NORD Drivesystems BU0200 - Manual (Page 190)

6 Parameterisation
BU 0200 GB-4411 Subject to technical alterations 189
Parameter
{Factory setting}
Setting value / Description / Note Device Supervisor Parameter set
P311
Speed Ctrl I
(Speed controller I)
S P
0 ... 800 % / ms
{ 20 }
I-component of the encoder (Integration component).
The integration component of the controller completely eliminates any control deviation. The
value indicates how large the setpoint change is per ms. Values that are too small cause the
controller to slow down (reset time is too long).
P312
Torque curr. ctrl. P
(Torque current controller P)
S P
0 ... 800 %
{ 200 }
Current controller for the torque current. The higher the current controller parameters are set,
the more precisely the current setpoint is maintained. Excessively high values in P312 generally
lead to high-frequency oscillations at low speeds; on the other hand, excessively high values in
P313 generally produce low frequency oscillations across the whole speed range.
If the value "Zero" is entered in P312 and P313, then the torque current control is switched off.
In this case, only the motor model precontrol is used.
P313
Torque curr. ctrl. I
(Torque current controller I)
S P
0 ... 800 % / ms
{ 125 }
I-component of the torque current controller. (See also P312 >Torque current controller P<)
P314
Torq. curr. ctrl. limit
(Torque current controller limit)
S P
0 ... 400 V
{ 400 }
Determines the maximum voltage increase of the torque current controller. The higher the
value, the greater the maximum effect that can be exercised by the torque current controller.
Excessive values in P314 can specifically lead to instability during transition to the field
weakening zone (see P320). The values for P314 and P317 should always be set roughly the
same, so that the field and torque current controllers are balanced.
P315
Field curr. ctrl. P
(Field current controller P)
S P
0 ... 800 %
{ 200 }
Current controller for the field current. The higher the current controller parameters are set, the
more precisely the current setpoint is maintained. Excessively high values for P315 generally
lead to high frequency vibrations at low speeds. On the other hand, excessively high values in
P316 generally produce low frequency vibrations across the whole speed range If the value
"Zero" is entered in P315 and P316, then the field current controller is switched off. In this case,
only the motor model precontrol is used.
P316
Field curr. ctrl. I
(Field current controller I)
S P
0 ... 800 % / ms
{ 125 }
I-component of the field current controller. See also P315 >Field current controller P<
P317
Field curr. ctrl. lim.
(Field current controller limit)
S P
0 ... 400 V
{ 400 }
Determines the maximum voltage increase of the torque current controller. The higher the
value, the greater is the maximum effect that can be exercised by the field current controller.
Excessive values in P317 can specifically lead to instability during transition to the field
reduction range (see P320). The values for P314 and P317 should always be set roughly the
same, so that the field and torque current controllers are balanced.