GE Industrial Solutions DV-300 DC Drive Users Manual - Manual (Page 162)

GEI-100332Ga
——— FUNCTION DESCRIPTION ———
6
34
Fwd-Rev spd tune Direction of motor shaft rotation for the speed self tune test (Forward or Reverse; For-
ward is clock-wise as seen from shaft drive end).
Test T curr lim Torque current limit applied during Speed self tune test.
Start Start-up speed self tune.
Inertia Inertia value in Kg*m 2 (1 Kg*m 2 = 23.76 lb*ft 2 ).
Inertia Nw New Inertia value in Kg*m 2 identified during the speed self tune procedure.
Friction Friction value (or Loss compensation) in N*m (1 N*m = 0.738 lb*ft).
Friction Nw New Friction value (or Loss compensation) in N*m identified during the speed self tune
procedure.
Speed P Proportional coefficient of the speed regulator in percentage.
Speed P Nw New value of Proportional coefficient of the speed regulator in percentage computed
during the speed self tune procedure.
Speed I Integral coefficient of the speed regulator in percentage.
Speed I Nw New value of Integral coefficient of the speed regulator in percentage computed during
the speed self tune procedure.
Take val Acquire the parameters after the speed self tune procedure (overwrite current values).
Note! This is not a permanent save. Go to “Save parameters” command.
6.7.2 Spd zero logic
0 t
&
&
&
>=
>
=
&
>=
Lock speed I
Lock speed I
Ref 0 level
Speed zero
Speed
Ramp ref / Speed ref
T
T
T
Spd=0 P gain
10 %
Ref 0 level
10 rpm
Speed zero delay
100 ms
Enable spd=0 I
Enable spd=0 P
Enable spd=0 R
Figure 6.7.2.1: Speed zero logic
SPEED REGULAT
Spd zero logic
[123] Enable spd=0 I
[124] Enable spd=0 R
[125] Enable spd=0 P
[126] Spd=0 P gain [%]
[106] Ref 0 level [FF]
The speed zero logic determines the behavior of the drive when the motor shaft is at a stop.