公开(公告)号：US20210121895A1

公开(公告)日：2021-04-29

申请号：US16949274

申请日：2020-10-22

Applicant: Graco Minnesota Inc.

Inventor： Vu K. Nguyen ,  Tom Herbert

IPC: B04B7/02 ,  H04B3/54 ,  H05K5/02 ,  B04B5/04

Abstract: Apparatus and associated methods related to providing safe electrical control and/or communication between a remote controller located in a safe location and interface system for a machine located in a hazardous location. The control and/or communication is provided via industrial-voltage power lines that traverse a barrier separating the safe location from the hazardous location. Control and/or communication is provided by reactively coupling to industrial power lines, which traverse the barrier, so as to superimpose a control and/or communication signal upon AC operating power provided to the machine. Each of the interface system located at the hazardous location and the remote control module located at a safe location provides such reactive coupling to the industrial-voltage power lines so as to communicate therebetween.

公开(公告)号：US11679395B2

公开(公告)日：2023-06-20

申请号：US16949274

申请日：2020-10-22

Applicant: Graco Minnesota Inc.

Inventor： Vu K. Nguyen ,  Tom Herbert

IPC: H04B3/54 ,  H05K5/02 ,  B04B7/02 ,  B04B5/04

CPC classification number: B04B7/02 ,  B04B5/0407 ,  H04B3/542 ,  H05K5/02

Abstract: Apparatus and associated methods related to providing safe electrical control and/or communication between a remote controller located in a safe location and interface system for a machine located in a hazardous location. The control and/or communication is provided via industrial-voltage power lines that traverse a barrier separating the safe location from the hazardous location. Control and/or communication is provided by reactively coupling to industrial power lines, which traverse the barrier, so as to superimpose a control and/or communication signal upon AC operating power provided to the machine. Each of the interface system located at the hazardous location and the remote control module located at a safe location provides such reactive coupling to the industrial-voltage power lines so as to communicate therebetween.