E6581301

6.33.5OL reduction starting frequency

￿￿￿￿: OL reduction starting frequency

￿For more details, refer to Section 5.14.

6.33.6Motor 150%-overload time limit!

￿￿￿￿: Motor 150%-overload time limit

￿For more details, refer to Section 5.14.

6.33.7Input 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 trips.

[Parameter setting]

Title

Function

Adjustment range

Default setting

￿￿￿￿￿

Input phase failure detection mode selection

￿:Disabled,￿￿:Enabled

￿￿

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.

6

Note 2: When using a single-phase direct current to operate the inverter, disable this function (￿￿￿￿=￿)

6.33.8Control mode for low current

￿￿￿￿: Low current detection hysteresis width

￿￿￿￿: Low current trip selection

￿￿￿￿: Low current detection current

￿￿￿￿: Low current detection time

• Function

If the current is lower than ￿￿￿￿ level and passes for a time longer than ￿￿￿￿, the inverter trips.

Trip information is displayed as “￿￿.”

￿

￿￿￿￿=￿: No tripping (Failure signal FL deactivated).

A low current alarm can be put out by setting the output terminal function selection parameter.

￿￿￿￿=￿: The inverter will trip (the failure signal FL will be activated) if a current below the current set with

￿￿￿￿flows for the period of time specified with ￿￿￿￿.

Title

Function

Adjustment range

Default setting

￿￿￿￿￿

Low current detection hysteresis width

￿~￿￿ %

￿￿￿

￿￿￿￿￿

Low current trip selection

￿: No trip

￿￿

￿:Trip

 

 

 

￿￿￿￿￿

Low current detection current

￿~￿￿￿ %

￿￿

￿￿￿￿￿

Low current detection time

￿~￿￿￿ sec.

￿￿

F-61

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Image 177
Toshiba VF-AS1 instruction manual Function