Description of choice:
The output frequency's upper signal limit f
HIGH
must be
programmed within the frequency converter's normal
operating range. See drawing at parameter 223 Warn-
ing: Low current, I
LOW
.
227
Warning: Low feedback, FB
LOW
(warn.feedb. low)
Value:
-100,000.000 - par. 228
Warn.:FB
HIGH
-4000.000
Function:
If the feedback signal falls below the preset limit
FB
LOW
, a warning is given.
Parameters 223-228 Warning functions are out of
function during ramp-up after a start command and af-
ter a stop command or during stop. The warning func-
tions are activated when the output frequency has
reached the resulting reference.The signal outputs
can be programmed to give a warning signal via ter-
minal 46 and via the relay output.The unit for feedback
in Closed loop is programmed in parameter 416 Proc-
ess units.
Description of choice:
Set the required value within the feedback range (pa-
rameter 414 Minimum feedback, FB
MIN
and 415 Max-
imum feedback, FB
MAX
).
228
Warning: High feedback, FB
HIGH
(warn.feedb high)
Value:
Par. 227 Warn.: FB
LOW
- 100,000.000
4000.000
Function:
If the feedback signal gets above the preset limit
FB
HIGH
, a warning is given.
Parameters 223-228 Warning functions are out of
function during ramp-up after a start command and af-
ter a stop command or during stop. The warning func-
tions are activated when the output frequency has
reached the resulting reference. The signal outputs
can be programmed to give a warning signal via ter-
minal 46 and via the relay output. The unit for feedback
in Closed loop is programmed in parameter 416 Proc-
ess units.
Description of choice:
Set the required value within the feedback range (pa-
rameter 414 Minimum feedback, FB
MIN
and 415 Max-
imum feedback, FB
MAX
).
229 Frequence bypass, bandwidth
(FREQ BYPASS B.W.)
Value:
0 (OFF) - 100 Hz
0 Hz
Function:
Some SYSTEMs call for some output frequencies to
be avoided because of mechanical resonance prob-
lems in the SYSTEM. In parameters 230-231 Frequen-
cy bypass these output frequencies can be program-
med. In this parameter a bandwidth can be defined on
either side of these frequencies.
Description of choice:
The frequency set in this parameter will be centered
around parameters 230 Frequency bypass 1 and 231
Frequency bypass 2.
230 Frequency bypass 1 (FREQ. BYPASS 1)
231 Frequency bypass 2 (FREQ. BYPASS 2)
Value:
0 - 1000 Hz
0.0 Hz
Function:
Some SYSTEMs call for some output frequencies to
be avoided because of mechanical resonance prob-
lems in the SYSTEM.
Description of choice:
Enter the frequencies to be avoided. See also param-
eter 229 Frequency bypass, bandwidth.
= factory setting, () = display text, [] = value for use in communication via serial communication port
84 MG.27.E2.02 - VLT is a registered Danfoss trademark
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