Safety relays
ReLy

The safety relay for high ease of use

Your Benefits

Reduce commissioning work thanks to quick installation and wiring with a single front connector
Quick module exchange thanks to the simple one-click mounting rail release
Significant space savings in the control cabinet with a 20% thinner housing compared to the predecessor version
Design machines more compactly and benefit from faster processes thanks to short response times and reduced safety distances
Increase machine availability with comprehensive diagnostic options
Long service life even in highly dynamic processes with many switching cycles

Overview

The safety relay for high ease of use

High ease of use, more space in the control cabinet, quicker production starts, more compact machines with shorter safety distances and reduced downtime: With the clever ReLy safety relay, you get even more out of your application, and that with high safety at performance level e. So don’t rely on just any safety relay – use the ReLy from SICK. Thanks to clearly defined areas of application, selecting the right variant is simple as can be.

At a glance

Clever, user-friendly housing functions
Thin design with construction widths from 18 mm
Fast response times of under 10 ms (depending on the type)
Status LEDs and diagnostic interfaces
Variants for universal application and for safe series connection with Flexi Loop available

Functional safety

Boost your productivity - with safety solutions from SICK

Advantages

Easy handling, efficient operation

You can always relay on the ReLy. Thanks to its clever functions, it provides more efficiency in a simple way. You benefit from fast production startup, reduced downtime and more compact machine designs.

The thin, user-friendly housing ensures space- and cost-efficient installation and commissioning

Quick troubleshooting and restart of your application thanks to diagnostic LEDs as well as controllable lamps and reset pushbuttons

More compact machine designs and faster processes as a result of shorter response times and reduced safety distances

With the ReLy, you get more out of your applications thanks to the high level of usability.

Versatile application, simple selection

From the simple evaluation of a safety light curtain to time-delayed switching: The ReLy has the right variant for any requirement and can thereby be used in nearly any of your applications. This means you can remain flexible in your operations and rely on productivity-enhancing safety concepts from SICK.

Safety sensors of any kind can be monitored with a high level of safety in a wide variety of applications

The RLY3-LOOP1 in combination with the Flexi Loop ensures safe and cost-efficient series connection of safety sensors

The RLY3-MULT1 multifunctional relay can be configured using DIP switches and is also suitable for complementary safety sensors

The ReLy offers you the right safety relay for any application.

Applications

Technical overview

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Technical data overview

Safety level	PL e, SIL3
Applications	Evaluation unit Output expansion module for OSSDs Evaluation unit for stop category 1 applications
Compatible sensor types	Safety sensors with potential-free outputs Two-hand controls Type III C, in accordance with EN 574 Flexi Loop safe series connection Safety sensors with OSSDs Safety sensors with test input Safety pressure mats
Enabling current paths	2 3 4 2+1
Sensor monitoring	Discrepancy monitoring Cross-circuit detection Sequence monitoring
Typical response time	10 ms 12 ms 79 ms
Configuration method	Hard wired DIP switch
Housing width	18 mm 28 mm