WEG CFW-09 - General Enable

146
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
P175
(5)
0.0 to 31.9
ProportionalGain of
[ 2.0 ]
the Flux Regulator
0.1
P176
(5)
0.000 to 9.999
Integral Gain of
[ 0.020 ]
the Flux Regulator
0.001
Range
[Factory Setting]
Parameter
Unit
Description / Notes
P175 and P176 are automatically set as a function of parameter P412.
In general the automatic setting is adequate and there is no need for a
reconfiguration.
These gains shall only be manually reconfigured when the excitation
current signal (id*) is oscillating and compromising system operation.
P177 and P179
are active only when
P202 = 3 (Sensorless
Vector)
P177
0 to 120
Minimum Flux
[ 0 ]
1 %
P178
0 to 120
Rated Flux
[ 100 ]
1 %
P179
0 to 120
Maximum Flux
[ 120 ]
1 %
Parameters P177 and P179 define the output limits of the flux regulator
in the Sensorless Vector Control.
NOTE!
The excitation current (id*) may be unstable in case of P175 > 12.
Note
: (id*) can be observed at analog outputs AO3 and /or AO4 by
setting P255 = 14 and / or P257 = 14, or at P029 and / or P030.
NOTE!
These parameters shall not be changed.
P178 is the flux reference to both Vector controls (Sensorless and with
Encoder).
P180
0 to 120
Starting Point of the
[ 95 ]
Field Weakening
1 %
Region
These para-
meters (P175, P176,
P178
and
P180) are
shown
on the
display(s)onlywhen
P202 = 3 or 4 (Vector
Control)
This parameter is representedas a percentage of themotor rated speed
(P402) and defines the speed where the field weakening region of the
motor starts.
If the inverter is operating inVector Control andthe motor is not reaching
its rated speed, itispossible to graduallyreduce thevalue of parameters
P180 and/or P178 until it works appropriately.
P181
(1)
0 or 1
Magnetization Mode
[ 0 ]
-
This parameter
is shown on the
display
only when
P202 = 4 (Vector
Controlwith Encoder)
Insensorlessvector, magnetizationcurrentispermanentlyON.Todisable
magnetization current when the motor is stopped, program P211 to 1
(ON). This canbe givena time delaybyprogramming P213 greater than
zero.
Table 6.12 -
Magnetization mode
P181
0
1
Action
It applies magnetization current after
General Enable ON
It applies magnetization current after
Start/Stop ON
Function
General Enable
Start/Stop