GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 254)

GEI-100332Ga
——— FUNCTION DESCRIPTION ———
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6.14.9 Current limitation according to the speed (I/n curve)
FUNCTIONS
I/n curve
[750] I/n curve
[751] I/n lim 0 [%]
[752] I/n lim 1 [%]
[753] I/n lim 2 [%]
[754] I/n lim 3 [%]
[755] I/n lim 4 [%]
[756] I/n speed [rpm]
This function allows the changing of the current limits “In use Tcur lim + / -“ according to the motor speed,
through a curve composed by six setpoints. The “I/n speed” and “I/n lim 0,1,2,3,4”are the parameters that al-
low to define the curve.
Parameter description No.
Value
Standard
Configuration min max
Factory
American
Factory
European
I/n curve
Enabled (1)
Disabled (0)
750 0 1 0 0 -
I/n lim 0 [%] 751 0 200 0 0 -
I/n lim 1 [%] 752 0 200 0 0 -
I/n lim 2 [%] 753 0 200 0 0 -
I/n lim 3 [%] 754 0 200 0 0 -
I/n lim 4 [%] 755 0 200 0 0 -
I/n speed [rpm] 756 0 P162 0 0 -
“I/n speed” parameter defines the speed range in which the current
limits are kept at the value of “I/n lim 0”. The speed range included between “I/n speed” and the 100% of the
max. speed will be divided internally in four equal segments , at the ends of which the current limits “I/n lim
0,1,2,3,4” are associated. The set values must decrease , starting from “I/n lim 0” up to “I/n lim 4”.
I/n curve Enabled Limits current /speed curve enabled
Disabled Limits current /speed curve disabled
I/n lim 0 Current limit of the I/n curve that operates constantly up to the speed set by the “I/n
speed” parameter.
I/n lim 1 First current limit which states the Taper current curve construction.
I/n lim 2 Second current limit which states the curve construction.
I/n lim 3 Third current limit which states the curve construction.
I/n lim 4 Fourth current limit which states the curve construction.
I/n speed Threshold speed at which torque reduction starts.
In use Tcur lim
I/n lim 0
I/n lim 1
I/n lim 2
I/n lim 3
I/n lim 4
I/n speed Motor max speed
Figure 6.14.8.1 Current limitation according to the speed