Sanyo SUPER BL P5 - Acceleration and Deceleration Time; Acceleration and Decelerate Time

9. SPECIFICATIONS
9－5
9.1.2 Acceleration and Deceleration Time
The acceleration time (t
a
) and deceleration time (t
b
) under certain load conditions are calculated using the
following expressions.
The expressions, however, are for within the rated speed, ignoring the viscosity torque and friction torque of
the motor.
Acceleration time : t
a
= (J
M
+ J
L
) • • (sec)
Deceleration time : t
b
= (J
M
+ J
L
) • • (sec)
t
a
: Acceleration time (sec)
t
b
: Deceleration time (sec)
J
M
: Motor inertia (kg･m
2
)
J
L
: Load inertia (kg･m
2
)
N
1
, N
2
: Motor speed (min
－
1
)
T
P
: Instantaneous maximum stall torque (N･m)
T
L
: Load torque (N･m)
Fig. 9-1 Motor Revolution Speed Time Chart
2π
60
N
2
–N
1
T
P
–T
L
2π
60
N
2
–N
1
T
P
+T
L
N
2
N
1
→ Time
t
b
t
a
For actually determining t
a
and t
b
, it is recommended that the above T
P
≦0.8 T
P
be limited,
making allowance for load.
Note that when power supply voltage is below 200V, the instantaneous torque in high
speed zone drops.