Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

11.1 Servomotor Capacity Selection Examples(4) Load Moment of Inertia• Liner motion section• Ball screw• CouplingP BJ L1 = M ( ) 2 = 80 × ( ) 2 = 0.507 × 10 -4 (kg • m )2πR• Load moment of inertia at the motor shaft(5) Load Moving Power(6) Load Acceleration Power(7) Provisionally Servomotor Selection(a) Selecting Conditions• T L ≤ Motor rated torque0.0052π × 1J B =πρ • L B • D4B =π× 7.87 × 10 3 × 0.8 × (0.016) 4 = 0.405 × 10 -4 (kg • m 2 )3232J C = 1 M C • D4C =1× 0.3 × (0.03) 2 = 0.338 × 10 -4 (kg • m 2 )88J L = J L1 • J B • J C = 1.25 × 10 -4 (kg • m 2 )2πNP O = M • T L 2π × 3000 × 0.139= = 43.7 (W)60602π60J LP a = ( N M ) 2 = ( × 3000 ) 2 -4 = 123.4 (W)ta2π601.25 × 100.1• Pa + Po = (1 to 2) × Motor rated output• N M ≤ Motor rated speed• J L ≤ SERVOPACK allowable load moment of inertiaThe followings satisfy the conditions.• SGMPH-02A312 servomotor• SGDH-02AP SERVOPACK (for position control)(b) Specifications of Servomotor and SERVOPACK• Rated output: 200 (W)• Rated motor speed: 3000 (min -1 )• Rated torque: 0.637 (N⋅m)• Instantaneous peak torque: 1.91 (N⋅m)• Servomotor rotor moment of inertia: 0.209 × 10 -4 (kg⋅m 2 )• SERVOPACK allowable load moment of inertia: 3.69 × 10 -4 (kg⋅m 2 )• Number of encoder pulses: 2048 (P/R)21111-5