The Allen-Bradley Guardmaster SensaGuard range is designed to provide secure safety switching, diagnostics and monitoring in one package. Combining RFID coding with an M23 Safety Distribution block, SensaGuard is designed to simplify the integration of multiple sensors.
There comes a point in machine safety design when the designer needs to decide if it makes more sense to use multiple safety relays or to upgrade to a safety controller.
There comes a point in machine safety design when the designer needs to decide if it makes more sense to use multiple safety relays or to upgrade to a safety controller. This point typically occurs when the application requires three or more safety relays. This article focuses on some of the issues that designers must consider when determining whether a safety relay or a safety controller is the best solution for a particular job.
Treotham Automation is now supplying Wieland’s Samos Plan v1.3 control software for its range of Samos Pro modular safety products.
The MSI-SR5 safety relay can be used to connect several safety components so as to act on a single switch-off circuit using a logical AND link. Using the one relay, for example, the combined application of a safety light curtain for point of operation guarding and a protective door for access guarding can be realised up to Performance Level PLe according to EN ISO 13849-1.
All styles of Allen-Bradley emergency-stop push buttons are now available with TÜV-certified B10d Functional Safety ratings. This provides users with published certified safety product data for calculating the safety level of their entire control safety system, helping to ensure control safety system reliability.
Metso has the launched the HART version of its Neles ValvGuard VG9000 safety valve controller. The safety-valve controller and automatic partial-stroke testing (PST) device is for both emergency shutdown (ESD) and emergency venting valves (ESV). The VG9000 is therefore now available in both HART and Foundation Fieldbus versions and can be used with both single- and double-acting actuators. The HART version supports also both safety AOs and DOs. TÃœV Rheinland has certified VG9000 as compliant with IEC61508, up to SIL3.
Sepam protection relays are now IEC 61850 level 2 compliant with direct ethernet connections. Based on the ethernet protocol, the IEC 61850 communication standard ensures high communication speeds and versatile communication architectures, and interoperability between manufacturers
Invensys Operations Management has announced the availability of version 2.1.1 of its Triconex Trident safety system. Two input modules are now provided that are designed to enhance worker safety, reduce downtime and deliver more accurate trip analysis in power and turbomachinery applications. One module enables faster response to unsafe equipment conditions; another optimises trip data analysis to prevent future upsets.
The Simatic CPU 317TF-2DP controller from Siemens implements motion control, safety and standard tasks in one device. The controller utilises PLCopen-compatible motion control blocks and is suitable for coupled motion sequences of multiple axes.
The Allen-Bradley 193-EC5 E3 Plus solid-state overload relay features voltage protection and energy monitoring. Part of the E3 Plus family, the overload relay combines current and voltage protection with enhanced power monitoring and diagnostic capabilities.
The Pilz PNOZ s30 safety relay monitors safe standstill, speed and direction of rotation. Safe working practices with the safety gate open, reduced set-up times and rapid access to the machine once standstill is initiated are the intended benefits for users.
The Simotion D motion control system and Sinamics drive family feature integrated safety functionalities for fulfilling the requirements of Performance Level d of EN ISO 13849-1 or category 3 according to EN 954-1 as well as Safety Integrity Level 2 according to EN 61508/IEC62061.
Something happens – a signal peaks or falls – and you need to know. A limit alarm trip can trigger the response needed to maintain normal, and safe, operations.
Wieland’s Samos PRO is a compact safety controller for machine and plant applications. Utilising 22.5 mm-wide modules, a programmable safety system can be constructed in a total width of just 45 mm.