YASKAWA A1000 Series Quick Start Manual page 71

High performance vector control drive
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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. They can be selected by digital inputs,
by the motor selection, or can be 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. The accel/decel times 2, 3, and 4 can be activated by digital
inputs (H1-
= 7 and 1A) as explained in
Accel/Decel Time Sel. 1
H1-
= 7
0
1
0
1
Figure 63
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).
Figure 63
Output
frequency
FWD (REV)
Run command
Accel/Decel Time Selection 1
(Terminals S1 to S8, H1-
Accel/Decel Time Selection 2
(Terminals S1 to S8, H1-
Switching Acceleration and Deceleration Times by Motor Selection
When switching between motor 1 and 2 using a digital input (H1-
decel time 1 and 2 for motor 1, while C1-05 to C1-08 become accel/decel time 1 and 2 for motor 2. Accel/decel times 1
and 2 can be switched for each motor using a digital inputs set to H1-
Note: 1. The motor 2 selection function cannot be used when PM motor is used.
2. The digital input setting "Accel/Decel time 2 selection" (H1-
do so triggers an oPE03 error, indicating a contradictory multifunction input settings.
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide
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
23.
Table 23 Accel/Decel Time Selection by Digital Input
Accel/Decel Time Sel. 2
H1-
= 1A
0
0
1
1
Decel Time 1
(C1-02)
Accel Time 1
Accel Time 2
(C1-01)
(C1-03)
ON
OFF
ON
ON
= "7")
= "1A")
Figure 63 Timing Diagram of Accel/Decel Time Change
4 Start-Up Programming & Operation
Acceleration
C1-01
C1-03
C1-05
C1-07
Decel Time 3
Decel Time 2
Accel Time 3
(C1-06)
(C1-04)
(C1-05)
Accel Time 4
(C1-07)
Decel Time 1
(C1-02)
OFF
ON
OFF
ON
= 16), parameters C1-01 to C1-04 become accel/
= 7 like shown in
= 1A) cannot be used together with motor 1/2 switching. Trying to
Setting Range
0.0 to 6000.0 s
<1>
Active Times
Deceleration
C1-02
C1-04
C1-06
C1-08
Decel Time 4
(C1-08)
Decel Time 1
(C1-02)
Time
ON
ON
Table
24.
Default
10.0 s
4
71

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