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5 Basic Settings
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
5-6 Acceleration/Deceleration Time Settings
5
5-6-3 Automatic Optimum Acceleration/Deceleration
With the EL-S-shape pattern, you can set the EL-S Shape Acceleration/Deceleration Curve Ratio
parameters (A151 to A153) independently.
Setting all of these parameters to 50 [%] is equivalent to selecting the S-shape pattern.
• The automatic acceleration/deceleration function eliminates the need for acceleration/deceleration
settings for inverter operation.
• To use this function, set the Operation Mode Selection (A085) to 02 (Automatic operation).
• Although, conventionally, the user had to set an inverter acceleration/deceleration time depending on
the load conditions etc., this function can automatically adjust the acceleration/deceleration time to
make full use of the inverter’s capacity.
• The acceleration time is the time during which the motor accelerates at the current value within the
setting in the Overload Limit Level (b022) if the overload limit function is enabled, or at approximately
150% or less of the rated current of the inverter if the overload limit function is disabled, respectively.
The deceleration time is the time during which the motor decelerates at a current value of
approximately 150% or less, or at a DC current of approximately 370 V or less (for 200-V class) or at
approximately 740 V or less (for 400-V class) in the inverter.
Thus, the function automatically sets the acceleration/deceleration time by responding in real time to
changes in the load and inertia.
EL-S-shape Curve Ratio
5-6-3 Automatic Optimum Acceleration/Deceleration
Parameter
No.
Function name Data
Default
data
Unit
A085
Operation Mode
Selection
Heavy
load
(CT)
00: Normal operation
01: Energy-saving operation
02: Automatic operation
00 –
Light
load
(VT)
00: Normal operation
01: Energy-saving operation
Related functions A044, A244, A344, b021, b024, b022, b025
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