5 Parameter
BU 0200 en-US-4920
163
Pos : 408 /Anleit ungen/El ektr onik /FU und St art er/5. Par ameter/ Par ameter auflist ung (P000 .. .)/P300- P399/Param et er P331 – Umsc halt frequenz CFC ol @ 21\mod_1524149856108_14638. doc x @ 2417510 @ @ 1
P331
Switch over freq. CFC ol
(Switch over frequency CFC open-loop)
S
P
(Former designation: "
Switch over freq. PMSM
")
5.0 ... 100.0 %
{ 15.0 }
Definition of the frequency from which the control method of a PMSM (permanent-magnet
synchronous motor) is activated according to (P300) in operation without encoder. In this case,
100% corresponds to the rated motor frequency from (P201).
The parameter is only relevant for the control method "CFC open-loop" (P300, setting "2").
Pos : 409 /Anleit ungen/El ektr onik /FU und St art er/5. Par ameter/ Par ameter auflist ung (P000 .. .)/P300- P399/Param et er P332 – Hyst erese Umschalt frequenz CFC ol @ 21\mod_1524211317202_14638.docx @ 2417550 @ @ 1
P332
Hyst. Switchover CFC ol
(Switchover frequency hysteresis CFC open-
loop)
S
P
(Former designation: "
Hyst. Switchover PMSM
")
0.1 ... 25.0 %
{ 5.0 }
Difference between the switch-on and switch-off point in order to prevent oscillation in the
transition from operation without encoder to the control method specified in (P330) (and vice
versa).
Pos : 410 /Anleit ungen/El ektr onik /FU und St art er/5. Par ameter/ Par ameter auflist ung (P000 .. .)/P300- P399/Param et er P333 – Flus s-Rück koppl ung CFC ol @ 21\m od_1524211608766_14638. docx @ 2417586 @ @ 1
P333
Flux feedback CFC ol
(Flux feedback CFC open-loop)
S
P
(Former designation: "
Flux feedb. fact. PMSM
")
5 ... 400 %
{ 25 }
This parameter is necessary for the position monitor in CFC open-loop mode. The higher the
value selected, the lower the flux error from the rotor position monitor. However, higher values
also limit the lower limit frequency of the position monitor. The greater the feedback amplification
selected, the higher the limit frequency and the higher the values that must be set in (P331) and
(P332). This conflict of objectives therefore cannot be resolved simultaneously for both
optimization objectives.
The default value is selected so that it typically does not need to be adjusted for NORD IE4
motors.
Pos : 411 /Anleit ungen/El ektr onik /FU und St art er/5. Par ameter/ Par ameter auflist ung (P000 .. .)/P300- P399/Param et er P334 – G eberoffs et PM SM @ 0\mod_1327678017910_14638.docx @ 14961 @ @ 1
P334
Encoder offset PMSM
(PMSM encoder offset)
S
-0,500 ... 0.500 rev
{ 0,000 }
Evaluation of the zero track is needed to operate PMSMs (permanent-magnet synchronous
motors). The zero pulse is then used to synchronize the rotor position. Set parameter (P330) to
"0" or "1".
The value to be set for parameter (P334) (offset between zero pulse and actual rotor position
"zero") must be determined experimentally or included with the motor.
A sticker is typically affixed to motors supplied by NORD on which the setting is specified.
If the information on the motor is specified in
°
, this must be converted to
rev
(e.g. 90° =
0.250 rev).
Pos : 412 /Anleit ungen/El ektr onik /FU und St art er/5. Par ameter/ Par ameter auflist ung (P000 .. .)/P300- P399/Param et er P334 – G eberoffs et PM SM - Hinw eis N ulls pur [SK 2xx E] @ 6\m od_1429080221496_14638. docx @ 212028 @ @ 1
Note
– The zero track is connected via
digital input 1
.
– Set parameter P420 [-01] to function
43
"0 track HTL encoder DI1" in order to evaluate the
pulses of the zero track.
Pos : 413 /Allgem ein/ Allgem eingültig e Module/---------Seitenumbr uc h k ompakt --------- @ 13\m od_1476369695906_0. doc x @ 2265496 @ @ 1
