Output Phase Failure Detection; Ol Reduction Starting Frequency; Motor 150%-Overload Time Limit; Input Phase Failure Detections - Toshiba TOSVERT VF-AS1 Instruction Manual

6.33.4 Output phase failure detection

 : Output phase failure detection mode selection
• Function
This parameter detects inverter output phase failure. If the inverter detects an open phase failure, the
tripping function and the FL relay will be activated. At the same time, the trip information  will also
be displayed.
Set = to open the motor-inverter connection by switching commercial power operation to inverter
operation.
=: No tripping
=: With the power on, the phase failure detection is enabled only at the start of the first operation. The
=: The inverter checks for output phase failures each time it starts operation. The inverter will trip if the
=: The inverter checks for output phase failures during operation. The inverter will trip if the inverter
=: The inverter checks for output phase failures at the start of and during operation. The inverter will trip if
=: If the inverter detects an open phase failure in every phase, it does not trip but restarts operation when
Note: A check for output phase failures is made during auto-tuning 1 (=, ), regardless of the setting of
this parameter .
[Parameter setting]
Title
6


6.33.5 OL reduction starting frequency

 : OL reduction starting frequency
⇒ For more details, refer to Section 5.14.

6.33.6 Motor 150%-overload time limit

 : Motor 150%-overload time limit
⇒ For more details, refer to Section 5.14.

6.33.7 Input phase failure detections

 : Input phase failure detection mode selection
• Function
This parameter detects inverter input phase failure. At the occurrence of a phase failure, the 
protection message is displayed.

=: No tripping (Failure signal FL deactivated).
=: This parameter detects inverter input phase failure. If the inverter detects an open phase failure, it
[Parameter setting]
Title

Note 1: Setting  to  (input phase failure detection: disabled) may result in a breakage of the capacitor in the
inverter main circuit if operation is continued under a heavy load in spite of the occurrence of an input phase
failure.
Note 2: When using a single-phase direct current to operate the inverter, disable this function (=)
inverter will trip if the inverter detects an open phase failure.
inverter detects an open phase failure.
detects an open phase failure.
the inverter detects an open phase failure.
every phase is reconnected.
The inverter does not check for output phase failures when restarting after a momentary power failure.
Function
:Deselect
:At starting (only one time after power is turned on)
Output phase failure
:At starting (each time power is turned on)
detection mode
:During operation
selection
:At starting + during operation
:Output cut-off detection enabled
trips.
Function
Input phase failure detection mode selection
Adjustment range
Adjustment range
:Disabled,:Enabled
F-56
E6581528
Default setting

Default setting
