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Last updateMon, 19 Mar 2018 5am

Flexible Relay Solution by Rockwell Automation simplifies Safety Implementation

The Guardmaster® 440C-CR30 Software Configurable Safety Relay is flexible, cost-effective, and easy to use. This relay is ideal for applications requiring as many as nine dual-channel safety circuits and controlling as many as five output zones. You can configure this relay using the Connected Components Workbench™ software.

Machine builders can now easily implement required safety functions while improving productivity with the Allen-Bradley Guardmaster 440C‑CR30 safety relay from Rockwell Automation.

Users can program the safety relay through the free Connected Components Workbench software from Rockwell Automation. Connected Components Workbench software reduces programming time and helps increase productivity by allowing users to create, control and monitor a safety system in the same software environment as their standard control. The Guardmaster 440C-CR30 safety relay meets PLe, SIL 3 per EN ISO 13849-1 and IEC 62061. It is ideal for applications requiring four to nine safety circuits and control of up to five zones.

“Machine builders across all industries are seeking safety solutions that go beyond meeting compliance requirements to helping significantly increase both configuration and operation productivity,” said Thomas Helpenstein, product manager, Rockwell Automation. “The flexible, compact Guardmaster 440C‑CR30 safety relay configured via Connected Components Workbench software meets their needs for improved safety, uptime and productivity.”

The distinct graphical user interface and drag-and-drop capabilities of the software help guide users through a simple process of selecting certified safety function blocks for the safety relay. Once programmed, an embedded Modbus interface allows the safety relay to easily communicate diagnostic data to Allen‑Bradley Micro800 controllers, Allen-Bradley PanelView graphic terminals or Allen‑Bradley CompactLogix controllers. Leveraging the embedded communication capabilities and the software allows users to easily monitor, troubleshoot and quickly modify their applications, including performing partial or conditioned shutdowns, as needed. Five status and 16 user-configurable LEDs on the safety relay’s faceplate provide local diagnostics to further aid in status reporting and troubleshooting.

With 22 on-board safety I/O points, including six configurable I/O, the Guardmaster 440C‑CR30 safety relay is the ideal solution for applications requiring multiple safety zones. Without growing the footprint, the safety relay also can be expanded with two standard Micro800 plug-in modules to support 16 additional standard I/O points, saving valuable safety I/O points for user safety systems. The safety relay also permits interoperation with multiple standard-control platforms, enabling the safety control to remain the same even if the standard control changes.


Moore Industries SSX and SST Safety Isolators and Splitters Certified for SIL 3

In August, exida approved the 2-wire, loop-powered SSX and 4-wire, line/mains-powered SST family of safety isolators and splitters for use in a Safety Instrumented System (SIS) up to SIL 3 where only the input circuit is part of the safety function. It is also approved for single use in an SIS up to SIL 2. These new approvals strengthen the usefulness of the SSX and SST and highlight the advantages of our FS Functional Safety Series, which also includes the STA Safety Trip Alarm and the SRM Safety Relay Module.

All products in the FS Functional Safety Series are built to strict IEC 61508 standards, ensuring safe and reliable function in all circumstances. Certification from a leading third-party auditor such as exida affirms Moore Industries' commitment to quality throughout the design and manufacturing process and gives end users confidence that these products are suitable for their specific application.

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Non-contact safety switches by AutomationDirect

Non-contact safety switches by AutomationDirect are interlocking devices that are designed to protect both people and machines. They are preferred in certain applications where no physical contact (under normal conditions) takes place between the switch and actuator.

  • Available in industry standard style plastic and stainless steel housings
  • Styles: Non-contact magnetic and non-contact coded magnetic
  • Wide (>10mm) sensing distance
  • High tolerance to misalignment after sensing
  • Enclosure protections: IP67, IP69K
  • All Models: cULus, RoHS, CE approvals

Non-Contact Coded Magnetic Safety Switches:

Coded non-contact safety switches use coded magnets to close the circuits, thereby offering even more protection. The safety switch and actuator work together in such a way that the enable condition from the safety device is only triggered if the actuating element is within the switch's response range and the code on the actuator matches that of the switch.

Non-Contact Magnetic Safety Switches

These are simple magnetic reed switches and are designed to conform to IEC 60947-5-3 and be used as directed by EN1088, EN ISO12100 and EN 60204-1.

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Hazardous Location Control Stations

Factory sealed pushbutton, selector switch and pilot light stations offered by Automation Direct are designed to prevent the igniting of external hazardous atmospheres by the enclosed arcing devices. Factory sealed devices eliminate the need for external sealing.

  • Eliminates external sealing requirements
  • NEMA 3 weatherproof
  • Color coded wiring
  • Stainless steel captive screws for cover assembly
  • Ground boss for grounding in the splice box
  • Cast conduit hubs (1/2", 3/4" and 1") either dead end or feed through standard in both single and two-gang assemblies
  • Pushbutton, selector switches and pilot light bodies are copper-free aluminum
  • Operating shaft in both pushbuttons and selector switches are stainless steel
  • Miniature and standard size pushbuttons (miniature 3/4" overall diameter, standard 1-3/8" overall diameter)

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Moore's SRM Safety Relay Module for Safety Processes

Moore Industries has released the SRM Safety Relay Module, a versatile relay repeater module that has been certified by exida for single use in Safety Instrumented Systems up to SIL 2. The SRM is part of the Moore Industries’ FS FUNCTIONAL SAFETY SERIES and accepts single contact closure inputs from logic solver trip outputs including Moore Industries’ STA Safety Trip Alarm and the SPA2 Programmable Limit Alarm Trip. With three contacts per alarm input, the SRM allows for the addition of alarm contacts to safety processes without special installation or configuration.

Unlike many other interposing relays, the SRM is a Force Guided Relay, avoiding the possibility of having contacts become stuck in both Normally Open (NO) and Normally Closed (NC) positions at the same time and avoids potential problems caused by issues such as welded contacts. The SRM is built using a safety-related relay with forcibly-guided contacts, which are monitored and mechanically linked to the same armature as the output contacts.

The SRM has been developed following the IEC 61508 standard and offers a high level of availability for safety-critical applications and for use as a component part of Safety Instrumented Systems (SIS). While most safety relays are in a plastic case, the SRM in housed in a durable and rugged “universal” aluminum DIN case that can be mounted on either a 32mm G-type or 35mm Top-Hat DIN-rail.

A major design consideration of the SRM is its ease of use. It features a front-panel visual diagnostics, with three LED indicator lights reflecting the current Input, Output and Power status. It can also be installed in an SIS with minimal wiring.

'Moore's SRM Safety Relay Module for Safety Processes '