Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 384)

384 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Appendix A PowerFlex 753 Control Block Diagrams
Figure 20 - Torque Control - Current (IPM)
1 2 3 4 5 6
B
A
D
C
F
E
H
G
I
Power
Unit
Thermal Prot
ec
tio
n
Pos Torque Limit
{Trq Ne
g Lmt}
Neg Torque Limit
{T
rq Pos
Lmt}
Rege
n Po
wer
L
m
t
{Regen PwrLm
t}
Bus
Re
gula
to
r
Calc Pwr
Te
Active Vel Fdbk
A
ctive Po
s
T
orque Li
mit
Ac
tive Ne
g
Torq
ue Limi
t
Limit
Max Min
Filtered Trq
Ref
Limi
ted Trq Re
f
Active Cur Lmt
Limit
Motor Power Lmt
{M
trng Pw
rLmt}
Vo
ltage R
ef/
Lim
it
G
enerati
on
Current Lmt 1
Current Lmt Sel
Cur
rent Lmt 2
Ther
mal M
gr Cur
rent Lim
it
42
4
42
1
422 423
690
689
+
+
131 426 427 67
1
67
0
945
21
At Limit Status
22
Trq Pos
Lmt
Trq Neg
Lm
t
945
17
At Limit Status
18
Trq
CurPos
Lmt
Trq
CurNeg
Lmt
Flux Vector
Param
eter
Select
ion
From Fdbk
[3F2]
[30D2]
From Torq
Ctrl
[1
7H2]
[3C6]
-1
23 24
Mtr
ng Pwr
Lmt
Rege
n PwrL
mt
25 26
C
ur Lm
t FV
T
herm R
egLmt
27 28
BusVltg
FVLmt
M
tr Vlt
g Lkg
{Bus
VltgFV
Lmt}
{Mtr V
ltg Lkg}
{C
ur Lm
t FV}
{Ther
m Reg
Lmt}
PF75
3 Rev_
10.a
Page 18b
Iq
Current
Re
f
Id
Current
Re
f
Te
Id
Calc
Vo
lta
ge
Li
mit
Te
Iq
Ca
lc
Id
Rate
Lim
Current Rate Lmt
425
Limit
Calc
Is,Id
Iq
Torque Control –
C
urrent
Interior Permanent Ma
gnet motor (IPM)