Allen-Bradley PowerFlex 70 Reference Manual page 148

Process PI Loop
148
For example, winders using torque control rely on PD control not PI control.
Also, [PI BW Filter] is useful in filtering out unwanted signal response in the PID
loop. The filter is a Radians/Second low pass filter.
Percent of Reference
124 [PI Configuration]
Sets configuration of the PI regulator.
x x x x x x
15 14 13 12 11 10
Bit #
Factory Default Bit Values
When using Process PID control the output can be selected as percent of the
Speed Reference. This works in Speed trim mode only, not in Torque Trim or
Exclusive Mode.
Example
% of Ref selected, Speed Reference = 43 Hz, PID Output = 10%, Maximum
Frequency = 130 Hz. 4.3 Hz will be added to the final speed reference.
% of Ref not selected, Speed Reference = 43 Hz, PID Output = 10%, Maximum
Frequency = 130 Hz. 13.0 Hz will be added to the final speed reference.
Scale Blocks with PID
Scale Blocks are now included in the Reference and Feedback selections of the
Process PID controller. This selects the output of the scale block for use as
Reference or Feedback to the Process PID.
126 [PI Reference Sel]
Selects the source of the PI reference.
(1)
Vector firmware 3.001 and later.
Trim % of Reference
The Trim function of the drive can be selected as % of Reference or % of
Maximum Frequency.
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013
1 =Enabled
0 0 0 0 0 0 0 0 0 0
0 =Disabled
9 8 7 6 5 4 3 2 1 0
x =Reserved
* Vector Control Option Only
** Vector firmware 3.001 & later
Default: 0 "PI Setpoint"
Options: 0 "PI Setpoint"
1 "Analog In 1"
2 "Analog In 2"
3-6 "Reserved"
7 "Pulse In"
8 "Encoder"
9 "MOP Level"
10 "Master Ref"
11-1 "Preset Spd1-7"
7 "DPI Port 1-5"
18-2 "Reserved"
2 "Scale Block 1"
23-2 "Scale Block 2"
4 "Scale Block 3"
25 "Scale Block 4"
26
27
28
124
thru
138
024
124
thru
138
(1)
(1)
(1)
(1)