YASKAWA SGLFW, User Manual

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12.1 Linear Servomotor Capacity Selection Examples
12-3
12
(5) Verification on the Provisionally Selected Linear Servomotor
• Force under constant load
• Force at load acceleration
• Force at load deceleration
• Effective force
(6) Result
The provisionally selected linear servomotor and SERVOPACK are confirmed to be applicable.
The force diagram is shown below.
F
L
= 9.8
µ
( W
W
+ W
T
+ W
M
) = 9.8
×
0.2
×
(1 + 2 + 0.82) = 7.5 (N)
F
P
= + F
L
= + 7.5
L
60 t
a
60
×
0.02
( W
W
+ W
T
+ W
M
)
120
×
(1 + 2 + 0.92)
= 389.5 (N) < Instantaneous peak force
×
0.9 Satisfactory
υ
F
S
=
−
F
L
=
−
7.
L
60 t
a
60
×
0.02
( W
W
+ W
T
+ W
M
)
120
×
(1 + 2 + 0.82)
= 374.5 (N) < Instantaneous peak force
×
0.9 Satisfactory
υ
Frms = =
t
F
P
2
t
a
+ F
L
2
t
c
+ F
S
2
t
d
108.3 (N) < Rated force
×
0.9 Satisfactory
0.5
(389.5)
2
×
0.02 + (7.5)
2
×
0.36
+
(374.5)
2
×
0.02
(N)
0.02
0.5
0.36 0.02
-374.53
0
7.5
389.5
Force
Speed