Trane VarioTrane TR1 2800 Series, Operating Instructions Manual

Page: 39 / 137

227
Warning: Low feedback, FBLOW
Value:
-100,000.000 - par. 228
Warn.:FB HIGH
-4000.000
Function:
If the feedback signal falls below the preset limit
FBLOW, a 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 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 feed-
back in Closed loop is programmed in parameter 416
Process units .
Description of choice:
Set the required value within the feedback range (pa-
rameter 414
Minimum feedback, FB MIN and 415 Maxi-
mum feedback, FB MAX ).
228
Warning: High feedback, FBHIGH
Value:
Par. 227
Warn.: FB LOW
- 100,000.000
4000.000
Function:
If the feedback signal gets above the preset limit
FBHIGH, a 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 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 feed-
back in Closed loop is programmed in parameter 416
Process units .
Description of choice:
Set the required value within the feedback range (pa-
rameter 414
Minimum feedback, FB MIN and 415 Maxi-
mum 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 by-
pass
these output frequencies can be programmed. 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 .
38 TR1 2800 Series VFD
Programming