Sigma II User’s Manual Chapter 8: Ratings and Characteristics8 - 198.1.5 SGMUH ServomotorsRating and Specifications for Standard ServomotorsSGMUH Standard Servomotor Ratings and Specifications*1 These specifications and torque-motor speed characteristics are quoted in combination with anSGDH servo amplifier operating at an armature winding temperature of 20°C.Note: These characteristics have been calculated with the following aluminum heat sinks attached for cooling:Heat sink dimensions12 × 12 × 0.5in (300 × 300 × 12mm): 10DA to 20DA18 × 18 × 0.8in (400 × 400 × 20mm): 30DA• Time Rating: Continuous • Insulation Class: Class F• Vibration Class: 15μm or below • Withstand Voltage: 1,800Vac for one minute• Insulation Resistance: 500V DC ,10MΩ minimum• Enclosure: Totally enclosed, self-cooled,IP67 (except for through-sections of the shaft)• Ambient Temperature: 0 to 40°C • Ambient Humidity: 20% to 80% (with nocondensation)• Excitation: Permanent magnet• Mounting: Flange method • Drive Method: Direct driveServomotor ModelSGMUH- 10DA 15DA 30DARated Output *1 kW 1.0 1.5 3.0Rated Torque*1 lb-in 14.1 21.7 43.5N-m 1.59 2.45 4.9Instantaneous Peak Torque*1 lb-in 57.6 97.5 190N-m 6.5 11 21.5Rated Current*1 Arms 2.7 4.1 8.1Instantaneous Maximum Current*1 Arms 8.5 47 28Rated Speed*1 rpm 6000Maximum Speed*1 rpm 6000Torque Constant (lb-in)/A rms 7.2 7.4 7.2(N-m)/Arms 0.81 0.83 0.81Moment of Inertia lb-in-s2 x 10-3 1.54 2.19 6.2kg-m 2 x 10 -4 1.74 2.47 7.00Rated Power Rating*1 kW/s 14.5 24.3 34.3Rated Angular Acceleration*1 rad/s2 9130 9910 7000Inertia Time Constant ms 0.87 0.70 0.72Inductive Time Constant ms 7.1 7.7 17.3
