Torque-Motor Speed Characteristics Of - YASKAWA E Series Product Manual

5.2 Specifications and Ratings
5.2.5 Torque-Motor Speed Characteristics of the SGM7A-15 to -70
5.2.5 Torque-Motor Speed Characteristics
of the SGM7A-15 to -70
A : Continuous duty zone
B :
Intermittent duty zone
7000
6000
5000
4000
3000
2000
1000
7000
6000
5000
4000
3000
2000
1000
A single-phase power input can be used in combination with the SGD7S-120A
*
Note: 1. These values are for operation in combination with a SERVOPACK when the temperature of the armature
2. The characteristics in the intermittent duty zone depend on the power supply voltage.
3. If the effective torque is within the allowable range for the rated torque, the Servomotor can be used within
4. If you use a Servomotor Main Circuit Cable that exceeds 20 m, the intermittent duty zone in the torque-
 Notes for the Ratings of Servomotors without Gears
*1. These values are for operation in combination with a SERVOPACK when the temperature of the armature wind-
ing is 100°C. The values for other items are at 20°C. These are typical values.
*2. The rated torques are the continuous allowable torque values at a surrounding air temperature of 40°C with an
aluminum heat sink of the dimensions given in the table.
*3. This does not apply to the shaft opening. Protective structure specifications apply only when the special cable is
used.
*4. Observe the following precautions if you use a Servomotor with a Holding Brake.
• The holding brake cannot be used to stop the Servomotor.
• The time required to release the brake and the time required to brake depend on which discharge circuit is
used.
Confirm that the operation delay time is appropriate for the actual equipment.
• The 24-VDC power supply is not provided by Yaskawa.
To externally connect a dynamic brake resistor, select hardware option specification 020 for the SERVOPACK.
*5.
However,you cannot externally connect a dynamic brake resistor if you use the following SERVOPACKs (maxi-
mum applicable motor capacity: 400 W).
• SGD7S-R70
• SGD7W-1R6A20A020 to -2R8A20A020
• SGD7C-1R6AMAA020 to -2R8MAA020
The allowable shaft loads are illustrated in the following figure. Design the mechanical system so that the thrust
*6.
and radial loads applied to the Servomotor shaft end during operation do not exceed the values given in the
table.
*7. These values are for operation in combination with a SERVOPACK when the temperature of the armature wind-
ing is 20°C. These are typical values.
If the heat sink is 250 mm × 250 mm × 6 mm, the rated output is 550 W and the rated torque is 1.75 N·m.
*8.
Refer to the following section for details.
For the SGM7A-25A or SGM7A-50A, the maximum motor speed for the continuous duty zone is 5,000 min
*9.
Use the Servomotor within the continuous duty zone for the average motor speed and effective torque.
5-8
(solid lines): With three-phase 200-V or single-phase 230-V input
(dotted lines): With single-phase 200-V input
SGM7A-15A*
7000
6000
5000
4000
3000
A B
2000
1000
0
0 5 10 15 20
Torque (N·m)
SGM7A-40A
7000
6000
5000
4000
3000
A B
2000
1000
0
0 10 20 30 40
Torque (N·m)
winding is 20°C. These are typical values.
the intermittent duty zone.
motor speed characteristics will become smaller because the voltage drop increases.
 
A020 to -2R8
LF
Radial load
Thrust load
5.2.10 Servomotor Heat Dissipation Conditions on page 5-14
SGM7A-20A
7000
6000
5000
4000
3000
A B
2000
1000
0
0 5 10 15 20
Torque (N·m)
SGM7A-50A
7000
6000
5000
4000
3000
A B
2000
1000
0
0 15 30 45 60
Torque (N·m)
A020
SGM7A-25A
7000
6000
5000
4000
3000
A B
2000
1000
0
0 7.5 15 22.5 30
Torque (N·m)
SGM7A-70A
A B
0
0 15 30 45 60
Torque (N·m)

A008.
SGM7A-30A
A B
0
0 10 20 30 40
Torque (N·m)
-1
.