1.1 Basic Understanding of AC Servos
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1.1.3 Features of Σ-Series Servos
1) Σ-Series SGM/SGMP Servomotors are synchronous type servomotors and have the fol-
lowing features:
• Size and weight reduced to one-third those of
our conventional models.
Compact Servomotor for saving installation
space.
• Servo performance (power rating) enhanced to
three times that of our conventional models.
Enhanced power rating (kW/s) to satisfy every
need.
• A wide product range covering rated output of
30 W to 750 W.
Supply Voltage Rated Output
100 VAC: 30 W, 50 W, 100 W, 200 W, 300 W
(0.04 HP, 0.07 HP, 0.13 HP, 0.27 HP, 0.40 HP)
200 VAC: 30 W, 50 W, 100 W, 200 W, 400 W, 750 W
(0.04 HP, 0.07 HP, 0.13 HP, 0.27 HP, 0.53 HP, 1.01 HP)
2) SGDA Servopacks are divided into the following
two types according to usage:
• For Speed/Torque Control: SGDA-jjjS Type
This type uses speed or torque reference input.
Reference input is by analog voltage.
• For Position Control: SGDA-jjjP Type
This type uses position reference input. Reference
input is by pulse train.
TERMS
Power rating (kW/s)
A constant that represents response performance of a servomotor. It can be determined by
dividing squared rated torque by motor inertia. Power rating is the electric power (kW) that a
servomotor can generate per second.
The greater the power rating, the more powerful the servomotor.
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SGM type
SGMP type
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