GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 285)

DV-300 Adjustable Speed Drives
——— FUNCTION DESCRIPTION ———
6
157
Nip-rolls control with load cell
M M E E
0....+10V
+10V
-10V
Feed-forward
Feed-back
-10V
Set
Load cell
Reverse
Forward
Tension set
Forward
Reverse
Line speed
reference
(Internal ramp
master drive)
DRIVE DRIVE
Line speed
Master Nip-roll
Figure 6.16.3.9: Nip-rolls control with load cell
Machine data:
Rated speed of slave motor Vn = 3000rpm
Slave motors speed corresponding to the max. line speed = 85% Vn = 2550rpm
Max. correction of the dancer = +/- 20% of the line speed = +/-510rpm
To the slave drive must be sent the analog signals regarding the line speed and the position of the load cell
signal (0... +10V) and the tension set (0... +10V), and the digital commands regarding the enabling of the PID
control.
The regulator output will be sent to the speed reference 1.
Drive setting: (below are parameters regarding only the PID function)