Yaskawa SGDB - Manual (Page 242)

USING THE DIGITAL OPERATOR
5.1.1 Selecting a Servomotor cont.
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Roll Feeder
P f
Load J Jℓ kg¡cm 2 (lb¡in 2 .)
Press force
Tension F kg (lb)
Press force P kg (lb)
Roller
Roller diameter D mm (in.)
Roller
Coefficient of friction µ
Motor
Overall efficiency η
G li
Motor
Jℓ
Gear ratio R (= Nm/Nl)
Gear+coupling
GD 2 g
Gear+coupling Jg kg¡cm 2 (lb¡in 2 .)
GD 2 g
Rotor
Load J Jℓ kg¡cm 2 (lb¡in 2 .)
Load torque Tℓ kg¡cm 2 (lb¡in 2 .)
T ℓ
Overall efficiency η Motor
Gear ratio R (= Nm/Nl)
Gear+coupling
Motor
Jℓ
Gear+coupling Jg kg¡cm 2 (lb¡in 2 .)
Gear+coupling
Jg
Others
Load J Jℓ kg¡cm 2 (lb¡in 2 .)
Load torque Tℓ kg¡cm 2 (lb¡in 2 .)
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.
Operating environment
D Operating temperature
D Other
*1 J (inertia) of Table W (load weight) and J (inertia) of the motor are automatically calcu-
lated by the servomotor sizing software.
*2 Gear ratio R = Nm/N ℓ = motor-speed/load-speed
*3 Gear+coupling J g: J of gear or coupling
This is J of the joint (including a gear) between the motor and the load (machine).
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