Mitsubishi Electric MELSERVO-JN Series - Page 320

12 - 17
12. SERVO MOTOR
6. The vibration direction is as shown in the figure. The value is the one at the part that indicates the maximum value (normally the
opposite-to-load side bracket). When the servo motor stops, fretting is likely to occur at the bearing. Therefore, suppress the
vibration to about half of the permissible value.
Vibration
Y
X
Servo moto
r
Speed [r/min]
0 1000 2000 3000 4000 5000 6000 7000
10
100
1000
Vibration amplitude (both amplitudes)
[ m]
7. V-10 indicates that the amplitude of a servo motor alone is 10 m or less. The following figure shows the servo motor installation
position for measurement and the measuring position.
Measuring
position
Bottom
Top
Servo motor
8. For the symbols in the table, refer to the following diagram. Do not subject the shaft to load greater than these values in the
table. These values are applicable when the loads are applied independently.
Radial load
Thrust load
L
L : Distance from flange mounting surface to load center
(2) Torque characteristics
POINT
For the system where the unbalanced torque occurs, such as a vertical axis
system, the unbalanced torque of the machine should be kept at 70% or less
of the rated torque.
When the input power supply specifications of the servo amplifier are 1-phase 230VAC, the torque
characteristics are indicated by heavy lines. Part of the torque characteristics are indicated by broken lines for
the 1-phase 100VAC power supply and by thin lines for the 1-phase 200VAC power supply.
[HF-KN053]
0
Torque [N m]
1000 2000 3000 4000 4500
Continuous
running region
Speed [r/min]
0
0.1
0.2
0.3
0.4
0.5
0.6
Short-duration
running region
[HF-KN13]
T
o
r
q
u
e
[
N
m
]
0 1000 2000 3000 4000 4500
Short-duration
running region
Speed [r/min]
0
0.2
0.4
0.6
0.8
1
1.2
Continuous
running region
[HF-KN23]
0
T
o
r
q
u
e
[
N
m
]
Continuous
running region
Speed [r/min]
0
0.5
1
1.5
2
2.5
Short-duration
running region
1000 2000 3000 4000 4500
[HF-KN43]
0
Torque [N m]
Speed [r/min]
1000 2000 3000 4000 4500
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Continuous
running region
Short-duration
running region