39
60
2
π
60
2
π
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
2
π
×
745
×
0.0669
2
π
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
2
π
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
2
π
×
745
×
(0.417 + 2.69)
×
10
-
4
60
×
0.1
2
π
×
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
2
π
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
