415
Maximum feedback, FB
MAX
(Max. feedback)
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
(REF/FEEDB. UNIT)
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 dis-
play. 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 feed-
back.
Description of choice:
Select the required unit for the reference/feedback sig-
nal.
VLT 2800 Regulators
The VLT 2800 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].
Speed regulation
This PID regulation is optimised for use in applications
in which there is a need to maintain a particular motor
speed. The parameters that are specific for the speed
regulator are parameter 417 to parameter 421.
Process regulation
The PID regulator maintains a constant process mode
(pressure, temperature, flow, etc.) and adjusts the mo-
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
100 MG.27.E3.02 - VLT
®
is a registered Danfoss trademark
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