Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 189)

Chapter 7
Programming Parameters
7-23
Parameter 118 – Field Current Feedback [Fld Current Fdbk]
Internal units : 4096 = 1000h = 1 pu = 100% rated motor field current
Programming Terminal units: Amps
Description : This parameter indicates the latest field current
feedback value as measured by the drive.
Parameter 119 – Process Trim Output [Proc Trim Output]
Internal units : 4096 = 1000h = 1 pu
Programming Terminal units: None
Description : This parameter represents the scaled and limited output
of the process trim function. The Process trim consists of a general
purpose PI regulator that uses reference and feedback inputs
(Parameters 161 and 162). The number contained in this parameter
may also be used to offset the velocity or torque reference by making
the appropriate selection in Process Trim Select (Parameter 628).
Parameter 120 – CEMF Feedback [CEMF FEEDBACK]
Internal units : 4096 = 100% rated motor voltage
Programming Terminal units: Volts
Minimum Value: N/A
Maximum Value: N/A
Default Value: N/A
Function: Software Test Point
Description : This is the value of CEMF used as a feedback value for
the CEMF PI regulator in the drive. It is calculated by subtracting the
motor IR drop from the actual Armature Voltage Feedback. The
Armature Resistance, Parameter 614, is used to calculate the motor IR
Drop.
Parameter 121 – Flux Trim [FLUX TRIM]
Internal units : 4096 = 100% rated motor voltage
Programming Terminal units: %
Minimum Value: N/A
Maximum Value: N/A
Default Value: N/A
Function: Software Test Point
Description : This is the value of Field Flux Trim from the output
CEMF regulator in the Drive.