Toshiba TOSVERT VF-PS1 - OL Reduction Starting Frequency; Input Phase Failure Detections; Control Mode for Low Current

E6581386
F-50
6
6.26.5 OL reduction starting frequency
H : OL reduction starting frequency
⇒ For more details, refer to Section 5.14.
6.26.6 Input phase failure detections

H : Input phase failure detection mode selection

H=: No tripping (Failure signal FL deactivated).
H=: 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
H Input phase failure detection mode selection :Disabled,:Enabled 
Note 1: Setting H 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 (H=)
6.26.7 Control mode for low current

H : Low current detection hysteresis width
H : Low current trip selection
H : Low current detection current
H : Low current detection time
• Function
If the current is lower than
H
level and passes for a time longer than
H
, the inverter trips.
Trip information is displayed as “
WE
.”
H=: No tripping (Failure signal FL deactivated).
A low current alarm can be put out by setting the output terminal function selection parameter.
H=: The inverter will trip (the failure signal FL will be activated) if a current below the current set with
H flows for the period of time specified with H.
Title Function Adjustment range Default setting
H Low current detection hysteresis width ~ % 
H Low current trip selection
: No trip
:Trip

H Low current detection current ~ % 
H Low current detection time ~ sec. 
<Example of operation>
Output terminal function: 26 (UC) Low current detection
H= (No trip)
Ex.) When outputting low current detection signals through output terminal OUT1
Title Function Adjustment range Setting value
H Output terminal function selection 1(OUT1) ~ 
Note: To put out signals to the terminal OUT2, select the parameter H.
・F
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G
RJK This parameter detects inverter input phase failure. At the occurrence of a phase failure, the
protection message is displayed.