
B-65272EN/04 SPECIFICATIONS FOR THE αi SERIES 6.DETERMINING THE ACCELERATION TIME
- 35 -
Pf : 11×1.2=13.2 [kW]
Pm : 7.5×1.2=9 [kW]
Nb : 1500 [min
-1
]
Nf : 6000 [min
-1
]
Nm : 8000 [min
-1
]
NOTE
For all models, these are not guaranteed values but
guidelines. In case of αCi series, use 30 min rated
output for Pf and Pm (10 min or 15 min rated output
for some models) must be adjusted. And, setting of
the parameter related to acceleration/deceleration
time constant is also necessary. Refer to
Parameter Manual (B-65280EN).
Suppose that JL is 0.0056 [kgf⋅m⋅sec
2
]. Then the acceleration times
are as follows:
- Acceleration time (t1) in the constant-torque range (0 to Nb)
(0.0056+0.0028) ×1500
2
t1=0.10754× =0.154[sec]
13.2×1000
- Acceleration time (t2) in the constant-output range (Nb to Nf)
(0.0056+0.0028) × (6000
2
-1500
2
)
t2=0.10754×
2×13.2×1000
=1.155[sec]
- Acceleration time (t3) in the decreasing-output range (Nf to Nm)
(0.0056+0.0028) × (8000-6000)
t3=0.10754×
(9-13.2) ×1000
13.2×8000-9×6000
×{(8000-6000) - ×Ln(9 / 13.2)}
9-13.2
=1.164[sec]
The total time required for acceleration in the range from 0 to 8000
min
-1
is t1+t2+t3=2.47 [s]