YASKAWA SGD7S-xxxDA0 series Product Manual

Contents

5.3 SERVOPACK Models without a Built-In Dynamic Brake5.3.2 Selecting the Devices Required for the Dynamic Brake Circuit5-135 Wiring and Settings for the Dynamic Brake Rotary Servomotors Linear Servomotors Energy Consumption of the Dynamic Brake ResistorCalculate the energy consumption required to stop the Servomotor using the Dynamic BrakeResistor.To simplify the calculation of energy consumption, assume that all kinetic energy until the Ser-vomotor stops is consumed by the Dynamic Brake Resistor and calculate energy consumptionwith the following formula.Calculate energy consumption at the maximum value of kinetic energy of the Servomotor out ofall anticipated operation patterns. Rotary ServomotorsEnergy consumption of Dynamic Brake Resistor: E DB [J]Motor moment of inertia: J M [kgm 2 ]Load moment of inertia: J L [kgm 2 ]Motor speed before dynamic braking: N [min -1 ]E DB = 1/2 × ( J M + J L ) × (2πN/60) 2Note: Refer to the catalog or product manual of the Servomotor for details on the motor moment of inertia.0.010.020.030.040.050.060.070.080.090.00 5 10 15 20 25 30 35 400.020.040.060.080.0100.0120.0140.00.020.040.060.080.0100.0120.0140.0160.0180.00 5 10 15 20 25 30 35 400.010.020.030.040.050.060.00 5 10 15 20 25 30 35 40SGD7S-210DSGM7G-55DFSGM7G-44DRSGD7S-260DSGD7S-280D0 5 10 15 20 25 30 35 40SGM7G-1ADFSGD7S-370DSGM7G-1EDFSGM7G-75DFSGM7A-70DFInstantaneous MaximumDynamic Brake Torque (N·m)Instantaneous MaximumDynamic Brake Torque (N·m)Instantaneous MaximumDynamic Brake Torque (N·m)Instantaneous MaximumDynamic Brake Torque (N·m)Dynamic Brake Resistance (Ω) Dynamic Brake Resistance (Ω)Dynamic Brake Resistance (Ω) Dynamic Brake Resistance (Ω)0.0500.01,000.01,500.02,000.02,500.03,000.00 5 10 15 20 25 30 35 40Dynamic Brake Resistance (Ω)SGD7S-260DSGLFW-1DD560ASGLTW-80D600BInstantaneous MaximumDynamic Brake Force (N)