This chapter describes how to interpret the model numbers
of SGM7D Servomotors and gives their specifications, rat-
ings, and external dimensions.
3.1
Model Designations . . . . . . . . . . . . . . . . . . 3-2
3.2
Specifications and Ratings . . . . . . . . . . . . . 3-3
3.2.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.2.2 Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.2.3 Torque-Motor Speed Characteristics . . . . . . . . 3-12
3.2.4 Servomotor Overload Protection
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.2.5 Allowable Load Moment of Inertia . . . . . . . . . . . 3-19
3.3
External Dimensions . . . . . . . . . . . . . . . . . 3-20
3.4
Selecting Cables . . . . . . . . . . . . . . . . . . . . 3-29
3.4.1 Cable Configurations . . . . . . . . . . . . . . . . . . . . 3-29
3.4.2 Servomotor Main Circuit Cables . . . . . . . . . . . . 3-29
3.4.3 Encoder Cables of 20 m or Less . . . . . . . . . . . . 3-30
3.4.4 Relay Encoder Cables of 30 m to 50 m . . . . . . . 3-30
Specifications,
Ratings, and External
Dimensions of
SGM7D Servomotors
3