YASKAWA Z1000 User Manual page 126

4.7 Basic Drive Setup Adjustments
No.
C1-01
C1-02
C1-03
C1-04
Switching Acceleration Times by Digital Input
Accel/decel time 1 is active by default if no input is set.
Accel/Decel Time Sel. 1
H1-oo = 7
0
1
Figure 4.19 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).
Switching Accel/Decel Times by a Frequency Level
The drive can switch between different acceleration and deceleration times automatically. The drive will switch from accel/
decel time 2 in C1-03 and C1-04 to the default accel/decel time in C1-01 and C1-02 when the output frequency exceeds the
frequency level set in parameter C1-11. When the frequency falls below this level, the accel/decel times are switched back.
Figure 4.20 shows an operation example.
Note: Acceleration and deceleration times selected by digital inputs have priority over the automatic switching by the frequency level set to C1-11.
For example, if accel/decel time 2 is selected, the drive will use only accel/decel time 2; it will not switch from accel/decel time 2 to the
selected time.
(accel time from 0 Hz to C1-11)
C1-03 =
(accel time between C1-11 and E1-04)
C1-01 =
(decel time between E1-04 and C1-11)
C1-02 =
(decel time from C1-11 to 0 Hz)
C1-04 =
n C6-02: Carrier Frequency Selection
Sets the switching frequency of the drive output transistors. Changes to the switching frequency lower audible noise and reduce
leakage current.
Note: Increasing the carrier frequency above the default value automatically lowers the drive current rating.
126
Parameter Name
Acceleration Time 1
Deceleration Time 1
Acceleration Time 2
Deceleration Time 2
Table 4.17 Accel/Decel Time Selection by Digital Input
Accel Time 1
(C1-01)
Output
frequency
ON
FWD (REV)
Run command
Accel/Decel Time Selection 1
(Terminals S1 to S7, H1- oo = "7")
Figure 4.19 Timing Diagram of Accel/Decel Time Change
×
(E1-04)
C1-11
×
(E1-04)
(E1-04 - C1-11) Accel/Decel Time
Switch Frequency
×
(E1-04)
(E1-04 - C1-11)
×
(E1-04)
C1-11
Figure 4.20 Accel/Decel Time Switching Frequency
Active Times
Acceleration
C1-01
C1-03
Decel Time 1
Decel Time 2
(C1-02)
(C1-04)
Accel Time 2
(C1-03)
Decel Time 1
(C1-02)
OFF ON
ON
Output Frequency
C1-11
C1-03 C1-01
setting setting
When the output frequency C1-11, drive uses Accel/Decel Time 1 (C1-01, -02)
When the output frequency < C1-11, drive uses Accel/Decel Time 2 (C1-03, -04)
YASKAWA TOEP YAIZ1U 03B YASKAWA AC Drive – Z1000 User Manual
Setting Range
0.1 to 6000.0 s
Deceleration
C1-02
C1-04
C1-02 C1-04
setting setting
Default
30.0 s