Display Unit; Ff Factor; Controller Range; Proportional Gain - Danfoss VLT 3000 Series Product Manual

Parameter description
117

Display unit

(Display unit)
119

FF factor

(Feed fwd factor)
120

Controller range

(Contrl range)
121

Proportional gain

(Proprt / L gain)
122
Integral time
(Integral time)
123
Differentiation time
(Differntl time)
124
Low pass filter
(Lowpass filter)
125
Feedback factor
(Feedback factor)
Value:
% (standard) [0]
°C [1] °F
PPM [2] PPM
Pa [3] In HG
bar [4] bar
RPM
rpm [5]
l/s. [6] gal/s.
m /s. [7] ft
3
l/min [8] gal/min.
m /min. [9] ft
3
l/h [10] gal/h
m /h [11] ft
3
kg/s. [12] LB/s.
kg/min. [13] LB/min.
LB/h
kg/h [14]
T/h [15] t/min.
FT
m [16]
Nm [17] LP FT
m/s. [18] FT/s.
m/min. [19] FT/min.
Value:
0 - 500%
Value:
0 - 100%
Value:
OFF - 10.00
Value:
0.01 - 9999 sec. (OFF)
Value:
OFF - 10.00 sec. (OFF)
Value:
0.0 - 10.00 sec.
Value:
0 - 500%
= Factory setting. Text in ( ) = Display text.
The figures in [ ] are used in bus communication.
®
MG.30.A7.02 - VLT is a registered Danfoss trademark
Choose between a various number of unit
[20] read-outs to be displayed together with the
feedback display value. Display scaling is
[21]
[22] made in parameters 115, 116 and 005.
[23]
[24]
[25]
[26]
/s. [27]
3
[28]
/min. [29]
3
[30]
/h [31]
3
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]
The feed forward function determines the
start frequency proportional to the set point.
100%
The controller range (band width) limits
the output from the PID controller as a per-
100%
centage of f
mum deviation from the start frequency.
Fast control is obtained when the value is
high. The value can be too high, and then
0.01
the process may become unstable.
Fast control is obtained when the integral
time is short.
(OFF)
The value can be too short, and then the
process may become unstable.
9999 = OFF. Means that the integration
function is inactive.
Fast control is obtained when the
differentiation time is short.
The value can be too short, and then the
process may become unstable.
When the differentiation time is 0 sec., the
D-function is not active.
The feedback signal is dampened with a
low pass filter with a time constant (τ) of
0.0
0-10 sec. 0 sec. = non-activated.
Used to adapt a non-optimal feedback sig-
nal.
100%
1.. Load and motor
. This indicates the maxi-
MAX
93