Yokogawa EC401-50 Bus Coupler Module Inquiry Item

Details

This Yokogawa EC401-50 is an ESB bus coupler module of S3 version, used for Yokogawa CENTUM VP DCS control system. It is responsible for data forwarding and bus coupling between different ESB bus nodes, builds communication link between FCS control station and remote node, supports hot swap function. The module integrates complete bus diagnosis circuit, can detect bus fault, link disconnection and communication exception in real time. It is widely used in petrochemical, power, chemical and other large process control systems, and is a common maintenance spare part for CENTUM VP DCS cabinets.

Specifications

Model: EC401-50 Brand: Yokogawa Version: S3 Function: ESB bus coupling communication Applicable system: CENTUM VP DCS Support function: Hot swapping, bus fault diagnosis Mounting: DCS backplane slot installation Power supply: Backplane power supply Certifications: CE, IEC

Components & Troubleshooting

Bus communication processing chip, differential signal transceiver circuit, status LED indicator, gold-plated backplane connector, metal plastic housing. Common faults: ESB bus link offline, node cannot be scanned, communication data interruption, module cannot be identified, bus conflict alarm.

Disclaimer

This spare part shall be installed and configured by qualified DCS instrument technicians. Follow hot swap operation specifications during replacement.