ
Why is peak resistor power different from continuous power?
Deceleration energy may arrive in short pulses, while the resistor’s average thermal rating depends on repetition and duty cycle.
Can the drive capacitor absorb all regeneration energy?
Sometimes, but the result depends on bus voltage, capacitance, speed, inertia, and deceleration profile.
Preliminary engineering reference only. Confirm final selections against current standards, project specifications, and manufacturer data.