39
60
2π
60
2π
2
2
Conditions
From these conditions, the following selections are recommended :
Servomotor : SJME-02AMA4
SERVOPACK : SJDE-02APA
0.1
2.69
×
10
-4
60 60
2π
×
745
×
0.0669
2π
N
M
T
L
==
5.2
(
W
)
P
o
=
=
16.4
(
W
)
×
745 ×=
N
M
P
a
=
J
L
t
a
Required Starting Torque
60
t
a
2π
N
M
(
J
M
+
J
L
)
+
T
L
=
T
P
=
T
S
=
T
rms
=
T
P
2
t
a
+
T
L
2
t
c
+
T
S
2
t
d
=
t
+ 0.0669 = 0.309
(
N
m
)
<
1.91
(
N
m
)
= Instantaneous peak torque
Therefore, the servomotor can be used.
<
1.91
(
N
m
)
= Instantaneous peak torque
Therefore, the servomotor can be used.
= 0.1032
(
N
m
)
<
0.637
(
N
m
)
=Rated torque
Therefore, the servomotor can be used.
60
×
0.1
2π
×
745
×
(
0.417 + 2.69
)
×
10
-
4
60
×
0.1
2π
×
745
×
(
0.417 + 2.69
)
×
10
-
4
Required Braking Torque
Effective Torque
Therefore the recommended selection of servomotors and SERVOPACKs has sufficient capacity
and can be used.
–
T
L
=
–
0.0669 = 0.175
(
N
m
)
(
0.297
)
2
×
0.1+
(
0.0669
)
2
×
0.9 +
(
0.177
)
2
×
0.1
1.5
<Ratings>
•
Rated output
•
Rated speed
•
Maximum speed
•
Rated torque
•
Instantaneous peak torque
•
Rotor moment of inertia
•
Allowable load inertia of SERVOPACK
:
200
(
W
)
:
3000
(
min
-1
)
:
4500
(
min
-1
)
:
0.637
(
N
m
)
:
1.91
(
N
m
)
:
0.417
×10
-4
(
kg
m
2
)
:
3
×10
-4
(
kg
m
2
)
60
t
a
2π
N
M
(
J
M
+
J
L
)
Selection of Servomotor Size
Load Running Power
Load Acceleration Power
Recomended Servomotor Selections
Servomotor Check
P
a
+
P
o
=(1 to 2)
×
Motor rated output
T
L
Motor rated torque
N
M
Motor rated speed or maximum speed
J
L
Allowable load inertia of SERVOPACK
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