Hitachi L2002 - Manual (Page 162)

Using Intelligent Input Terminals
Oper
ations
and Monitor
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 decelera-
tion time 1). Use A092 (acceleration time 2)
and A0093 (deceleration time 2) to set the
second stage acceleration and deceleration
times.
In the graph shown above, the [2CH] becomes active during the initial acceleration. This
causes the inverter to switch from using acceleration 1 (F002) to acceleration 2 (A092).
Output
frequency
[FW],
[RV]
[2CH]
t
target
frequency
second
initial
1
0
1
0
Option
Code
Terminal
Symbol
Function Name
Input
State
Description
09 2CH Two-stage Accelera-
tion and Deceleration ON Frequency output uses 2nd-stage acceleration
and deceleration values
OFF Frequency output uses the initial acceleration 1
and deceleration 1 values
Valid for inputs:
C001, C002, C003, C004,
C005
Required settings: A092, A093, A094=00
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.
Example (default input configuration
shown—see page
3–47 ):
See I/O specs on page 4–6 .
–FU models
2CH
1 2 3 4 5 L PCS