Product Description

The SNB10D-213/CU2T is a high-reliability Safety Node Unit from the ProSafe-RS series, engineered for remote integration of safety I/O modules within critical industrial safety loops. This 19-inch rack-mountable chassis provides redundant power support and ESB Bus connectivity, ensuring continuous operation of Emergency Shutdown (ESD) and Fire & Gas (F&G) systems. The /CU2T configuration includes an integrated ESB Bus terminator, making it ideal as the final node in a communication chain, preventing signal reflections and maintaining high-speed, error-free safety communication.

Technical Specifications

Industrial Application Scenarios

The SNB10D-213/CU2T is widely used in:

• Power Generation Plants

• Oil & Gas Platforms

• Chemical and Petrochemical Facilities

Its redundant power architecture ensures that maintenance on one power module does not interrupt safety functions, while the integrated bus terminator ensures data integrity at the physical end of the ESB bus chain. It is an essential component for distributed safety architectures where reliability and SIL3 compliance are critical.

Technical FAQs

1. What is the difference between /CU2T and /CU2N?

• /CU2T includes a built-in ESB Bus terminator for use as the last node in a series.

• /CU2N is a standard connector unit used for intermediate nodes that continue the bus to additional units.

2. Can this unit support 220 V AC input?
No. The SNB10D-213/CU2T is configured specifically for 100–120 V AC. For 220–240 V AC applications, select the SNB10D-4xx series.

3. How many I/O modules can this node support?
Up to 8 SDV-series Safety I/O modules, depending on the system configuration.