Selecting A Dynamic Brake Resistor - YASKAWA Sigma-7S Series Product Manual

Selecting a Dynamic
Brake Resistor
This chapter describes the flow and selection methods
used to select an external dynamic brake resistor.
3.1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2 Selection Flow . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.3 Determining the Resistance of the Dynamic Brake Resistor . . 3-4
3.3.1 How to Determine the Resistance of the Dynamic
Brake Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.3.2 Brake Torque and Dynamic Brake Resistance
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.4 Calculating the Energy Consumption of the Dynamic Brake Resistor . .3-14
3.5 Presenting the Required Specifications to the Resistor Manufacturer . .3-15
3