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8 detection of output short-circuit – Toshiba VF-FS1 User Manual

Page 156

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E6581381

F-60

6

Title

Function

Adjustment range

Default setting

H

Small current detection current hysteresis

1-20 (%)

10

H

Small current trip/alarm selection

0: Alarm only
1: Tripping

0

H

Small current detection current

0-100 (%) / (A)

0

H

Small current detection time

0-255 [s]

0

Example of operation>

Output terminal function: 24 (UC) Low current detection

H

= (Alarm only)

Time [sec]

H H

H

Output current (%)

Low current
signal output

H

or less

H

ON

OFF

OFF

*

When setting H to (Trip), trip after low current detection time setting of H. After tripping,
the low current signal remains ON.

6.17.8 Detection of output short-circuit

H

: Detection of output short-circuit during start-up

• Function

This parameter detects inverter output short-circuit. It can be usually detected in the length of the
standard pulse. When operating low-impedance motor such as high-speed motor, however, the short-
time pulse should be selected.

H

=: Detection is executed in the length of the standard pulse every time you start up the inverter.

H

=: Detection is executed in the length of standard pulse only during the first start-up after putting on

the power or after resetting.

H

=: Detection is executed with the short-time pulse every time you start up the inverter.

H

=: Detection is executed with the short-time pulse only for the first time after putting power on or

after resetting.