Second Acceleration And Deceleration Functions - Hitachi SJ200 Series Instruction Manual

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"A" Group: Standard Functions

Second Acceleration and Deceleration Functions

The SJ200 inverter features two-stage acceleration and deceleration ramps. This gives
flexibility in the profile shape. You can specify the frequency transition point, the point
at which the standard acceleration (F002) or deceleration (F003) changes to the second
acceleration (A092) or deceleration (A093). Or, you can use intelligent input [2CH] to
trigger this transition. These profile options are also available for the second motor
settings. Select a transition method via A094 as depicted below. Be careful not to
confuse the second acceleration/deceleration settings with settings for the second
motor!
A094 = 00
Output
frequency
2CH
input
Func.
Code SRW Display
A092 Acceleration (2) time
setting
ACC 2
A292 Acceleration (2) time
setting, (2nd motor)
2ACC2
A093 Deceleration (2) time
setting
DEC 2
A293 Deceleration (2) time
setting, (2nd motor)
2DEC2
A094 Select method to switch
to Acc2/Dec2 profile
ACC CHG
A294 Select method to switch
to Acc2/Dec2 profile,
2nd motor
2ACCCHG
Transition via 2CH input
Accel 2
Accel 1
0
1
0
"A" Function
Name /
Duration of 2nd segment of
acceleration, range is:
0.01 to 3000 sec.
0015.00s
Duration of 2nd segment of
acceleration, 2nd motor,
range is: 0.01 to 3000 sec.
015.00s
Duration of 2nd segment of
deceleration, range is:
0.01 to 3000 sec.
015.00s
Duration of 2nd segment of
deceleration, 2nd motor,
range is: 0.01 to 3000 sec.
015.00s
Two options for switching
from 1st to 2nd accel/decel:
00... 2CH input from terminal
TM
01... transition frequency
Two options for switching
from 1st to 2nd accel/decel:
00... 2CH input from terminal
01... transition frequency
TM
(2nd motor)
A094 = 01
Output
frequency
A 95
0
t
t
Run
Mode
Description
Edit
Transition via freq. level
Accel 2
Frequency
transition point
Accel 1
t
Defaults
–FEF –FU
Units
(EU) (USA)
15.00 15.00 sec.
15.00 15.00 sec.
15.00 15.00 sec.
15.00 15.00 sec.
00 00 —
00 00 —