Danfoss VLT FCD 311 Design Manual page 71

reference will be added to the remote-controlled ref-
erence.
If Slow down is active via a digital input, the percent-
age value in parameter 219 Catch up/Slow down
reference will be deducted from the remote-
controlled reference.
221 Current limit, I
221
LIM
(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 cur-
rent. If the current limit is set above 100% (the rated
output current of the frequency converter, I
frequency converter can only handle a load intermit-
tently, i.e. for short periods at a time. After the load
has been higher than I , it must be ensured that
INV.
for a period the load is lower than I
that if the current limit is set at a lower value than
I , the acceleration torque will be reduced to the
INV.
same extent.
Description of choice:
Set the required maximum output current I
223 Warning: Low current, I
223
(WARN. CURRENT LO)
Value:
0.0 - par. 224 Warning: High current, I
Function:
If the output current falls below the preset limit I
a warning is given.
Parameters 223-228 Warning functions are out of
function 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 out-
puts can be programmed 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.
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.04.A1.02 - VLT is a registered Danfoss trade mark
160 %
is
LIM
), the
INV.
Par. 223 Warn.: Low current, I
. Please note
If the output current exceeds the preset limit I
INV.
warning is given.
Parameters 223-228 Warning functions do not work
during ramp-up after a start command and after stop
command or during stop. The warning functions are
activated when the output frequency has reached
.
LIM
the resulting reference. The signal outputs can be
programmed to give a warning signal via terminal 46
and via the relay output.
LOW
The output current's upper signal limit I
programmed within the frequency converter's normal
0.0 A
HIGH
operating range. See drawing at parameter 223
Warning: Low current, I
LOW
0.0 - par. 226
Warn.: High frequency, f
If the output frequency falls below the preset limit
f
must
LAV
Parameters 223-228 Warning functions are out of
function during ramp-up after a start command and
after stop command or during stop. The warning
functions are activated when the output frequency
has reached the resulting reference. The signal out-
®
VLT FCD Series
224 Warning: High current, I
224
(WARN. CURRENT HI)
Value:
Function:
Description of choice:
LOW
225 Warning: Low frequency, f
225
(WARN.FREQ. LOW)
Value:
HIGH
Function:
, a warning is given.
LOW
HIGH
I
- I
MAX
LOW MAX
a
HIGH
must be
HIGH
.
LOW
0.0 Hz
71