NORD Drivesystems BU0505 User Manual

Page 94

SK 54xE – Users Manual for Frequency Inverters

BU 0505 GB-1013

P317

Field current controller limit

(Field current controller limit)

0 ... 400 V

{ 400 }

Determines the maximum voltage increase of the field 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.

Pos : 157 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P300-P399/ Paramet er P318 – Fel dsc hwäc hregl er P @ 0\ mod_1327592793650_388. doc x @ 8722 @ @ 1

P318

Field weakening controller P

(Field weakening controller P)

0 ... 800 %

{ 150 }

The field weakening controller reduces the field setpoint when the synchronous speed is
exceeded. Generally, the field weakening controller has no function; for this reason, the field
weakening controller only needs to be set if speeds are set above the nominal motor speed.
Excessive values for P318 / P319 will lead to controller oscillations. The field is not weakened
sufficiently if the values are too small or during dynamic acceleration and/or delay times. The
downstream current controller can no longer read the current setpoint.

Pos : 158 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P300-P399/ Paramet er P319 – Fel dsc hwäc hregl er I @ 0\ mod_1327677030485_388. doc x @ 8750 @ @ 1

P319

Field weakening controller I

(Field weakening controller I)

0 ... 800 % / ms

{ 20 }

Only affects the field weakening range, see P318 >Field weakening controller P<

Pos : 159 /Anleit ungen/5. / 6. Parametrier ung [BU 0500 / BU 0200]/ Par ameter/ P300-P399/ Paramet er P320 – Grenz e F elds chwäc hregler @ 0\ mod_1327677173911_388. doc x @ 8773 @ @ 1

P320

Field weakening limit

(Field weakening limit)

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)

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