Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 426)

426 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Appendix A PowerFlex 755 Control Block Diagrams
Figure 60 - Torque Control - Inertia Adaption
1 2 3 4 5 6
B
A
D
C
F
E
H
G
I
Limit
Pos Torque Limit
Torque Limits
Neg Torque Limit
Notch Filter
Output
X
76
705
Ine
rtia Adapt BW
Limited Trq Ref
X
70
6
InertiaAdaptGain
LP
as
s
F
ilter
T
o
tal Inerti
a
FIR
Filter
Pri
m
ar
y
Enco
de
r
Posit
ion
Ine
rtia
Adaptio
n
70
4
Filtered Trq Ref
690
689
Der
ivative
d dt
Drive Status 2
(Fd
bk Lo
ss Sw
0)
1 0
M
otor A
ccelera
tion Fe
edback
1
InAdp Ld
Obs Mo
de
1
T
o
ta
l Inertia
Sy
stem M
odel
93
6
5
709
IA LdO
bs
Delay
FIR
Filter
A lter
na
te
Enco
de
r
Po
sition
Der
ivative
d dt
0
1 Else
Sp
eed
S
en
so
r
Type
Inert
iaTrqAdd 708
Velo
city
Veloci
ty
Accel Ac
cel
0
E
lse
Senso
rless
Torque Control –
Inertia Adaption
Inertia Adaption 67
0
67
1
From Fdbk
[3E3]
[2
3H
2]
[24a E2], [24b E2]
[3
E1
]
[23H1]
***INTERNAL CONDITION ONLY***
PF
755 Rev
_10.a
Pag
e 25