YASKAWA SGLFW User Manual page 401

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