Rockwell Automation 20B PowerFlex 70, PowerFlex 700 Reference Manual - Manual (Page 45)

Block Diagrams
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013 45
Figure 2 PowerFlex 700VC Block Diagrams (2)
P
o
werFle
x 700VC
Bloc
k Diag
rams
Read Only P
a
rameter
Read /
Wr
ite P
a
ra
meter
Read Only P
a
rameter with Bit En
umer
ation
Read /
Wr
ite P
a
rameter with Bit En
umer
ation
Pro
vides additional inf
or
mation
Read
T
estpoint with Data Select
V
alue
Encoder
PI Excl Mode
PI Regulator
446 445
Kp Speed Loop Ki Speed Loop
25
Speed F
eedbac
k
(F
rom Encoder) Speed Contr
ol - Regulator (1.0ms)
Speed Ref
erence
449
Speed Desired BW
23
447
Kf Speed Loop
V/Hz
Current
Processing
Motor
+
Slip Comp
Output F
req
80
Open Loop
310
Limit
1.5*Rated Slip
23
1
Speed Ref
erence
F
eedbac
k Select
V/Hz Mode with Speed Contr
ol
Linear
Ramp & S Cur
v
e
Min/Max
Limits
Commanded Speed
2
Speed Ref Selection
Speed Ref A Sel
117 90 93
+
Analog 1/2 Enc/Pulse
MOP
Presets 1-7 DPI P
o
rt
1-6
Spd Ref A Spd Ref B
Tr
im
S O U R C E S
+
Speed Ref B Sel
T
rim In Select
272
2
Commanded F
req
Dr
iv
e Ref Rslt
22 273
Ramped Speed Dr
iv
e Ramp Rslt
+
Logic
1 0 0 1
Speed Control - Ref
erence (2.0ms)
Logic
1 0 0 1
100 108
Jog Speed 1 Jog Speed 2
PI Regulator
PI Ref
erence
PI F
eedbac
k
Limit
Process Control (2ms)
138
PI Output Meter
Logic
1 0 0 1