Accel/Decel - Omron 3G3MX2 User Manual

"A" Group: Standard Functions

3-5-13 Accel/Decel

Func.
Code


116
Switch between accelerations and
decelerations could be done also
using terminal [2CH], when this input
is turned ON the inverter changes the
rate of acceleration and deceleration
from the initial settings (

) to use the second set of accel-
eration/ deceleration values. When
the terminal is turned OFF, the
inverter is returned to the original
acceleration and deceleration time

( acceleration time 1, and
deceleration time 1). Use
time 2) to set the second stage acceleration and deceleration times.
In the graph shown above, the [2CH] becomes active during the initial acceler-
ation. This causes the inverter to switch from using acceleration 1 (

acceleration 2 (
Option Terminal
Code Symbol

2CH
Valid for inputs:
Required settings:
Notes:
• Function  selects the method for second stage acceleration. It must be set =
 to select the input terminal method in order for the [2CH] terminal assignment to
operate.
Standard acceleration and decel-
eration is linear. The inverter CPU
can also calculate an S-curve
acceleration or deceleration curve
as shown. This profile is useful for
favoring the load characteristics in
particular applications.
Curve settings for acceleration
and deceleration are indepenently
selected. To enable the S-curve,

use function

and (deceleration).
"A" Function
Name
Acceleration curve selection
Deceleration curve selection
Output
frequency

and
[2CH]
[FW,RV]


(acceleration time 2) and
).
Function State
Name
Two-stage ON
Accelera-
tion and
Deceleration
OFF
~
, , =
Output
frequency
Target
freq.
0
(acceleration)
Description
Set the characteristic curve of
Acc1 and Acc2, five options:
... Linear
... S curve
... U curve
... inv.U curve
... EL-S curve
Set the characteristic curve of
Dec1 and Dec2, options are same
as above ()
Section 3-5
Target
frequency
second
initial
1
0
1
0

(deceleration
Description
Frequency output uses 2nd-stage
acceleration and deceleration val-
ues
Frequency output uses the initial
acceleration 1 and deceleration
1 values
Accel. curve selection
S-curve
=
A097 01
Linear
=
A097 00
Acceleration period
Run Defaults
Mode
EU
Edit

01

01
t

) to
t
Units
–
–