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BBV28581 05/2010 55
Configuration Mode - Complete menu (FULL)
(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 ULF (Process underload fault) page 110
.
Underload detection is only active when the system is in steady state (speed reference reached).
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. Application Underload thresholdLUL can be adjusted
between 20 and 100% of the nominal drive current.
FtU
T
M Time delay before automatic start for the
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 Maximum restart time tAr page 91
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
Visible only if R1 assignment r1 page 52 or a LO1 assignment LO1 page 53 is set to FtA.
Ctd
T
M Motor current threshold
0 to 1.5 In (1) InV
Visible only if R1 assignment r1 page 52 or a LO1 assignment LO1 page 53 is set to CtA.
ttd
T
M Motor thermal state threshold
0 to 118% of tHr 100%
Visible only if R1 assignment r1 page 52 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