Rockwell Automation FlexPak 3000 Drive Field Current Regulator Kit, 911FK0041, 911FK0101, 911FK015 - Manual (Page 40)

A-4 FlexPak 3000 Field Current Regulator Installation Instructions
Field Current Feedback Scaling
There are three Field Current Regulator ratings: 4 amps, 10 amps, and 15 amps. The
Regulator board hardware provides three different gains for the field current feedback
signal: 1, 2, and 5. The user must enter the motor nameplate value for rated field
amps (
MOTOR HOT FLD AMPS ) to properly scale the feedback signal. The software will
automatically select the feedback gain (in hardware) which produces the largest full
scale digital value in the analog-to-digital converter.
MOTOR HOT FLD AMPS will be
limited based on the rating of the Field Current Regulator kit installed. Table A.1 shows
what the software will select as the feedback gain depending on motor hot field amps.
Figure A.2 – Drive Operation Over the Constant Torque and Constant Power Range
Table A.1 – Field Current Feedback Scaling
Filed Current
Rating (Amps)
Motor Hot Field
Amps Gain
Rated Output
(Amps)
Field Current
Resolution
(milliamps)
4 0.11 to 0.8
0.81 to 2.00
2.01 to 4.00
5
2
1 0.8
2
4
4
10
20
10 0.28 to 2.00
2.01 to 5.00
5.01 to 10.00
5
2
1 2
5
10
10
25
50
15 0.55 to 4.00
4.01 to 10.00
10.1 to 20.00
5
2
1 4
10
15
20
50
100