Switching Acceleration and Deceleration Times by Motor Selection
When switching between motor 1 and 2 using a digital input (H1-
oo
= 16), parameters C1-01 to C1-04 become accel/decel
times 1 and 2 for motor 1, while C1-05 to C1-08 become accel/decel times 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-
oo
= 7 like shown in
.
Note:
1.
The motor 2 selection function cannot be used with PM motors.
2.
Attempting to use the digital input setting “Accel/Decel time 2 selection” (H1-
oo
= 1A) together with motor 1/2 switching triggers an
oPE03 error, indicating contradictory multifunction input settings.
Table 5.14 Motor Switching and Accel/Decel Time Combinations
Accel/Decel Time 1 (H1-
oo
= 7)
Motor 1 Selected
(Terminal set to H1-
oo
= 16 OFF)
Motor 2 Selected
(Terminal set to H1-
oo
= 16 ON)
Accel
Decel
Accel
Decel
Open
C1-01
C1-02
C1-05
C1-06
Closed
C1-03
C1-04
C1-07
C1-08
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 4 in C1-07 and C1-08 to the default accel/decel time in C1-01 and C1-02 (C1-05 and C1-06 for motor 2) when the
output frequency exceeds the frequency level set to parameter C1-11. When the frequency falls below this level, the accel/
decel times are switched back.
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 4 to the
selected one.
Output Frequency
C1-11
Accel/Decel Time
Switch Frequency
C1-03
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)
C1-01
setting
C1-02
setting
C1-04
setting
C1-03 =
(accel time from 0 Hz to C1-11)
×
(E1-04)
C1-11
C1-01 =
(accel time between C1-11 and E1-04)
×
(E1-04)
(E1-04 - C1-11)
C1-02 =
(decel time between E1-04 and C1-11)
×
(E1-04)
(E1-04 - C1-11)
C1-04 =
(decel time from C1-11 to 0 Hz)
×
(E1-04)
C1-11
Figure 5.32 Accel/Decel Time Switching Frequency
n
C1-09: Fast Stop Time
Sets a special deceleration used when a select group of faults occur (e.g., L8-03 Overheat Pre-Alarm Operation Selection) or
when closing a digital input configured as H1-
oo
= 15 (N.O. input) or 17 (N.C. input). A momentary closure of the digital
input will trigger the Fast Stop operation; it does not have to be closed continuously.
The drive cannot be restarted after initiating a Fast Stop operation until after completing deceleration, clearing the Fast Stop
input, and cycling the Run command.
A digital output programmed for “During Fast Stop” (H2-
oo
= 4C) will be closed as long as Fast Stop is active.
No.
Parameter Name
Setting Range
Default
C1-09
Fast Stop Time
0.0 to 6000.0 s
10.0 s
is set in units of 0.01 s (C1-10 = 0), the setting range becomes 0.00 to 600.00 s
n
C1-10: Accel/Decel Time Setting Units
Determines the units for the acceleration and deceleration times set to C1-01 through C1-09 using parameter C1-10.
No.
Parameter Name
Setting Range
Default
C1-10
Accel/Decel Time Setting Units
0, 1
1
Setting 0: 0.01 s units
The accel/decel times are set in 0.01 s units. The setting range is 0.00 to 600.00 s. C1-10 cannot be set to 0 if any of the
parameters C1-01 to C1-09 is set to 600.1 s or longer.
5.3 C: Tuning
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
223
5
Parameter Details
Summary of Contents for U1000 iQpump Drive
Page 705: ......
