NORD Drivesystems BU0500 - Manual (Page 90)

SK 500E – Users Manual for Frequency Inverters
90 BU 0500 GB-1013
P320
Field weakening limit
(Field weakening limit)
S P
0 ... 110 %
{ 100 }
The field weakening limit determines at which speed / current the controller will begin to weaken
the field. At a set value of 100% the controller will begin to weaken the field at approximately the
synchronous speed.
If values much larger than the standard values have been set in P314 and/or P317, then the field
weakening limit should be correspondingly reduced, so that the control range is actually available
to the current controller.
Pos : 160 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P300-P399/ Paramet er P321 – Dr ehzahlregler I Lüftz eit @ 0\ mod_1327677231913_388. doc x @ 8796 @ @ 1
P321
Speedctr. I Release time
(Speed controller I brake release time)
S P
0 ... 4
{ 0 }
During the brake release time (P107/P114), the I-component of the speed control is increased.
This leads to better load take-up, especially with vertical movements.
0 = P311 x 1
1 = P311 x 2
2 = P311 x 4
3 = P311 x 8
4 = P311 x 16
Pos : 161 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P300-P399/ Paramet er P325 – Funkti on Drehgeber @ 0\ mod_1327677283553_388. doc x @ 8819 @ @ 1
P325
Rotary encoder function
(Rotary encoder function)
0 ... 4
{ 0 }
The actual speed list value supplied by an incremental encoder to the FI can be used for various
functions in the FI.
0 = Speed measurement Servo mode, "Servo mode speed measurement": The actual
motor speed list value is used for the FI servo mode. The ISD control cannot be switched
off in this function.
1 = PID actual frequency value: The actual speed of a system is used for speed control.
This function can also be used for controlling a motor with a linear characteristic curve. It
is also possible to use an incremental encoder for speed control which is not mounted
directly onto the motor. P413 – P416 determine the control.
2 = Frequency addition: The determined speed is added to the actual setpoint value.
3 = Frequency subtraction: The determined speed is subtracted from the actual setpoint.
4 = Maximum frequency: The maximum possible output frequency / speed is limited by the
speed of the encoder.
Pos : 162 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P300-P399/ Paramet er P326 – Dr ehg eber Ü bers etz ung @ 0\ mod_1327677354896_388. doc x @ 8842 @ @ 1
P326
Ratio encoder
(Encoder transformation ratio)
0.01 ... 100.00
{ 1.00 }
If the incremental encoder is not mounted directly onto the motor shaft, then the respectively
correct transformation ratio of motor speed to encoder speed must be set.
speed Encoder
speed Motor
P326
=
Only when P325 = 1, 2, 3 or 4, therefore not in Servo mode (motor speed control)
Pos : 163 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P300-P399/ Paramet er P327 – Sc hleppfehl er Drehz ahlregl er @ 0\ mod_1327677406270_388. doc x @ 8865 @ @ 1
P327
Speed slip error
(Speed slip error, speed control)
0 ... 3000 rpm
{ 0 }
The limit value for a permitted maximum slip error can be set. If this value is reached, the FI
switches off and indicates error E013.1.
0 = OFF
Only when P325 = 0, therefore in Servo mode (motor speed control)
Pos : 164 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P300-P399/ Paramet er P328 – Verzöger ung Sc hleppf ehl er @ 0\ mod_1327677464020_388. doc x @ 8888 @ @ 1