Allen-Bradley Guardmaster 440C-CR30-22BBB - Product Overview

Rockwell Automation Publication 440C-WD001C-EN-P - June 2015 45
Chapter 8
Single-wire Safety
This example application focuses on the single-wire safety (SWS) feature built
into the CR30 safety relay. The CR30 safety relay has two input terminals that
can be configured to use single wire safety and two output terminals that can be
configured to use single wire safety.
Products that have single-wire safety outputs can be connected to the inputs of
t
he
CR30 safety relay. This application example shows a CR30 safety relay and SI
as the single-wire safety inputs of a CR30 safety relay. On the output side, the
CR30 safety relay is driving another CR30 safety relay and an EM relay using the
single-wire safety output.
Two SensaGuard™ non-contact switches with integrated latch are included in the
examp
le to show that the SWS signals can be incorporated into the logic
performed by the CR30 safety relay.
Product Overview
Figure 28 - Overview