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 :
Overload stall
Overvoltage stall :
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
(

Commercial power/inverter switching

6.19
6
• Function
These parameters are used to specify whether to send a switching signal to an external sequencer (such as
an MC) in the event that the inverter trips. The use of an input signal makes it possible to switch between
inverter operation and commercial power operation without stopping the motor.
⇒ For details, see Instruction Manual (E6581364) specified in Section 6.41.
[Parameter setting]
Title
Note1: For trips whose causes are displayed with
Note2: Braking function
t1
(Momentary acceleration (deceleration) suspend time) = (t1 + t2 + ts)
(Stall prevention level 1)
: (Motor overload protection characteristic selection)
(Overvoltage limit operation)
) disables the deceleration suspend 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
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
doesn't operate.
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]
~ Hz
~ sec.
~ sec.
~ sec.
, , or
F-32
E6581301
Time [s]
Default setting
Inverter with a
model number
ending with
-WN:
-WP:
According to
model
, switching is not done automatically.
)