Specifications
9
9.CHARACTERISTICS
9– 9
Lmax
=
Vo
60
• t1 + t2 +
t3
2
........................................................ (9-2)
Where,
Lmax: Maximum coasting distance [mm]
Vo: Machine's fast feed speed [mm/min]
t
1: Delay time of control section [s]
t2: Braking delay time of brake (Note) [s]
t3: Braking time [s]
t
3
=
(J
L
+
J
M
)
•
N
O
9.55 x 10
4
•
(T
L
+
0.8T
B
)
JL : Load inertia moment converted into equivalent [kg • cm
2
]
value on servo motor shaft
JM : Servo motor inertia moment [kg • cm
2
]
No : Servomotor speed during fast feed [r/min]
TL : Load torque converted into equivalent [N • m]
value on servo motor shaft
TB : Brake static friction torque (Note) [N • m]
Note: t2 and TB are the values noted in Table 9-2 Characteristics. JL is the machine's inertia mo-
ment at the servo motor shaft.