56 Rockwell Automation Publication 750-PM101B-EN-P - April 2022
Chapter 3 PowerFlex 755T Control Block Diagrams
Figure 35 - Velocity Reference Overview
1
2
3
4
5
6
BA
D
C
FHEG
I
+
VRef A
RefA Trim
RefA TrimPct
RefA Auto
+
VRef B
RefB Trim
RefB TrimPct
RefB Auto
+
ENet VRef
DPI Ports 1-6 Manual
VRef Selected
Limit
VRef Commanded
VRef
Limited
Direction
Mode
x
Vel
Comp
VRef Scale
From Position
Regulator
Limit
Accel
FF
VReg
Ref
Accel FF
to Trq Ref
Motor VRef
From
PI Regulator
(Trim Mode)
From
PI Regulator
(Exclusive Mode)
VF or SV
Droop
From
Slip Comp
Frequency
Ref
Limit
Vel Limit &
Overspeed Limit
From
PI Regulator
(Trim Mode)
Flux
Vector
Limit
Vel Limit
Vel Limit
Velocity Reference Selection
Velocity Reference Control
VRef Ramped
Limit
Switch
Control
VRef
Stop / Torque
Proving
Vector Ramp and
Move Proles
Velocity
Ramp &
Move
Proles
Virtual
Encoder
V/F Ramp S-Curve
Linear
Ramp &
S Curve
Vector Velocity Control
V/F Velocity Control
Velocity
Status
Velocity Feedback
Vector Ramp Status
FF Ramp Status
Status
VRef Ramped
Presets 3-7 Auto
From
PTP Prole
Generator
Velocity Reference Overview (VRef Overview)
Friction
Comp
Friction Comp
Torque Ref
Skip
Bands
VelRefCAM/
Proling/
Jogging/
Lift App/
Autotune/
Homing/
Overrides
Rate
Select
Ref NF 1
&
Ref NF 2
1933
VRef Final
1
Output
Frequency
Ref NF 1
&
Ref NF 2
Overview VarCtrl PFC Vector Overview PRef Move Prof Ind 2 VelRefCAM Ld Obs Cur IPM MOP Logic
Metering DroopCtrl CurPwrLmt Freq Overview PRef2 Roll Psn VRef Vect Friction Comp Proc 1 22Series IO Digital Invert
PLL DBC CurrCtrl CBI Metering PReg Spindle Ref Move Trq RefCAM Proc 2 22Series IO Digital Motor I2T
PwrLoss VoltRefGen LscCtrlCfg Fdbk Psn PLL VRef Overview VReg Vect Trq Ref AntiSway 11-Series IO Digital High Speed Wizard
LscData VoltCtrl DriveDerating Homing Psn CAM VRef Sel Trq Overview Trq Filt Oil Well 1 22-Series IO Analog
CurRefGen DCBusObs PRef1 Prof Ind 1 VRef All Trq Ref Sel Cur IM SPM Oil Well 2 22-Series IO Analog VRef Overview
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