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6.19 Acceleration/deceleration suspend function
f349 : Acceleration/deceleration
suspend function
f350 : Acceleration suspend frequency
f351 : Acceleration suspend time
f352 : Deceleration suspend
frequency
f353 : Deceleration suspend time
• Function
Using these parameters, acceleration or deceleration can be suspended to let the motor run at a constant
speed. There are two ways to suspend acceleration or deceleration: suspending it automatically by setting
the suspend frequency and time using parameters, and suspending it by means of a signal from an
external control device.
These parameters are useful in starting and stopping transfer equipment, textile machines (winders), and
so on.
[Parameter setting]
Title Function Adjustment range Setting value
f349 Acceleration/deceleration suspend function
0:Disabled
1:Parameter setting
2:Terminal input
0
f350 Acceleration suspend frequency
0.0-
fh (Hz) 0.0
f351 Acceleration suspend time
0.0-10.0 (s) 0.0
f352 Deceleration suspend frequency
0.0-
fh (Hz) 0.0
f353 Deceleration suspend time
0.0-10.0 (s)
0.0
Note1: The acceleration suspend frequency (f350) should not be set below the starting frequency (f240).
Note2: The deceleration suspend frequency (f352) should not be set below the stop frequency (f243).
Note3: If the output frequency is lowered by a stall prevention function, the acceleration suspend function may be
activated.
1) To suspend acceleration or deceleration automatically
Set the desired frequency with
f350 or f352 and the desired time with f351 or f353, and then set
f349 to 1.
When the frequency set is reached, the motor stops accelerating or decelerating to rotate at a constant speed.
Output frequency [Hz]
Time [s]
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