The Bytorent Quanta-CNUG31S is an emergency stop safety relay that combines comprehensive safety certification with a remarkably compact 22.5mm DIN rail footprint. Certified to the highest attainable performance levels—PL e according to EN ISO 13849-1, SIL CL3 according to EN 62061, and Safety Category 4—this module is engineered to serve as the central safety monitor for a wide array of industrial safeguarding devices. It eliminates the complexity often associated with safety integration by consolidating multiple monitoring functions into a single, configurable unit.

The output stage of the CNUG31S is designed for both safety and auxiliary control. It provides three independent normally open (NO) instantaneous safety contacts, each rated for 6A at 250VAC (AC-1) and 4A at 250VAC (AC-15), offering ample switching capacity for downstream contactors and power circuits. A dedicated normally closed (NC) instantaneous auxiliary contact is provided for status feedback to a PLC or external monitoring system. Additionally, two solid-state signal outputs (rated <200mA at 24VDC) are available for further control or indication purposes.

Installation and configuration are streamlined through several thoughtful design features. The unit accepts inputs from a broad range of safety devices, including PNP and NPN light curtains, emergency stop pushbuttons, safety interlock switches, two-wire and four-wire safety edges, and two-hand control stations. A proprietary 10-position DIP switch provides access to a rich set of configuration options, allowing the relay to be tailored to specific application requirements without external programming tools. Independent channel LED indicators provide clear, real-time diagnostic feedback, accurately pinpointing fault conditions such as inter-channel shorts or input signal jitter, which drastically reduces troubleshooting time. Redundant power terminals simplify 24VDC wiring expansion and improve overall installation efficiency.

The CNUG31S is built for demanding industrial environments. It operates from a 24V DC supply with a wide voltage tolerance (+15%/-20%) and consumes less than 1.9W of power. The rugged PA66 V0 flame-retardant housing provides IP30 protection for the enclosure and IP20 for the terminals, with a recommended installation in an IP54 cabinet or housing. The unit functions reliably across a wide temperature range of -25°C to 65°C and carries international certifications including TUV, CE, EAC, and CCC. With its combination of high-integrity safety, flexible input compatibility, and clear diagnostics, the Bytorent Quanta-CNUG31S is an ideal safety core for applications in robotics, packaging machinery, machine tools, and automated manufacturing systems.

Technical Specifications