Yaskawa Sigma Mini - Manual (Page 167)

4.2Servomotor Ratings and Characteristics
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Direction of Motor Rotation
Positive rotation of the Servomotor is counter-
clockwise, viewing from the load.
Impact Resistance
Mount the Servomotor with the shaft horizontal.
The Servomotor must withstand the following ver-
tical impacts.
• Impact Acceleration: 490 m/s
2
• Number of Impacts: 2
Note In Servomotors, an accurate detector is attached to the shaft at the opposite end from the
load. Do not apply direct impact to the shaft as it may damage the detector.
Vibration Resistance
Mount the Servomotor with the shaft horizontal.
The Servomotor must withstand the following
vibration accelerations in three directions: verti-
cal, transverse, and longitudinal. The amount of
vibration the servomotor endures will vary de-
pending on the application. Check the vibration
acceleration being applied to your servomotor for
each application.
• Vibration Acceleration: 49 m/s 2
Vibration Class
The Servomotor meets the following vibration
class at rated speed.
• Vibration Class: 15µm or below
Enclosure Rating
The enclosure rating of the Servomotor conforms to IP55 standards.
TERMS
Vibration Class
Vibration class 15µm or below indicates that the total amplitude of vibration of the motor
alone, running at rated speed, does not exceed 15µm.
4
Vertical
Horizontal shaft
Vertical
Horizontal
shaft
Longitudinal
Transverse
Vibration Measurement Position