Force Guided: Different from normal relays
Force guided relays are used in safety circuits in combination with light curtains, interlock switches, and emergency stop switches to control outputs. These are used to expand outputs for safety relay modules and safety controllers. Our force guided relays are highly engineered for reliably switching low loads by the monitoring circuit. We developed comprehensive documentation for forced guided relays to accelerate the development process for safety controls and application notes to point out possible error sources.
The force guided relay differs from a typical control relay in its architecture. The so-called actuator in a force-guided relay tightly connects the opening and closing contacts. A normally closed contact cannot be closed simultaneously with a normally open contact due to its permanent connection. For instance, if a normally closed contact is welded to a normally open contact, the normally closed contact will invariably be open. The opposite is also accurate. As a result, for instance, by incorporating the normally closed in a monitoring circuit and analysing its closing, you can be certain that the normally open contact has opened.
Key Links
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Relays in Safety Technical Article
There are no fewer than seven ways for even a simple transistor to fail. This means that monitoring all the electronic components that may be defective in a safe electronic switching output calls for considerable effort and the use of such things as a clocked fail- safe unit and micro-controllers. Read more in this technical paper by Frank Liebusch, Global Product Manager, Industrial Relays.
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Force Guided Relays Infographic
TE Connectivity (TE) has developed comprehensive documentation of Forced Guided Relays which accelerates the development process for safety controls and application notes help to point out possible error sources.
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Industrial Relays QRG
Our industrial relays comply with standardized PCB footprints and offers a wide range of inrush current capabilities and addresses the complete spectrum of requirements for production lines, robotics, elevators, control panels, CNC machines, motion control systems, lighting, building systems, solar, HVAC, and an array of safety-critical applications. Whether you are designing for harsh or indoor applications, we can deliver high quality relays from state-of-the-art production lines.
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SCHRACK Force Guided Relays QRG (English)
SCHRACK Force Guided Relays are used in safety circuits in combination with light curtains, interlock switches, and emergency stop switches to control outputs. In the design of the Force Guided Relays, special importance was attached to the switching of low loads by the monitoring circuit. TE Connectivity (TE) has developed comprehensive documentation of Forced Guided Relays which accelerates the development process for safety controls and application notes help to point out possible error sources.
SR6nG is a fully compatible successor of TE’s force guided relay series SR6A/B/C/V/D/M. With its force-guided contacts the state of a contact can be monitored with a diagnostic coverage of 99% (IEC 61508-2) which makes the SR6nG ideal to design safety circuits. The minimum contact load of 5V / 1mA allows direct monitoring through controller input. A more sensitive monostable magnetic coil system reduces heat generation. The relay height of 15.7mm fits best in 22.5mm DIN rail housings.
Safety is paramount in every corner of our daily lives. Safety in human machine interaction has one goal, protecting humans in event of a failure of the operating application. See more here about our Force Guided Relay products.
Listen to Christian Netsch, TE Product Manager along with Steffen Fasching, TE Field Application Engineer, to learn more about application and product trends related to force guided relays.
