Danfoss VLT 2881 User Manual

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.
NB!
Parameters 417-421 are only used, if in
parameter 100 Configuration the selection
made is Speed regulation, closed loop [1].
417 Speed PID proportional gain
(SPEED PROP GAIN)
Value:
0.000 (OFF) - 1.000
0.010
Function:
Proportional gain indicates how many times the fault
(deviation between the feedback signal and the set-
point) is to be amplified.
Description of choice:
Quick regulation is obtained at high amplification, but
if the amplification is too high, the process may be-
come unstable in the case of overshooting.
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
46 MG.27.A2.02 - VLT
®
is a registered Danfoss trademark

Danfoss VLT 2881 Specifications

General

Brand	Danfoss
Model	VLT 2881
Category	DC Drives
Language	English