公开(公告)号：US20180175772A1

公开(公告)日：2018-06-21

申请号：US15693077

申请日：2017-08-31

Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Inventor： Alan J. Campbell ,  Chris K. Radtke ,  Jim Widen

IPC: H02P27/06 ,  H02M5/458 ,  H02M1/00

CPC classification number: H02P27/06 ,  H02M1/00 ,  H02M5/4585 ,  H02M2001/0012 ,  H02P6/04

Abstract: Control circuitry of a motor drive provides commands for operation of power structure circuitry in cooperation with peripheral circuits and devices, such as converters, inverters, feedback precharge circuits, feedback devices, interfaces, and so forth. The communications with the devices is handled by power stage circuitry configured for the caliber system. The communications between the control circuitry and the power stage circuitry is handled by a high speed interface with multiple protocols. A first of these protocols may be based on a low voltage differential signal scheme, and another on a non-differential signal scheme, such as a negative bus reference scheme. The particular protocol selected may be based on detection of a voltage of a connector pin, and the selection and implementation may be fully automated.