LSIS LSLV-S100 - Setting Acceleration and Deceleration Times; Acc;Dec Time Based on Maximum Frequency

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Learning Basic Features
4.10 Setting Acceleration and Deceleration Times
4.10.1 Acc/Dec Time Based on Maximum Frequency
Acc/Dec time values can be set based on maximum frequency, not on inverter operation
frequency. To set Acc/Dec time values based on maximum frequency, set bA. 08 (Acc/Dec
reference) in the Basic group to 0 (Max Freq).
Acceleration time set at the ACC (Acceleration time) code in the Operation group (dr.03 in an LCD
keypad) refers to the time required for the inverter to reach the maximum frequency from a
stopped (0Hz) state. Likewise, the value set at the dEC (deceleration time) code in the Operation
group (dr.04 in an LCD keypad) refers to the time required to return to a stopped state (0Hz) from
the maximum frequency.
Group
Code
Name
LCD Display
Parameter Setting
Setting Range
Unit
Operation
ACC
Acceleration time
Acc Time
20.0
0.0–600.0
sec
dEC
Deceleration time
Dec Time
30.0
0.0–600.0
sec
20
Maximum
frequency
Max Freq 60.00 40.00–400.00 Hz
bA
08
Acc/Dec reference
frequency
Ramp T Mode 0 Max Freq 0–1 -
09
Time scale
Time scale
1
0.1sec
0–2
-
Acc/Dec Time Based on Maximum Frequency – Setting Details
Code
Description
bA.08
Ramp T Mode
Set the parameter value to 0 (Max Freq) to setup Acc/Dec time based on
maximum frequency.
Configuration
Description
0
Max Freq
Set the Acc/Dec time based on maximum
frequency.
1
Delta Freq
Set the Acc/Dec time based on operating
frequency.
If, for example, maximum frequency is 60.00Hz, the Acc/Dec times are set to 5
seconds, and the frequency reference for operation is set at 30Hz (half of 60Hz),
the time required to reach 30Hz therefore is 2.5 seconds (half of 5 seconds).