SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

Chapter 4 Explanation of Functions
4.2.24 Two-stage acceleration/deceleration function (2CH)
The two-stage acceleration/deceleration function allows you to
change the acceleration or deceleration time while the inverter is
accelerating or decelerating the motor.
Select one of the following three methods of changing the
acceleration or deceleration time:
1) Changing the time by the signal input to an intelligent input
terminal
2) Automatically changing the time when the output frequency
reaches a specified frequency
3) Automatically changing the time only when switching the
motor operation from forward rotation to reverse rotation, or
vice versa
Selecting the 3rd control system enables the change of the
Related code
F002/F202/F302: Acceleration (1) time setting,
1st/2nd/3rd motors
F003/F203/F303: Deceleration (1) time setting,
1st/2nd/3rd motors
A092/A292/A392: Acceleration (2) time setting,
1st/2nd/3rd motors
A093/A293/A393: Deceleration (2) time setting,
1st/2nd/3rd motors
A094/A294: Select method to switch to
Acc2/Dec2 profile, 1st/2nd motor
A095/A295: Acc1 to Acc2 frequency transition
point, 1st/2nd motors
A096/A296: Dec1 to Dec2 frequency transition
point, 1st/2nd motors
C001 to C008: Terminal [1] to [8] functions
acceleration or deceleration time only by terminal input. Not bytwo-stage acceleration/deceleration
frequency.
To change the acceleration/deceleration time by the signal input to an intelligent input terminal, assign
function "09" (2CH) to one of the terminal functions C001 to C008.
Item Function code Data Description
Acceleration (2) time A092/A292/ 0.01 to
setting
A392 3600. (s)
(See examples 1 and 2.)
Deceleration (2) time A093/A293/ 0.01 to
setting
A393 3600. (s)
(See examples 1 and 2.)
00
Changing the time by the signal input to the 2CH terminal
(See example 1.)
Select method to switch
Changing the time at the two-stage acceleration/deceleration frequency
A094/A294 01
to Acc2/Dec2 profile
(See example 2.)
02
Valid only while the inverter is switching the motor between forward and
reverse operations (See example 3.)
Acc1 to Acc2 frequency
0.00 to Valid when "01" is specified for the select method to switch to Acc2/Dec2
A095/A295
transition point
400.0 (Hz) profile (A094/A294) (See example 2.)
Dec1 to Dec2 frequency
transition point
A096/A296
0.00 to
400.0 (Hz)
(Example 1) When "00" is specified for "A094" or "A294"
Valid when "01" is specified for the Select method to switch to Acc2/Dec2
profile (A094/A294) (See example 2.)
(Example 2) When "01" is specified for "A094" or "A294"
Output
frequency
Output
frequency
Acceleration
time 2
Acceleration
time 1
Deceleration
time 2
Deceleration
time 1
Acceleration
time 2
Acceleration
time 1
Deceleration
time 2
Deceleration
time 1
(Example 3) When "02" is specified for "A094" or "A294"
Output
frequency
Deceleration
time 2
Deceleration
time 1
Acceleration
time 1
Acceleration
time 2
4 - 30