On (on)
[1]
Function:
This parameter allows connection of the overmodulation function for the
output voltage.
Description of choice:
Off
[0] means that there is no overmodulation of the output voltage,
which means that torque ripple on the motor shaft is avoided. This can
be a good feature, e.g. on grinding machines.
On
[1] means that an out-
put voltage can be obtained which is greater than the mains voltage (up
to 5 %).
414
Minimum feedback, FB
MIN
Value:
-100,000.000 - par. 415 FB
MAX
0.000
Function:
Parameter 414
Minimum feedback, FB
MIN
and 415
Maximum feedback,
FB
MAX
are used to scale the display text to make it show the feedback
signal in a process unit proportionally to the signal on the input.
Description of choice:
Set the value to be shown on the display as the minimum feedback signal
value on the selected feedback input (parameters 308/314
Analogue in-
puts
).
415
Maximum feedback, FB
MAX
Value:
FB
MIN
- 100,000.000
1500.000
Function:
See description of parameter 414
Minimum feedback, FB
MIN
.
Description of choice:
Set the value to be shown on the display when the maximum feedback
has been obtained on the selected feedback input (parameter 308/314
Analogue inputs
).
416
Process units
Value:
No unit (No unit)
[0]
% (%)
[1]
ppm (ppm)
[2]
rpm (rpm)
[3]
bar (bar)
[4]
Cycles/min (CYCLE/MI)
[5]
Pulses/s (PULSE/S)
[6]
Units/s (UNITS/S)
[7]
Units/min. (UNITS/MI)
[8]
Units/h (Units/h)
[9]
°C (°C)
[10]
Pa (pa)
[11]
l/s (l/s)
[12]
m
3
/s (m3/s)
[13]
l/min. (l/m)
[14]
m
3
/min. (m3/min)
[15]
l/h (l/h)
[16]
m
3
/h (m3/h)
[17]
Kg/s (kg/s)
[18]
Kg/min. (kg/min)
[19]
Kg/hour (kg/h)
[20]
Tons/min. (T/min)
[21]
Tons/hour (T/h)
[22]
Metres (m)
[23]
Nm (nm)
[24]
m/s (m/s)
[25]
m/min. (m/min)
[26]
°F (°F)
[27]
In wg (in wg)
[28]
gal/s (gal/s)
[29]
Ft
3
/s (ft3/s)
[30]
Gal/min. (gal/min)
[31]
Ft
3
/min. (Ft3/min)
[32]
Gal/h (gal/h)
[33]
Ft
3
/h (Ft3/h)
[34]
Lb/s (lb/s)
[35]
Lb/min. (lb/min)
[36]
Lb/hour (lb/h)
[37]
Lb ft (lb ft)
[38]
Ft/s (ft/s)
[39]
Ft/min. (ft/min)
[40]
Psi (Psi)
[41]
Function:
Select among different units to be shown on the display. The unit is read
out if an LCP control unit can be connected, and if
Reference [unit]
[2]
or
Feedback [unit]
[3] has been selected in one of parameters 009-012
Display read-out
, and in Display mode. The unit is used in
Closed loop
also as a unit for Minimum/Maximum reference and Minimum/Maximum
feedback.
Description of choice:
Select the required unit for the reference/feedback signal.
4.6.1 FCD 300 Regulators
The FCD 300 has two integrated PID regulators, one to regulate speed
and one to regulate processes.
Speed regulation and process regulation require a feedback signal back
to an input. There are a number of settings for both PID regulators that
are made in the same parameters, but selection of regulator type will
affect the selections that have to be made in the shared parameters.
In parameter 100
Configuration
it is possible to select regulator type,
Speed regulation, closed loop
[1] or
Process regulation, closed loop
[3].
4 Programming
VLT
®
Decentral FCD 300 Design Guide
92
MG.90.S1.02 - VLT
®
is a registered Danfoss trademark
4
