Danfoss VLT 5000 Series, Instruction Manual, Page: 134 / 240

ft
3
/h [34]
lb/s [35]
lb/min [36]
lb/h [37]
lb ft [38]
ft/s [39]
ft/min [40]
Function:
Choose among different units to be shown on the dis-
play.
This unit is also used directly in Process control, closed
loop as a unit for Minimum/Maximum reference (pa-
rameters 204/205) and i.
The possibility of choosing a unit in parameter 416 will
depend on the choices made in the following param-
eters:
Par. 002
Local/remote control.
Par. 013 Local control/config. as par. 100.
Par. 100 Configuration.
Select parameter 002 as Remote control
If parameter 100 is selected as
Speed control, open
loop or Torque control, open loop , the unit selected in
parameter 416 can be used in displays (par. 009-12
Feedback [unit] ) of process parameters.
The process parameter to be displayed can be con-
nected in the form of an external analog signal to
terminal 53 (par. 308:
Feedback signal
) or terminal 60
(par. 314: Feedback signal ), as well as in the form of
a pulse signal on terminal 33 (par. 307: Pulse feed-
back ).
Note: The reference can only be shown in Hz ( Speed
control, open loop ) or Nm ( Torque control, open loop ).
If par. 100 is selected as Speed control, closed loop ,
parameter 416 is not active, since both reference and
feedback are always shown as RPM.
If parameter 100 is selected as Process control, closed
loop
, the unit selected in parameter 416 will be used
when displaying both reference (par. 009-12: Refer-
ence [unit] ) and feedbac k (par. 009-12: Feedback
[unit] ).
Scaling of the display indication as a function of the
selected range (par. 309/310, 312/313, 315/316, 327
and 328) for a connected, external signal is effected
for a reference in parameters 204 and 205 and for
feedback in parameters 414 and 415.
Select parameter 002 as Local control
If parameter 013 is chosen as
LCP control and open
loop or LCP digital control and open loop , the refer-
ence will be given in Hz, regardless of the choice made
in parameter 416. A feedback or process signal con-
nected to terminal 53, 60 or 33 (pulse), will, however,
be displayed in the form of the unit selected in param-
eter 416. If parameter 013 is chosen as
LCP control/
as par. 100 or LCP digital control/as par. 100 , the unit
will be as described above under parameter 002, Re-
mote-control.
NOTE
The above applies to display of Reference
[unit] and Feedback [unit] . If Reference [%]
or Feedback [%] is selected, the value dis-
played will be in the form of a percentage
of the selected range.
Description of choice:
Select the desired unit for the reference/feedback sig-
nal.
417 Speed PID proportional gain
(SPEED PROP GAIN)
Value:
0.000 (OFF) - 0.150
0.015
Function:
Proportional gain indicates how many times the fault
(deviation between the feedback signal and the set-
point) is to be amplified. Used together with
Speed
control, closed loop (parameter 100).
Description of choice:
Quick control is obtained at high amplification, but if
the amplification is too high, the process may become
unstable in the case of overshoot.
418 Speed PID integral time
(SPEED INT. TIME)
Value:
2.00 - 999.99 ms (1000 = OFF)
8 ms
VLT
®
5000 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
MG.51.C5.22 - VLT
p
is a registered Danfoss trademark. 131
Progra
mming