5.3 C: Tuning
5.3
C: Tuning
C parameters set the characteristics for acceleration, deceleration, and Jerk. Other parameters in the C group cover
settings for slip compensation, torque compensation, and carrier frequency.
♦ C1: Acceleration and Deceleration Ramps
■ C1-01 to C1-08: Accel, Decel Ramps 1 to 4
Four different sets o f acceleration and deceleration times can be set in the drive by digital inputs, motor selection, or
switched automatically. Acceleration ramp parameters always set the ramp or time to accelerate from 0 to the maximum
speed. Deceleration ramp parameters always set the ramp or time to decelerate from the maximum speed to 0. C1-01 and
C1-02 are the default active accel/decel settings.
No.
Parameter Name
C1-01
Acceleration Ramp 1
C1-02
Deceleration Ramp 1
C1-03
Acceleration Ramp 2
C 1-04
Deceleration Ramp 2
C1-05
Acceleration Ramp 3(Motor 2 A ccel Time 1)
C1-06
Deceleration Ramp 3(Motor 2 D ecel Time 1)
C 1-07
Acceleration Ramp 4(M otor 2 A ccel Time 2)
C1-08
Deceleration Ramp 4(M otor 2 D ecel Time 2)
Setting Range
Default
0.00 to 600.00 s <1>
1.50 s <1>
<1> The setting range and default value depend on the display units set in param eter o1-03. I f o1-03 is set between 0 and 4, the time required to go
from 0% speed to 100% maximum speed is expressed in seconds. I f o1-03 is set to 5 or 6, then setting units will appear in m /s2 or ft/s2. I f the
drive is in V /f control mode the accel/decel ramps can be set in seconds only.
Switching Acceleration Ramps by Digital Input
Accel/decel ramps 1 are active by default if no input is set. The accel/decel ramps 2, 3, and 4 can be activated by digital
inputs (H1-DD = 7 and 1A) as explained in
Table 5.6
.
Table 5.6 Accel/Decel Ramp Selection by Digital Input
Accel/Decel Ramp Sel. 1
И 1-П П = 7
Accel/Decel Ramp Sel. 2
И 1-П П = 1A
Active Ramps
Acceleration
Deceleration
0
0
C1-01
C1-02
0
C1-03
C1-04
0
C1-05
C1-06
C1-07
C 1-08
Figure 5.5
shows an operation example for changing accel/decel ramps. The example below requires that the stopping
method be set for “Ramp to stop” (b1-03 = 0).
O u tp u t
U p /D o w n
c o m m a n d
A c c e l/D e c e l R a m p S e le c tio n 1
(T e r m in a ls S 3 t o S 8 , И 1 - П П = “7 ” )
A c c e l/D e c e l R a m p S e le c tio n 2
(T e rm in a ls S 3 t o S 8 , И 1 - П П = “ 1 A ” )
D e c e l R a m p 1
D e c e l R a m p 2
D e c e l R a m p 3
(C 1 - 0 2 )
D e n 4R
2 A c c e l R a m p 3 ( C 1 - 0 6 )
D e c e l R a m p 4
/ A c c e l R a m p 2 ( C 1 - 0 4 )
( C 1 - 0 5 )
/
( C 1 - 0 8 )
( C 1 - 0 3 )
/
\
/ A c c e l R a m p 4
I
D e c e l R a m p 1
/
A c c e l R a m p 4
(C 1 -0 7 )
(C 1 -0 2 )
O F F
O F F
T im e
O N
O N
O N
O N
O F F
O N
O N
F ig u r e 5 .5 T im in g D ia g ra m o f A c c e l/D e c e l R a m p C h a n g e
O N
144
YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual