Danfoss VLT 2800 Series, Руководство по эксплуатации

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Preset ref., msb Preset ref. lsb
0 0 Preset ref. 1
0 1 Preset ref. 2
1 0 Preset ref. 3
1 1 Preset ref. 4
Description of choice:
Set the preset reference(s) that is/are to be the op-
tions.
219 Catch up/Slow down reference
(Catch up/Slw dwn)
Value:
0.00 - 100% of the given reference
0.00%
Function:
In this parameter, the percentage value can be set
which will either be added to or deducted from the re-
mote-controlled references.
The remote-controlled reference is the sum of preset
references, analogue references, pulse reference and
any references from serial communication.
Description of choice:
If Catch up is active via a digital input, the percentage
value in parameter 219 Catch up/Slow down refer-
ence will be added to the remote-controlled reference.
If Slow down is active via a digital input, the percentage
value in parameter 219 Catch up/Slow down refer-
ence will be deducted from the remote-controlled ref-
erence.
221 Current limit, I
LIM
(current limit)
Value:
0 - XXX.X % of par. 105
160 %
Function:
In this parameter, the maximum output current I
LIM
is
set. The factory-set value corresponds to the maxi-
mum output current I
MAX
. If the current limit is to be
used as motor protection, set the rated motor current.
If the current limit is set above 100% (the rated output
current of the frequency converter, I
INV.
), the frequency
converter can only handle a load intermittently, i.e. for
short periods at a time. After the load has been higher
than I
INV.
, it must be ensured that for a period the load
is lower than I
INV.
Please note that if the current limit is
set at a lower value than I
INV.
, the acceleration torque
will be reduced to the same extent.
Description of choice:
Set the required maximum output current I
LIM
.
223 Warning: Low current, I
LOW
(warn. current lo)
Value:
0.0 - par. 224 Warning: High current,
I
HIGH
0.0 A
Function:
If the output current falls below the preset limit I
LOW
a
warning is given.
Parameters 223-228
Warning functions are out of func-
tion during ramp-up after a start command and after a
stop command or during stop.The warning functions
are activated when the output frequency has reached
the resulting reference. The signal outputs can be pro-
grammed to give a warning signal via terminal 46 and
via the relay output.
Description of choice:
The lower signal limit of the output current I
LOW
must
be programmed within the normal working range of the
frequency converter.
224 Warning: High current, I
HIGH
(warn. current hi)
Value:
0 - I
MAX
I
MAX
Function:
If the output current exceeds the preset limit I
HIGH
a
warning is given.
Parameters 223-228
Warning functions do not work
during ramp-up after a start command and after stop
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
32 MG.27.A2.02 - VLT
®
is a registered Danfoss trademark