Danfoss VLT 2800 Series Operating Instructions Manual page 33

Preset ref., msb Preset ref. lsb
0
0
1
1
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
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
(current limit)
Value:
0 - XXX.X % of par. 105
Function:
In this parameter, the maximum output current I
set. The factory-set value corresponds to the maxi-
mum output current I . If the current limit is to be
MAX
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
converter can only handle a load intermittently, i.e. for
short periods at a time. After the load has been higher
than I , it must be ensured that for a period the load
INV.
is lower than I Please note that if the current limit is
INV.
set at a lower value than I
will be reduced to the same extent.
= factory setting, () = display text, [] = value for use in communication via serial communication port
32
0 Preset ref. 1
1 Preset ref. 2
0 Preset ref. 3
1 Preset ref. 4
0.00%
LIM
160 %
is
LIM
), the frequency
INV.
, the acceleration torque
INV.
®
VLT 2800 Series
Description of choice:
Set the required maximum output current I
223 Warning: Low current, I
(warn. current lo)
Value:
0.0 - par. 224 Warning: High current,
I
HIGH
Function:
If the output current falls below the preset limit I
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
be programmed within the normal working range of the
frequency converter.
224 Warning: High current, I
(warn. current hi)
Value:
0 - I
MAX
Function:
If the output current exceeds the preset limit I
warning is given.
Parameters 223-228 Warning functions do not work
during ramp-up after a start command and after stop
®
MG.27.A2.02 - VLT is a registered Danfoss trademark
.
LIM
LOW
0.0 A
a
LOW
must
LOW
HIGH
I
MAX
a
HIGH