YASKAWA SGM7D Product Manual page 77

4.2 Specifications and Ratings
4.2.5 Allowable Load Moment of Inertia
SERVOPACKs without Built-in Regenerative Resistors
The following graph shows the allowable load moment of inertia scaling factor of the motor
speed (reference values for deceleration operation at or above the rated torque). Application is
possible without an external regenerative resistor within the allowable value. However, an Exter-
nal Regenerative Resistor is required in the shaded areas of the graphs.
12
10
8
6
4
2
0
0
12
10
8
6
4
2
0
0
3.5
3
2.5
2
1.5
1
0.5
0
0
Note: Applicable SERVOPACK models: SGD7S-2R8A and -2R8F
When an External Regenerative Resistor Is Required
Install the External Regenerative Resistor.
Refer to the following catalog for information on External Regenerative Resistors.
AC Servo Drives Σ-7 Series (Manual No.: KAEP S800001 23)
4-8
SGM7E-02B
100 200 300 400 500 600
Motor speed (min -1 )
SGM7E-07B
100 200 300 400 500 600
-1
Motor speed (min )
SGM7E-14C
50 100 150 200 250 300 350
Motor speed (min -1 )
SGM7E-04C
12
10
8
6
4
2
0
0 100 200 300 400 500
Motor speed (min -1 )
SGM7E-08D
3.5
3
2.5
2
1.5
1
0.5
0
0 100 200 300 400 500
-1
Motor speed (min )
SGM7E-17D
3.5
3
2.5
2
1.5
1
0.5
0
0 50 100 150 200 250 300 350 400
Motor speed (min -1 )
SGM7E-05B
12
10
8
6
4
2
0
600 0 100 200 300
Motor speed (min
SGM7E-10C
6
5
4
3
2
1
0
600 0 100 200 300
Motor speed (min
SGM7E-25D
3.5
3
2.5
2
1.5
1
0.5
0
0 50 100 150
Motor speed (min
400 500 600
-1 )
400 500
-1
)
200 250 300
-1 )