Toshiba Tosvert VF-AS1 - Manual (Page 143)

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6
6.18 Acceleration/deceleration suspend function
H : Acceleration/deceleration
suspend function
H : Acceleration suspend frequency
H : Acceleration suspend time
H : Deceleration suspend frequency
H : 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
H Acceleration/deceleration suspend function
:Disabled
:Parameter setting
:Terminal input
H Acceleration suspend frequency ~HJ Hz
H Acceleration suspend time ~ sec.
H Deceleration suspend frequency ~HJ Hz
H Deceleration suspend time ~ sec.
Note1: The acceleration suspend frequency (H) should not be set below the starting frequency (H).
Note2:
The deceleration suspend frequency (H) should not be set below the stop frequency (H).
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 H or H and the desired time with H or H, and then set
H
to .
When the frequency set is reached, the motor stops accelerating or decelerating to rotate at a constant speed.
Output frequency [Hz]
H
Time [s]
H
H
H
2) To suspend acceleration or deceleration by means of a signal from an external control device
Set for the desired external signal input terminal. As long as ON signals are output, the motor continues to
rotate at a constant speed.
Output frequency [Hz]
Time [s]
Terminal board input
Ex.) When using the RR/S4 terminal as the acceleration/deceleration suspend terminal
Title Function Adjustment range Example of setting
H Input terminal function selection 8 (RR/S4) ~