Product Description

The YNT511D-V42 is an industrial-grade optical bus repeater rack designed for the expansion of Extended ESB (Electronic Serial Bus) networks in Yokogawa’s CENTUM VP and CENTUM CS distributed control systems (DCS). By converting electrical ESB signals into high-integrity optical transmissions, this module overcomes the distance limitations of copper wiring, enabling deterministic communication between remote I/O nodes and the central control processor. Its robust, rack-mountable design provides a scalable solution for large, geographically dispersed industrial plants.

Technical Specifications

Field Applications

The YNT511D-V42 is used in large-scale industrial facilities where remote I/O nodes are located beyond the reach of copper cabling. Common deployments include:

• Oil refineries

• LNG terminals

• Offshore platforms

It ensures high-speed, deterministic communication while eliminating electromagnetic interference (EMI), keeping critical process signals clean and reliable.

Frequently Asked Questions

Does the YNT511D-V42 require specialized fiber optic cables?
No specialized fiber is required; it works with standard industrial multimode or single-mode fibers. Selection depends on required distance and system configuration. Always verify that fiber patch cords meet bandwidth and attenuation requirements for the ESB bus.

Can multiple repeaters be cascaded in a single network?
Yes, but the ESB bus has limits on the number of repeaters per segment to maintain deterministic timing. Refer to the CENTUM VP hardware design guidelines to ensure your network topology stays within timing margins.