GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 330)

GEI-100332Ga
——— FUNCTION DESCRIPTION ———
6
202
Base omega Value in [rpm] corresponding to the maximum angular speed of the winder/unwinder
(motor shaft side).
Vp=π x Φmin x ω x R
where :
Vp= peripheral speed
Φ min=winder minimum diameter (mm)
ω = motor angular speed
R =reduction ratio
ω =Vp/ π x Φmin x R=400/(3.14 x 0.1 x 0.5)=2547rpm
Base omega =set 2547rpm.
Ref speed thr Line speed detecting threshold in %.
When “Line speed” is lower than “Line speed thr” the diameter calculation is disabled.
When “Line speed” is higher than the threshold, the diameter calculation is enabled with
an initial filter corresponding to Diam init filter for the time set in Diam stdy delay.
At the end of this time the filter is set to Diam filter.
Maximum line speed =400m/min . Line speed thr=5% (the diameter calculation is
automatically enabled at 20m/min).
Setting of the parameters in the SPEED DEMAND menu
PARAMETERS
OPTION Menu
————> Torque winder
————> Speed demand
Speed demand En Enabling of the speed reference calculation; set Enable
Winder side Selection of the winding/unwinding side. Selection to be carried out only if the digital
inputs are not set. 0 =up, 1 =down
W gain Setting of the speed reference gain used for the loop saturation. Parameter given as a
percentage of the increase/decrease of the angular speed reference.
W gain=30% (set this starting value)
W offset Offset setting on the speed reference for the winder/unwinder initial phase with a stopped
line. Parameter in [rpm].
W offset=50rpm (check with the material)
Offset acc time Setting of the initial phase ramp with a stopped machine. Parameter in [s]. The acc time
refers to the parameter speed base value
W target Parameter number which the speed reference has to be addressed to. In order to obtain the real
number to be set it is necessary to add +2000H (8192 decimal) to the parameter number.
W target : set 2 as a speed reference:
OPTION Menu
————> Torque winder
————> Speed demand
————> W target = 8235
Paragraph 10.4. “List of the high priority parameters’ shows that Speed ref 2 has the
decimal number 43. In order to obtain the value to be entered add 8192 decimal (fixed
offset): 8192 + 427 = 8235
W reference: It is possible to use it as a monitor for the speed reference .