Rockwell Automation 20D PowerFlex 700S Drive Ph I Control, Frames 1...11 - Manual (Page 75)

Programming and Parameters 3-21
90 Spd Reg BW
Sets the bandwidth of the speed regulator in rad/sec. Bandwidth is also referred to as the
crossover frequency. Small signal time response is approximately 1/BW and is the time to
reach 63% of set point. A change to this parameter will cause an automatic update of Pars 81
[Spd Reg P Gain] and 82 [Spd Reg I Gain]. To disable the automatic gain calculation, set this
parameter to a value of zero.
Adjustments to Par 474 [Freq Reg We BW] and Par 475 [Freq Reg Wr BW] may be
necessary when using sensorless feedback.
Units:
Default:
Min/Max: R/S
10.0000
0.0000/500.0000
Min/Max limited by AutoTune
calculations.
✓ ✓ Real
91 Spd Reg Damping
Sets the damping factor of the drive's characteristic equation and factors in the calculation of
the integral gain. A damping factor of 1.0 is considered critical damp. Lowering the damping
will produce faster load disturbance rejection, but may cause a more oscillatory response.
When Par 90 [Spd Reg BW] is set to zero, damping factor has no effect.
Default:
Min/Max: 1.0000
0.5000/3.0000 ✓ ✓ Real
92 SpdReg P Gain Mx
Places a limit on the maximum value of proportional gain in Par 81 [Spd Reg P Gain]. When
gains are automatically calculated, this parameter is necessary to limit the amplification of
noise with increased inertia.
Default:
Min/Max: 100.0000
0.0000/600.0000 ✓ ✓ Real
93 SRegFB Filt Gain
Sets the lead term for the speed feedback filter. A value greater than 1 will result in a lead
function and a value less than 1 will result in a lag function. A value of 1 will disable the filter.
Default:
Min/Max: 1.0000
-5.0000/20.0000 ✓ ✓ Real
94 SReg FB Filt BW
Sets the frequency for the Speed feedback filter.
Units:
Default:
Min/Max: R/S
35.0000
0.0000/3760.0000 ✓ ✓ Real
95 SRegOut FiltGain
Sets the lead term for the Speed Regulator output filter. A value greater than 1 will result in a
lead function and a value less than 1 will result in a lag function. A value of 1 will disable the
filter.
Default:
Min/Max: 0.7000
-/+5.0000 ✓ ✓ Real
96 SReg Out Filt BW
Sets the frequency for the Speed Regulator output filter.
Units:
Default:
Min/Max: R/S
30.0000
0.0000/3760.0000 ✓ ✓ Real
97 Act Spd Reg BW
Displays the actual speed regulator bandwidth or crossover frequency. The value represents
the bandwidth in Par 90 [Spd Reg BW] after the maximum bandwidth limits have been
applied.
Units:
Default:
Min/Max: R/S
10.0000
0.0000/500.0000 Real
98 Spd Gain TP Sel
Enter or write a value to select the speed gain data displayed in Par 99 [Spd Gain TP Data].
Default:
Options: 0
0
1
2
3
4
5
6
7
8
9
10
11 “Zero”
“Zero”
12 “I Rate Limit”
“Iq Rate BW” 13 “I RtLim Stat”
“Reserved” 14 “PGain Max”
“PGain Max BW” 15 “GnMx LimStat”
“BW Limit”
16 “Damping”
“InertiaMaxBW” 17 “Dmp Lim Stat”
“BW Lim Stat”
18 “Reserved”
“BW Select” 19 “Srls KpMxBW”
“Totl Inertia” 20 “Srls BWLimit”
“TI Lim Stat” 21 “SrlsInrtMxBW”
“Mtr Inertia” 22 “SrlsBWSelect”
“M InrtLStat” 23 “Srls BW Calc”
24 “Snsr BW Calc”
99 Spd Gain TP Data
Displays the value selected by Par 98 [Spd Gain TP Sel].
Default:
Min/Max: 0.0000
0.0000/500.0000 Real
100 Speed Error
The error (difference) between the motor speed reference (+) and the filtered motor speed
feedback (-).
Units:
Default:
Min/Max:
Comm Scale: RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0 Real
101 SpdReg Integ Out
The output value of the Speed Regulator Integral channel.
Units:
Default:
Min/Max:
Comm Scale: P.U.
0.0000
-/+8.0000
1.0 PU Torque Real
102 Spd Reg Pos Lim
Sets the positive limit of the Speed regulator output value. The output of the Speed regulator
is limited by adjustable high and low limits.
Units:
Default:
Min.Max:
Comm Scale: P.U.
3.0000
0.0000/6.0000
Par 4 [Motor NP RPM] = 1.0 ✓ ✓ Real
103 Spd Reg Neg Lim
Sets the negative limit of the Speed regulator output value. The output of the Speed
regulator is limited by adjustable high and low limits.
Units:
Default:
Min/Max:
Comm Scale: P.U.
-3.0000
-6.0000/0.0000
Par 4 [Motor NP RPM] = 1.0 ✓ ✓ Real
104 SrLss Spd Reg Kp
Sets the proportional gain of the speed regulator when sensorless motor speed feedback is
used. Value is automatically calculated based on the bandwidth set in Par 106 [Srlss Spd
Reg BW]. Proportional gain may be manually adjusted by setting Par 106 to zero. This gain
setting has no units (per unit torque) / (per unit speed error).
Default:
Min/Max: 8.0000
0.0000/200.0000 ✓ Real
No.
Name
Description
Values Li
nkab
le
Read
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it
e
Da
ta
T
ype