Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

4 SERVOPACK Specifications and Dimensional Drawings4.5.3 Load Moment of InertiaServomotorAllowable Load Moment of InertiaCapacity RangeModel(Rotor Moment of Inertia Ratio)SGMPH 100 W × 25200 W × 15400 W × 7750 W, 1.5 kW × 5SGMGH (1500 min -1 ) 450 W to 15 kW × 5SGMGH (1000 min -1 ) 300 W to 5.5 kW × 5SGMSH 1.0 kW to 5.0 kW × 5SGMDH 2.2 kW to 4.0 kW × 5SGMUH 1.0 kW to 4.0 kW × 5(4) Overhanging LoadsA servomotor may not be operated with an overhanging load, which tends to continuously rotate the motor. Fig.4.1 shows a typical example of such a load.• DO NOT use the servomotor with the Vertical Axis Motor Drive without CounterweightServomotor• DO NOT use the servomotor with the Feeding Motor DriveTensionServomotorServomotor rotated repeatedly at aconstant speed to maintain the tension.ServomotorFig. 4.1 Examples of Overhanging LoadsIMPORTANT• Never operate servomotors with an overhanging load. Doing so will cause the SERVOPACKs’ regenerativebrake to be applied continuously and the regenerative energy of the load may exceed the allowable rangecausing damage to the SERVOPACK.• The regenerative brake capacity of the SGDH SERVOPACKs is rated for short-term operation approximatelyequivalent to the time it takes to decelerate to a stop.4-22