CHAPTER 15 APPENDIXES
15
(4) Temporary selection
[Capacity selection condition]
①TL ≤ TR × 0.9
TL = 0.03 Nm *P.15-26 (3)
②JL ≤ JM × 10 (Frequent feed)
JL = 1.1 × 10-4 kg m2 *P.15-26(2)
JL : Load inertia torque converted to motor shaft [kgm2]
JM : Motor inertia [kgm2]
TAC : Acceleration torque [Nm]
TDC : Deceleration torque [Nm]
TL : Load torque converted to motor shaft [Nm]
TR : Rated torque [Nm]
The motor that satisfies the capacity selection condition (1) and (2) is:
GYS201D5-HB2 (0.2 kW)
(TR = 0.637 Nm, JM = 0.135 × 10-4 kgm2, TMAX = 1.91 Nm)
(5) Shortest acceleration/deceleration time (tAC)
TAC =
(JM + JL) × 2π × N
60 (TAC - TL)
= (0.135 × 10-4 + 1.1 × 10-4) × 2π × 3000
60 (1.91 - 0.03)
= 0.021 s
Acceleration/Deceleration torque at an acceleration/Deceleration time of 0.05 seconds
(Mechanical efficiency (η) : assuming 100%)
[Acceleration torque]
TAC = TL +
(JM + JL) × 2π × N
60 (tAC)
= 0.03 +
(0.135 × 10-4 + 1.1 × 10-4) × 2π × 3000
60 × 0.05
= 0.81 Nm
[Deceleration torque]
TDC = TL -
(JM + JL) × 2π × N
60 (tDC)
= 0.03 -
(0.135 × 10-4 + 1.1 × 10-4) × 2π × 3000
60 × 0.05
= -0.75 Nm
15-26 Capacity Selection Calculation