Yaskawa Sigma Mini User Manual
Page 158
SERVO SELECTION AND DATA SHEETS
4.1.1 Selecting a Servomotor
— 4-8 —
Roll Feeder
Load GD
2
Jℓ
kg¡cm
2
(lb¡in
2
.)
Press force
Tension
F
N (lb)
Press force
P
N (lb)
Roller
Roller diameter
D
mm (in.)
Roller
Coefficient of friction
µ
Motor
Overall efficiency
η
Motor
Jℓ
Gear ratio
R (= Nm/Nl)
Gear+coupling
Jg
Gear+coupling
Jg
kg¡cm
2
(lb¡in
2
.)
Jg
Rotor
Load GD
2
Jℓ
kg¡cm
2
(lb¡in
2
.)
Load torque
Tℓ
N¡m (lb.in.)
T ℓ
Overall efficiency
η
Motor
T ℓ
Gear ratio
R (= Nm/Nl)
Gear+coupling
Motor
Gear+coupling
Jg
kg¡cm
2
(lb¡in
2
.)
Gear+coupling
Jg
Jℓ
Others
Load GD
2
Jℓ
kg¡cm
2
(lb¡in
2
.)
Load torque
Tℓ
N¡m (lb.in.)
Motor speed
Nm
min
−1
DUTY
td
s
Positioning time
ts
s
Accel/decel time
ta
s
Duty cycle
DUTY
td
s
Positioning distance
Ls
mm (in.)
Moving member speed
Vℓ
m/min
Positioning time
ts
s
Accel/decel time
ta
s
Enter either Vℓ or ts. If both are entered, specify priority.
D
Operating environment
D
Operating temperature
D
Other
4