Reference control sources, Auto” speed sources, Manual” speed sources – Rockwell Automation 20D PowerFlex 700H and 700S Frame 9...14 Drives User Manual

Page 40: Changing speed sources

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Rockwell Automation Publication PFLEX-IN006E-EN-P - July 2013

Chapter 2

Control Wiring for PowerFlex 700H Drives

Reference Control Sources

“Auto” Speed Sources

The drive speed command can be obtained from a number of different sources.
The source is determined by drive programming and the condition of the Speed
Select digital inputs, Auto/Manual digital inputs or reference select bits of a
command word.

The default source for a command reference (all speed select inputs open) is the
selection programmed in parameter 90 [Speed Ref A Sel]. If any of the speed
select inputs are closed, the drive will use other parameters as the speed command
source.

“Manual” Speed Sources

The manual source for speed command to the drive is either the HIM requesting
manual control or the control terminal block (analog input) if a digital input is
programmed to “Auto/Manual.”

Changing Speed Sources

The selection of the active Speed Reference can be made through digital inputs,
DPI command, jog button or Auto/Manual HIM operation.

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