Rockwell Automation FlexPak 3000 Power Module Version 4.2 - Manual (Page 169)

APPENDIX D
49’1340 e FlexPak 3000 D-I
Speed Loop and CML Block Diagrams
The following block diagrams for the speed loop and current minor loop (CML) are provided to assist the
more experienced user in using the parameters associated with the signal flow of these loops.
A brief explanation of each diagram follows.
Figure D.1 shows the drive control signals as they relate to the OIM keypad and terminal strip control
sources.
Figure D.2 presents an overview of the speed reference.
Figures D.3, D.4, and D.5 provide further detail on the Speed Reference Source Select, Speed
Reference Ramp, and the Speed Reference Mode Select blocks presented in figure D.2.
Figure D.6 shows the relationship of the speed reference to the speed feedback selection and its output
to the CML.
Figures D.7 and D.8 list all the drive test points that could source the digital, analog, frequency, and
metering outputs. It also shows software scaling (gain and zero adjustments).
Figure D.9 shows the CML reference (speed or torque) routed from the speed loop. It also shows the
regulator selection (speed/voltage or current/torque), current limits (positive and negative) and a RATE
function acting on the CML reference.
Figure D.10 shows the relationship of the CML reference to the CML feedback selection in motor
control. It also shows associated gain functions and test parameters.
Figure D.11 shows the field block.
Figure D.12 shows the outer control loop.
Figure D.13 shows the inputs on the optional I/O expansion board.
Figure D.14 shows the level detectors.
Conventions used in diagrams:
• All capitalized signals = Input Parameters [ e.g. MAXIMUM SPEED]
• All capitalized signal with parenthesis = Output Parameters [e.g. (TORQUE REFERENCE)]
• All capitalized with italic type = switch position [e.g. KEYPAD]
• An asterisk (*) - default selection