Two-stage acceleration and deceleration – Hitachi L300P User Manual
Page 148
Using Intelligent Input Terminals
Oper
ations
a
nd Moni
tor
ing
4–18
Two-stage
Acceleration and
Deceleration
When terminal [2CH] is turned ON, the
inverter changes the rate of acceleration and
deceleration from the initial settings (F002
and F003) to use the second set of accelera-
tion/deceleration values. When the terminal
is turned OFF, the inverter is returned to the
original acceleration and deceleration time
(F002 acceleration time 1, and F003 decel-
eration time 1). Use A092 (acceleration
time 2) and A093 (deceleration time 2) to
set the second stage acceleration and decel-
eration times.
In the graph shown above, the [2CH] signal becomes active during acceleration. This causes the
inverter to switch from using acceleration 1 (F002) to acceleration 2 (A092).
Opt.
Code
Symbol
Function Name
Input
State
Description
09
2CH
Two-stage Accelera-
tion and Decelera-
tion
ON
Frequency output uses 2nd-stage accelera-
tion and deceleration values
OFF
Frequency output uses the initial accelera-
tion 1 and deceleration 1 values
Valid for inputs:
C001, C002, C003, C004,
C005
Required
settings:
A092, A093, A094=0
Notes:
• Function A094 selects the method for second
stage acceleration. It must be set = 00 to
select the input terminal method in order for
the 2CH terminal assignment to operate.
[2CH]
Switches
Output
frequency
[FW, RV]
target frequency
second
initial
t
5
3
1
4
2
FW
TH
PLC
P24
CM1
See I/O specs on page
2CH
Example (requires input configuration—
see page
):