If Slow down is active via a digital input, the percentage
value in parameter 219 Catch up/Slow down reference is
deducted from the remote-controlled reference.
221
Current limit, I
LIM
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 maximum 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.
, ensure that the
load is lower than I
INV
for a period of time. Note that if the
current limit is set at a lower value than I
INV.
, the
acceleration torque is reduced to the same extent.
Description of choice:
Set the required maximum output current I
LIM
.
223
Warning: Low current, I
LOW
Value:
0.0 - parameter 224 Warning: High current, I
HIGH
0.0 A
Function:
If the output current drops below the preset limit I
LOW
, a
warning is given.
Tthe signal outputs can be programmed to give a warning
signal via terminal 46 and via the relay output.
Description of choice:
Programme the lower signal limit of the output current I
LAV
within the normal working range of the frequency
converter.
Illustration 4.12 Parameters for Output Current and Frequency
Limits
224
Warning: High current, I
HIGH
Value:
0 - I
MAX
I
MAX
Function:
If the output current exceeds the preset limit I
HIGH
, a
warning is given.
The warning functions are activated when the output
frequency has reached the resulting reference. The signal
outputs can be programmed to give a warning signal via
terminal 46 and via the relay output.
Description of choice:
Programme the output current's upper signal limit I
HIGH
within the frequency converter's normal operating range.
See Illustration 4.12 for more details.
225
Warning: Low frequency, f
LOW
Value:
0.0 - par. 226
Warn.: High frequency, f
HIGH
0.0 Hz
Function:
If the output frequency drops below the preset limit f
LOW
, a
warning is given.
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 outputs can be programmed
to give a warning signal via terminal 46 and via the relay
output.
Programming
Design Guide
82 Danfoss A/S © Rev. May/2014 All rights reserved. MG27E402
44
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