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functions are activated when the output frequency has reached the re-
sulting reference. The signal outputs can be programmed to give a
warning signal via terminal 46 and via the relay output.
Description of choice:
The output current's upper signal limit I
HIGH
must be programmed within
the frequency converter's normal operating range. See drawing at pa-
rameter 223
Warning: Low current, I
LOW
.
225
Warning: Low frequency, f
LOW
Value:
0.0 - par. 226
Warn.: High frequency, f
HIGH
0.0 Hz
Function:
If the output frequency falls below the preset limit f
LOW
, a warning is giv-
en.
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.
Description of choice:
The lower signal limit of the output frequency f
LOW
must be programmed
within the normal operating range of the frequency converter. See draw-
ing at parameter 223
Warning: Low current, I
LOW
.
226
Warning: High frequency f
HIGH
Value:
Par. 200
Frequency range
= 0-132 Hz [0]/[1].par. 225
f
LOW
- 132 Hz
132.0 Hz
Par. 200
Frequency range
= 0-1000 Hz [2]/[3].par. 225
f
LOW
- 1000 Hz
132.0 Hz
Function:
If the output frequency exceeds the preset limit f
HIGH
a 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 the re-
sulting reference. The signal outputs can be programmed to give a
warning signal via terminal 46 and via the relay output.
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
Warning: Low current, I
LOW
.
227
Warning: Low feedback, FB
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 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 programmed to give a
warning signal via terminal 46 and via the relay output.The unit for feed-
back in Closed loop is programmed in parameter 416
Process units
.
Description of choice:
Set the required value within the feedback range (parameter 414
Mini-
mum feedback, FB
MIN
and 415
Maximum feedback, FB
MAX
).
228
Warning: High feedback, FB
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 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 programmed to give a
warning signal via terminal 46 and via the relay output. The unit for feed-
back in Closed loop is programmed in parameter 416
Process units
.
Description of choice:
Set the required value within the feedback range (parameter 414
Mini-
mum feedback, FB
MIN
and 415
Maximum feedback, FB
MAX
).
229
Frequence bypass, bandwidth
Value:
0 (OFF) - 100 Hz
0 Hz
Function:
Some systems call for some output frequencies to be avoided because of
mechanical resonance problems in the system. In parameters 230-231
Frequency bypass
these output frequencies can be programmed. In this
parameter a bandwidth can be defined on either side of these frequen-
cies.
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 problems in the SYSTEM.
Description of choice:
Enter the frequencies to be avoided. See also parameter 229
Frequency
bypass, bandwidth
.
4 Programming
VLT
®
Decentral FCD 300 Design Guide
84
MG.90.S1.02 - VLT
®
is a registered Danfoss trademark
4