Allen-Bradley PowerFlex 70 Reference Manual page 19

Analog Inputs
Analog Input Configuration
[Anlg In Config]
[Current Lmt Sel] allows an analog input to control the set point while [DC Brk
Levl Sel] allows an analog input to define the DC hold level used when
Ramp-to-Stop, Ramp-to-Hold, or Brake-to-Stop is active.
To provide local adjustment of a master command signal or to provide improved
resolution the input to analog channel 1 or 2 can be defined as a trim input.
Setting [Trim In Select] allows the selected channel to modify the commanded
frequency by ±10%. The speed command will be reduced by 10% when the input
level is at [Anlg In x Lo] with it linearly increasing to 10% above command at
[Anlg In xHi].
Feedback can be used to control an operation using the "Process PI"
(proportional-integral) feature of the control. In this case one signal, defined
using [PI Reference Sel], provides a reference command and a second, defined
using [PI Feedback Sel], provides a feedback signal for frequency compensation.
Please refer to the Process PI Loop on page 135 for details on this mode of
operation.
Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013 19