YNT511D-V42/KT

The Yokogawa YNT511D-V42/KT is an optical bus repeater for Yokogawa's V net communication system. It uses fiber-optic transmission to extend communication distances between network segments while maintaining the dual-redundant bus configuration. The YNT511D model supports transmission distances of up to 4 km per optical repeater pair, subject to the specified fiber type, optical loss, and overall network configuration.

Technical Specifications

Parameter	Specification
Model	YNT511D-V42/KT
Brand	Yokogawa
Product Type	Optical Bus Repeater
Network	V net
Bus Configuration	Dual-redundant
Transmission Medium	Fiber-optic cable
Maximum Transmission Distance	4 km per optical repeater pair
Power Supply	24 V DC, indicated by the model's 4 power-supply code
Option Code	/KT

Network Function and Transmission Limits

The YNT511D converts the electrical V net communication path to an optical-fiber link, allowing the network to span distances beyond those supported by a single coaxial cable segment. It is intended for V net rather than standard Ethernet, even though Yokogawa documentation uses 10BASE-2 and 10BASE-5 terminology to describe the cable configurations.

The 4 km transmission rating applies to a pair of YNT511D optical bus repeaters. Actual network reach also depends on fiber specifications, optical attenuation, repeater count, and the total transmission-distance restrictions of the V net system.

Frequently Asked Questions

Q: Can one YNT511D repeater provide a 4 km optical link?

A: The documented 4 km configuration uses two YNT511D optical bus repeaters, one at each end of the optical link. The fiber type and optical-loss budget must meet the manufacturer's specifications.

Q: Is the YNT511D-V42/KT compatible with standard Ethernet networks?

A: No. The YNT511D is designed for Yokogawa V net communication. The 10BASE-2 and 10BASE-5 references in its documentation describe cable configurations and do not mean that V net is standard Ethernet.

Q: What should be checked when replacing an existing YNT511D?

A: Verify the complete model code, power-supply configuration, /KT option, fiber interface requirements, and existing V net topology. The repeater must match the intended dual-redundant network configuration.

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