Commercial Power/Inverter Switching - Toshiba TOSVERT VF-AS1 Instruction Manual

If the stall control function is activated during constant-speed rotation
The frequency drops momentarily as a result of stall control, but the time for which the frequency drops is included in
the suspend time.
Output frequency [Hz]
Stall control
Refers to the inverter's function of automatically changing the operation frequency when it detects an
overcurrent, overload or overvoltage. Using the following parameters, you can specify the way, the stall
control is performed for each kind of stall.
Overcurrent stall :  (Stall prevention level 1)
Overload stall
Overvoltage stall :  (Overvoltage limit operation)
Note: Setting the frequency command at the same frequency as the acceleration suspend frequency ()
disables the acceleration suspend function.
Similarly, setting the frequency command at the same frequency as the deceleration suspend frequency
() disables the deceleration suspend function.
6

Commercial power/inverter switching

6.19
 : Commercial power/inverter switching output selection
 : Commercial power/inverter switching frequency
 : Inverter-side switching waiting time
 : Commercial power-side switching waiting time
 : Commercial power switching frequency holding time
• Function
The function switches between the commercial power and the inverter operation without stopping the motor in
case of tripping or by sending a signal. Also transmits switching signals to an external sequence (MC, etc.).
⇒ For details, see Instruction Manual specified in Section 6.40.
[Parameter setting]
Title





Note1: For trips whose causes are displayed with , ,  or , switching is not done automatically.
Note2: Braking function  doesn't operate.
t1


 (Momentary acceleration (deceleration) suspend time) = (t1 + t2 + ts)
:  (Motor overload protection characteristic selection)
Function
Commercial power/inverter
switching output selection
Commercial power/inverter
switching frequency
Inverter-side switching
waiting time
Commercial power-side
switching waiting time
Commercial power switching
frequency holding time
ts t2

Stall
Adjustment range
:Deselect
:Automatic switching in the event of a trip
:Commercial power switching frequency setting
:Commercial power switching frequency setting +
automatic switching in the event of a trip [Note1]
~
~ sec.
~ sec.
~ sec.
F-32
E6581301
Time [s]
Default setting

Inverter with a
model number
ending with
-WN: 
-WP: 
According to
model

