Danfoss VLT 5000 Series Instruction Manual page 189

Select Process control, closed loop if the application
has a feedback signal that is not directly related to mo-
tor speed (rpm/Hz), but some other unit, such as tem-
Process control, closed loop (Process PID):
Parameter:
100 Configuration
200 Output frequency range/direction
201 Output frequency low limit
202 Output frequency high limit
203 Reference/feedback range
414 Minimum feedback
415 Maximum feedback
204 Minimum reference
205 Maximum reference
416 Process units
437 Process PID normal/inverse
438 Process PID anti-windup
439 Process PID start frequency
440 Process PID proportional gain
441 Process PID integration time
442 Process PID differentiation time
443 Process PID diff. gain limit
444 Process PID lowpass filter
Select Torque control, open loop if PI control is re-
quired, to change the motor frequency in order to
maintain the torque reference (Nm).
This is relevant for winding and extrusion applications.
Torque control, open loop, is to be selected if the speed
direction is not to be changed during operation; this
Torque control, open loop:
Parameter:
100 Configuration
200 Output frequency range/direction
201 Output frequency low limit
202 Output frequency high limit
203 Reference/feedback range
204 Minimum reference
205 Maximum reference
414 Minimum feedback
415 Maximum feedback
433 Torque proportional gain
434 Torque integration time
186
VLT
perature, pressure, etc. Set the following parameters
in the order shown:
Setting:
Process control, closed loop
Only if [0] or [2] in par. 200
Only if [0] in par. 203
means that either a positive or a negative torque ref-
erence is used at all times.
Set the following parameters in order shown:
Setting:
Torque control, open loop
Only if [0] in par. 203
MG.51.C5.22 - VLT
®
5000 Series
Data value:
[3]
Data value:
[4]
is a registered Danfoss trademark.