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191
[1.8 FAULT MANAGEMENT]
(FLt-)
(1) The parameter can also be accessed in the
[1.3 SETTINGS]
(SEt-)
menu.
Code
Name/Description
Adjustment range
Factory setting
ULd-
•
[PROCESS UNDERLOAD]
ULt
• [Unld T. Del. Detect]
0 to 100 s
0 s
Underload detection time delay.
A value of 0 deactivates the function and renders the other parameters inaccessible.
LUn
• [Unld.Thr.Nom.Speed]
(1)
20 to 100%
60%
Underload threshold at rated motor frequency (
[Rated motor freq.]
(FrS)
page
33
), as a % of the rated motor
torque.
LUL
• [Unld.Thr.0.Speed]
(1)
0 to
[Unld.Thr.Nom.Speed]
(LUn)
0%
Underload threshold at zero frequency, as a % of the rated motor torque.
rMUd
• [Unld. Freq.Thr. Det.]
(1)
0 to 500 or 1,000 Hz
according to rating
0 Hz
Minimum frequency underload detection threshold
Srb
• [Hysteresis Freq.Att.]
(1)
0.3 to 500 or 1,000 Hz
according to rating
0.3 Hz
Maximum deviation between the frequency reference and the motor frequency, which defines steady state
operation.
UdL
• [Underload Mangmt.]
[Freewheel]
(YES)
nO
YES
rMP
FSt
Behavior on switching to underload detection.
-
[Ignore]
(nO)
: Fault ignored
-
[Freewheel]
(YES)
: Freewheel stop
-
[Ramp stop]
(rMP)
: Stop on ramp
-
[Fast stop]
(FSt)
: Fast stop
FtU
• [Underload T.B.Rest.]
(1)
0 to 6 min
0 min
This parameter cannot be accessed if
[Underload Mangmt.]
(UdL)
=
[Ignore]
(nO)
.
Minimum time permitted between an underload being detected and any automatic restart.
In order for an automatic restart to be possible, the value of
[Max. restart time]
(tAr)
page
175
must exceed
that of this parameter by at least one minute.
Parameter that can be modified during operation or when stopped.
Summary of Contents for ER40-G
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Page 21: ...21 The display flashes to indicate the presence of a fault ...
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