YASKAWA SGM series User Manual page 229

SERVO SELECTION AND DATA SHEETS
5.2.1 Ratings and Specifications cont.
Note
5
TERMS
218
1
* These items and torque-motor speed characteristics quoted in combination with an SGDA
Servopack at an armature winding temperature of 100°C. Other values quoted at 20°C. All
values typical.
2
* Rated torques are continuous allowable torque values at 40°C with a 250 x 250 x 6 (mm)
(9.84 x 9.84 x 0.24 (in.)) heat sink attached.
NOTE The ratings and specifications above refer to a standard Servomotor.
Add the numerical values below to the moment of inertia values in the table for a motor
fitted with a holding brake and/or a 12-bit absolute encoder.
Other specifications will also change slightly.
Item
Holding brake g
12-bit absolute
encoder d
When a shaft seal is mounted on a motor, run the motor at the following derating factors be-
cause of increase in friction torque.
SGM−
Derating Rate (%)
Holding Brake
The holding brake is automatically applied to the
motor shaft to prevent the load falling in vertical axis
applications when the motor power supply is turned
off or fails. It is only to hold the load and cannot be
used for stopping motor.
Type yp
A3A
2 −4
kg¡m 0.0085
¢10
2 −3
(oz¡in¡s ) (0.120)
¢10
2 −4
0.025
kg¡m
¢10
2 −3
(oz¡in¡s ) (0.352)
¢10
A3A A5A
70 80
SGM−
A5A 01A 02A
0.058
(0.816)
01A 02A 04A
90
Motor
Load
Load
04A 08A
0.14
(1.98)
08A
95
Prevent load falling