Rockwell Automation 20P PowerFlex Digital DC Drive - Manual (Page 322)

322 Rockwell Automation Publication 20P-UM001I-EN-P - February 2013
Appendix D Control Block Diagrams
Droop Compensation - Inertia / Loss Compensation
Droop Compensation
P2
36
Spd
Re
g Out Pc
t
-
+
low
pa
ss fil
ter
P6
98
Load Comp
P7
00
Droop Limit
P6
97
Droop Filter
P6
96
Droop Pe
rcent
To Sp
eed R
egu
lato
r
Droop Compensation
Output
From Digital
Setting or
Analog Input
Inertia/Loss Compensation
n
d
P1
06
Ref Zero Le
ve
l
P1
01
2
Ine
rt
ia C Fil
te
r
low
pa
ss fil
ter
P5
00
Spee
d
P1
014
Inertia
P1
01
5
Fric
tion
+
1
P1
01
3
Torque Const
P11
8
Spe
ed Reg I
n
To Sp
eed R
egu
lato
r
Inertia/Loss Compensation
Output
P46
2
Fl
ux Div
ide
0
Ine
rt
ia Comp
Torque Ref
Σ
Ine
rtia Compens
ation is divided by
the flux reference when P462 [Flux Divide] is set to 1 “Inertia Comp”.
Flux Ref Pct
(2 ms)
(2 ms)
1
1.00
P7
0
A
nlg In1
Sel
P7
5
A
nlg In2
Sel
P8
0
A
nlg In3
Sel
P7
82
PID Target P1
210
W Target