Schneider Electric Altivar 12 Manual De Usuario
BBV28581 05/2010
55
(1) In = nominal drive current
Code
Name/Description
Adjustment range
Factory setting
I_O-
Input Output menu
(continued)
ULt
M Application underload time delay
0 to 100 s
0 s
ULt
can be adjusted between 0 and 100 s.
If the motor current undershoots the underload threshold
LUL
for longer than the adjustable time delay
ULt
, the drive will stop running and display
Underload detection is only active when the system is in steady state (speed reference reached).
A value of 0 will disable application underload detection.
A value of 0 will disable application underload detection.
LUL
T
M Application Underload threshold
20 to 100% of nCr
60%
Visible only if
Application underload time delay
ULt
is not set to
0
. This parameter is used to detect an
application underload condition on the motor.
LUL
can be adjusted
between 20 and 100% of the nominal drive current.
FtU
T
M Time delay before automatic start for the
underload fault
underload fault
0 to 6 min
0 min
If Atr = YES the drive restarts automatically after an underload fault
ULF
once this time delay has elapsed.
Minimum time permitted between an overload being detected and any automatic restart.
In order for an automatic restart to be possible, the value of
In order for an automatic restart to be possible, the value of
Maximum restart time
tAr
page
must
exceed that of this parameter by at least one minute.
Visible only if
Application underload time delay
ULt
above is not set to
nO
.
Ftd
T
M Motor frequency threshold
0 to 400 Hz
50 or 60 Hz
According to drive
rating
According to drive
rating
page
or a
is set to
FtA
.
Ctd
T
M Motor current threshold
0 to 1.5 In (1)
InV
page
or a
is set to
CtA
.
ttd
T
M Motor thermal state threshold
0 to 118% of tHr
100%
page
is set to
tSA
.
Trip threshold for motor thermal alarm (logic output or relay)
T
Parameter that can be modified during operation or when stopped.
I-O-
drC-
CtL-
FUN-
FLt-
COM-
LUL
+10%
Motor current
LUL
Drive stop on
ULF
detected fault
ULt
<
ULt
(hysteresis)
t