SNB10D-445/CU2T Yokogawa Safety Node Unit

Hardware Specifications

ProSafe-RS Communication Interface

The SNB10D-445/CU2T handles communication between safety-node hardware and the ProSafe-RS control architecture. The communication path carries system data through the designated ProSafe-RS bus structure rather than directly processing field analog signals such as 4-20 mA inputs.

The rack-mounted construction places the unit within the system hardware assembly. The supplied configuration also specifies redundant power capability. Therefore, system designers should verify the applicable power-input arrangement and node configuration against the hardware configuration documentation before installation.

Frequently Asked Questions

Q: Is the SNB10D-445/CU2T a direct 4-20 mA analog input module?
A: No. The supplied information identifies it as a Safety Node Unit. It provides system-level communication and node interfacing rather than a dedicated 4-20 mA analog input function.

Q: Does the unit support redundant power operation?
A: The supplied specifications state that the configuration supports redundant power supply options. The exact power-input arrangement requires confirmation from the applicable Yokogawa hardware documentation.

Q: What mounting method does the SNB10D-445/CU2T use?
A: The supplied product information identifies the SNB10D as a rack-mountable Safety Node Unit. It does not provide a specific rack dimension or mounting-hole specification.

Field Installation Guidelines

Install the SNB10D-445/CU2T in the designated rack position and secure the hardware according to the applicable Yokogawa installation documentation.

Route communication wiring separately from high-voltage power wiring where the system installation requires electromagnetic-noise control. Maintain appropriate separation between communication and power conductors, and avoid unnecessary cable loops.

Terminate cable shields according to the system grounding design. Do not create unintended ground paths through multiple shield connections unless the Yokogawa installation documentation specifies that arrangement.

Before energizing the unit, verify the rack position, connector orientation, power wiring, communication connections, and module configuration. Confirm the configured power redundancy and node communication arrangement against the approved ProSafe-RS system design.

Do not apply field wiring or operating conditions beyond the ratings specified by the applicable Yokogawa hardware documentation.