Toshiba TOSVERT VF-MB1, Instruction Manual

Page: 205 / 350

E6581697
F-85
6
6.24.7 Control mode for small current
f609
: Small current detection hysteresis
f610
: Small current trip/alarm selection
f611
: Small current detection current
f612 : Small current detection time

Function
If the output current falls below the value set at
f611
and doesn’t return above
f611
+
f609 
for a time that exceeds the value set at
f612
, tripping or output alarm will be activated.
uc
is displayed in the event of a trip.
f610 = 0 : No tripping. (Failure signal FL not activated)
A small current alarm can be put out by setting the output terminal function selection parameter.
f610
=
1
: The inverter will trip if a current below the current set with
f611
flows for the period of time
specified with
f612
. (Failure signal FL activated)
[Parameter setting]
Title Function Adjustment range Default setting
f609
Small current detection hysteresis 1-20 (%) 10
f610 Small current trip/alarm selection
0: Alarm only
1: Tripping
0
f611
Small current detection current 0-150 (%) / (A) 0
f612
Small current detection time 0-255 (s) 0
<Example of operation>
Output terminal function: 26 (UC) Low current detection
f610 = 0 (Alarm only)
Time [sec]
 + 

Output current (%)
Low current
signal output

or less

ON
OFF
OFF
* When setting
f610
to
1
(Trip), trip after low current detection time setting of
f612
. After tripping,
the low current signal remains ON.