Hitachi SH1-007H

4-12
Chapter 4
For parameter configuration
[AC-03] to [AC117]
Acceleration/deceleration curve selection
Code/Name
Range (unit)
Initial
value
AC-03 Acceleration curve
selection
00(Linear)/
01(S-curve)/
02(U-curve)/
03(Reverse U-curve)/
04(Elevator S-curve)
00
AC-04 Deceleration curve
selection
00
AC-05 Acceleration curve
constant setting
1 to 10
2
AC-06 Deceleration curve
constant setting
2
AC-08 EL-S-curve ratio at start
of acceleration
0 to 100(%) *1)
25
AC-09 EL-S-curve ratio at end
of acceleration
25
AC-10 EL-S-curve ratio at start
of deceleration
25
AC-11 EL-S-curve ration at end
of deceleration
25
*1) The setting range is limited so that AC-08+AC-09≦100 (%).
For example, when AC-09=25%, the setting range of AC-08 is 0 to 75%.
AC-10 and AC-11 are the same as above.
・When [AC-03]/[AC-04] = 00 (Linear), the Accel/Decel
time operation becomes linear toward the target alue.
・When [AC-03]/[AC-04] = 01 (S-curve), the start and end
of the Accel/Decel time operation is made loose and
shockless operation is performed.
・When [AC-03]/[AC-04] = 02 (U-curve), at the start of the
Accel/Decel time operation is made loose.
・When [AC-03]/[AC-04]=03(Reverse -U-curve), at the
end of the Accel/Decel time operation is made loose.
・For S-curve, U-curve and Reverse U-curve, the curve
degree of Accel/Decel time operation can be set
with [AC-05]/[AC-06].
・When [AC-03]/[AC-04] = 04 (EL-S-curve), at the start
and end of the Accel/Decel time operation is made
loose.
・For EL-S-curve shockless operation, the curve degree of
Accel/Decel time operation can be adjusted with
[AC-08] to [AC-11].
2-stage Accel/Decel time change
Code/Name
Range (unit)
Initial
value
AC115
Accel/Decel change trigger,
1st-motor
00(Switching by [2CH]
terminal)/
01(Switching by setting)/
02(Switching only when
rotation is reversed)
00
AC116 Accel1 to Accel2
frequency transition point,
1st-motor
0.00 to 590.00(Hz)
0.00
AC117 Decel1 to
Decel2 frequency
transition point, 1st-motor
0.00
・Depending on the setting of [AC115], the trigger for switching
to Accel/Decel time 2 is selected from the following.
“When the input terminal 031 [2CH] is turned ON”,
"When the operating frequency reaches the set frequency
[AC116]/[AC117]", “When the operating frequency
switches from forward to reverse”.
・Set the Accel/Decel time1 with [AC120] and [AC122], and the
Accel/Decel time2 with [AC124] and [AC126].
[AC120] to [AC126]
Acceleration/deceleration time setting
Code/Name
Range (unit)
Unit
value
AC120 Acceleration time
setting 1, 1st-motor
0.00 to 3600.00(s)
30.00
AC122 Deceleration time
setting 1, 1st-motor
30.00
AC124 Acceleration time
setting 2, 1st-motor
15.00
AC126 Deceleration time
setting 2, 1st-motor
15.00
・The Accel/Decel time setting is the time when operating from
0 Hz to the maximum frequency as shown below figure.
・In case that the 2-stage Accel/Decel time function is not used,
the Accel/Decel time 1 [AC120]/[AC122] are used.
Ex ) The Accel/Decel time setting is from 0 Hz to the maximum
frequency setting ( [Hb105]/[Hd105] ).
In the case of maximum frequency = 60Hz,
Accel time = 30sec, frequency reference=30Hz,
The time to reach 30Hz is 15 seconds.
( Under conditions when Accel/Decel time does not
pause or etc for other functions.)
・Example of using the 2-stage Accel/Decel time function
is following.
With [AC115] = 00 (Switching by [2CH] terminal)
Output
frequency
2CH
Acc.
time 1
Decel.
time 1
Decel.
Time 2
Acc.
time 2
Output
frequency
Set output frequency
Maximum
frequency
[Hb105]
or
[Hd105]
Actual
acceleration
time
[AC120]
Actual
deceleration
time
[AC122]
Time