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Yokogawa YNT512D Ethernet Interface and Bus Repeater Module

Configured for Ethernet signal conversion and V Net bus regeneration in Yokogawa CENTUM VP, CS 3000, and FA-M3 platforms, the Yokogawa YNT512D-P11/KT (YNT512D Ethernet Interface & Bus Repeater Module) provides direct physical execution.

Suffix Breakdown & Model Matrix

Suffix / Option Option Code Description
YNT512D Base Model Ethernet interface and dual-redundant V Net bus repeater chassis
-P11/KT Option Variant Rack-mounted FA-M3 interface variant with cable tray assembly
-V12 Option Variant Extended thermal range variant operating up to 55 deg C
-Q12 Option Variant Compact bus repeater module assembly

Hardware Specifications

Parameter Specification
Model YNT512D-P11/KT
Brand Yokogawa
Origin USA
Weight 0.3 kg to 3.36 kg (variant dependent)
Dimensions 144 mm x 144 mm x 72 mm
Operating Temp 0 deg C to 50 deg C (-P11/KT variant)
Power Consumption 4.5 W (-V12 variant)
Power Supply Input 100-240 V AC (50/60 Hz) or optional 24 V DC +/-5%
Network Interface 10BASE-T / 100BASE-TX (IEEE 802.3 compliant)
Network Protocols TCP/IP, UDP/IP, proprietary V Net protocol
Diagnostic Port RS-232C serial configuration interface
Channel Density 2 input channels for signal regeneration
Ingress Protection IP65 rated enclosure (select variants)
System Compatibility Yokogawa CENTUM VP, CS 3000, FA-M3 controllers

4-20 mA HART Loop Protocol and Channel Isolation

The YNT512D-P11/KT module routes network packets between Ethernet controllers and proprietary V Net buses while maintaining physical channel-to-channel isolation across node segments. Active driver circuitry regenerates incoming signal waveforms, suppressing common-mode line noise and high-frequency noise induced by surrounding field instruments. Internal optocoupler barriers isolate internal CPU backplane logic from long-distance coaxial and twisted-pair bus trunks, preventing ground potential offsets from corrupting deterministic control data.

Frequently Asked Questions

Q: Does the hot-swap capability of the module require powering down connected V Net bus segments?

A: Field technicians can replace the module online without disconnecting system power or disturbing adjacent nodes, provided the secondary V Net bus carries active communication traffic during hot insertion.

Q: How does the module process event transmission data frames across Ethernet interfaces?

A: The onboard network controller handles up to 128 bytes per event transmission, processing both ASCII and binary data structures over TCP/IP or UDP/IP protocols at standard 10/100 Mbps communication speeds.

Field Installation Guidelines

Position the YNT512D-P11/KT module on the designated rack assembly or DIN-rail track. Engage the module mounting latches completely, then torque front retaining screws to ensure proper grounding contact with the cabinet frame.

Connect primary and secondary V Net communication cables to their respective module ports. Keep signal lines separated from high-voltage AC distribution power cables, and ground all cable shield drain wires at a single ground bus bar within the control enclosure.

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