US 12,147,213 B2
Employing single pair ethernet for zoned safety in drive applications
Scott D. Braun, Menomonee Falls, WI (US); Roberto S. Marques, Cedarburg, WI (US); and Marius G. Chis, Cambridge (CA)
Assigned to Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US)
Filed by Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US)
Filed on Sep. 24, 2021, as Appl. No. 17/484,948.
Prior Publication US 2023/0093802 A1, Mar. 30, 2023
Int. Cl. H01H 47/00 (2006.01); G05B 19/406 (2006.01)
CPC G05B 19/406 (2013.01) [H01H 47/002 (2013.01); G05B 2219/34465 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system, comprising:
one or more drives configured to receive a first alternative current (AC) voltage from a power source and provide a second AC voltage to one or more load devices;
one or more safety relay devices configured to couple the power source to the one or more drives;
a communication device comprising a processor configured to:
receive a first dataset via an Ethernet communication protocol, wherein the first dataset comprises safety connection data indicative of one or more safety commands for controlling one or more operations of the one or more safety relay devices; and
transmit a second dataset to the one or more safety relay devices via a subnet infrastructure, wherein the second dataset comprises the one or more safety commands, wherein the subnet infrastructure comprises a plurality of conductors, wherein two of the plurality of conductors are configured to implement a single pair Ethernet (SPE) protocol.