Two-Stage Acceleration/Deceleration Function (2Ch) - Hitachi SJ700D-004L Instruction Manual

Chapter 4

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
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
Acceleration (2) time
setting
Deceleration (2) time
setting
Select method to switch
to Acc2/Dec2 profile
Acc1 to Acc2 frequency
transition point
Dec1 to Dec2 frequency
transition point
(Example 1) When "00" is specified for "A094" or "A294"
FW
2CH
Output
frequency
Acceleration
time 2
Acceleration
time 1
A092/
F002/
A292/
F202/
A392
F302
(Example 3) When "02" is specified for "A094" or "A294"
FW
RV
Output
frequency
Acceleration
time 1
F002/
F202
Data
A092/A292/ 0.01 to
(See Examples 1 and 2.)
A392 3600. (s)
A093/A293/ 0.01 to
(See Examples 1 and 2.)
A393 3600. (s)
Changing the time by the signal input to the 2CH terminal
00
(See Example 1.)
Changing the time at the two-stage acceleration/deceleration frequency (See
A094/A294 01
Example 2.)
Valid only while the inverter is switching the motor between forward and
02
reverse operations (See Example 3.)
0.00 to Valid when "01" is specified for the select method to switch to Acc2/Dec2 profile
A095/A295
400.0 (Hz) (A094/A294) (See Example 2.)
0.00 to Valid when "01" is specified for the Select method to switch to Acc2/Dec2 profile
A096/A296
400.0 (Hz) (A094/A294) (See Example 2.)
Deceleration
time 2
Deceleration
time 1
A093/ F003/
A293/ F203/
A393 F303
Acceleration
Deceleration
time 2
time 1
F003/
A092/
F203
A292
Deceleration
time 2
A093/
A293
Explanation of Functions
F002/F202/F302: Acceleration (1) time setting,
F003/F203/F303: Deceleration (1) time setting,
A092/A292/A392: Acceleration (2) time setting,
A093/A293/A393: Deceleration (2) time setting,
A094/A294: Select method to switch to Acc2/Dec2
A095/A295: Acc1 to Acc2 frequency transition
A096/A296: Dec1 to Dec2 frequency transition
C001 to C008: Terminal [1] to [8] functions
Description
(Example 2) When "01" is specified for "A094" or "A294"
FW
Output
A095/A295
frequency
Acceleration
time 2
Acceleration
time 1
F002/ A092/
F202 A292
4-30
Related code
1st/2nd/3rd motors
1st/2nd/3rd motors
1st/2nd/3rd motors
1st/2nd/3rd motors
profile, 1st/2nd motor
point, 1st/2nd motors
point, 1st/2nd motors
A096/A296
Deceleration
time 2
Deceleration
time 1
A093/ F003/
A293 F203