C: Tuning; C: Tuning; C1: Acceleration And Deceleration Times - YASKAWA AC Drive-A1000 Technical Manual

5.3 C: Tuning

5.3

C: Tuning

C parameters set the characteristics for acceleration, deceleration, and S-curves. Other parameters in the C group cover settings
for slip compensation, torque compensation, and carrier frequency.
u

C1: Acceleration and Deceleration Times

n C1-01 to C1-08: Accel, Decel Times 1 to 4
Four different sets of acceleration and deceleration times can be set in the drive by digital inputs, motor selection, or switched
automatically.
Acceleration time parameters always set the time to accelerate from 0 Hz to the maximum output frequency (E1-04).
Deceleration time parameters always set the time to decelerate from maximum output frequency to 0 Hz. C1-01 and C1-02
are the default active accel/decel settings.
No.
C1-01
C1-02
C1-03
C1-04
C1-05
C1-06
C1-07
C1-08
<1> The setting range for the acceleration and deceleration times is determined by the accel/decel time setting units in C1-10. For example, if the time
is set in units of 0.01 s (C1-10 = 0), the setting range becomes 0.00 to 600.00 s.
Switching Acceleration Times by Digital Input
Accel/decel times 1 are active by default if no input is set. Activate accel/decel times 2, 3, and 4 by digital inputs (H1-oo =
7 and 1A) as explained in
Accel/Decel Time Sel. 1
H1-oo = 7
0
1
0
1
Figure 5.29 shows an operation example for changing accel/decel. times. The example below requires that the stopping method
be set for "Ramp to stop" (b1-03 = 0).
FWD (REV)
Run command
Accel/Decel Time Selection 1
(Terminals S1 to S8, H1- oo = "7")
Accel/Decel Time Selection 2
(Terminals S1 to S8, H1- oo = "1A")
154
Parameter Name
Acceleration Time 1
Deceleration Time 1
Acceleration Time 2
Deceleration Time 2
Acceleration Time 3 (Motor 2 Accel Time 1)
Deceleration Time 3 (Motor 2 Decel Time 1)
Acceleration Time 4 (Motor 2 Accel Time 2)
Deceleration Time 4 (Motor 2 Accel Time 2)
Table 5.12.
Table 5.12 Accel/Decel Time Selection by Digital Input
Accel/Decel Time Sel. 2
H1-oo = 1A
Decel Time 1
(C1-02)
Accel Time 1
Accel Time 2
(C1-01)
Output
(C1-03)
frequency
ON OFF
Figure 5.29 Timing Diagram of Accel/Decel Time Change
0
0
1
1
Decel Time 3
Decel Time 2
Accel Time 3
(C1-06)
(C1-04)
(C1-05)
Decel Time 1
(C1-02)
ON
ON
ON
OFF
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Setting Range
<1>
0.0 to 6000.0 s
Active Times
Acceleration
C1-01
C1-03
C1-05
C1-07
Decel Time 4
(C1-08)
Accel Time 4
Decel Time 1
(C1-07)
(C1-02)
Time
OFF
ON
ON
ON
Default
10.0 s
Deceleration
C1-02
C1-04
C1-06
C1-08