

Yokogawa EB401-50 Bus Interface Master Module 100% New
Downtime costs thousands per hour. The EB401-50 bus interface master module pays for itself the first time you need it. Physical Layer Interface: IEEE802.3 10BASE 2 (1 port) | Connector: BNC | Communication Speed: 10 Mbps. Factory-new, bench-tested, 12-month warranty.
Why the Yokogawa EB401-50 Matters for Your Operation
In power generation, every component in your control system has a specific job — and when one fails, the ripple effects can shut down an entire production line. The Yokogawa EB401-50 is a bus interface master module that keeps your gas turbine control systems and steam turbine monitoring running without interruption.
Here is what this module actually does. function: ER bus interface function; physical layer interface: IEEE802.3 10BASE 2 (1 port); connector: BNC; communication speed: 10 Mbps. These are not generic specifications — they determine whether this module will work in your specific Yokogawa system. We have seen too many cases where a maintenance team ordered a replacement only to find it was the wrong revision or configuration. That is why we test every EB401-50 on a live Yokogawa rack before shipping — full signal injection across every channel, not just a visual check.
Installation matters too. The most common cause of DOA reports is not a defective module — it is bent backplane pins from forcing a module in at the wrong angle. Take your time lining up the guides. Apply even pressure. If it does not slide in smoothly, stop and check the alignment. Always wear a grounded wrist strap — static discharge from removing a fleece jacket in a dry turbine hall can exceed 15,000 volts, destroying sensitive input protection diodes instantly.
Think about your sparing strategy. A single Yokogawa EB401-50 costs a fraction of what one hour of unplanned downtime costs in power generation. We ship replacements within 24 hours from Shenzhen — but even 24 hours is too long if you are losing production. For critical applications, keep one cold spare on your shelf.
Technical Specifications
| 0 | Always 0 |
|---|---|
| 1 | With ISA Standard G3 option |
| ER Bus Interface Master Module | serves as the communication link between the ESB Bus Node Unit (Local Node) or the Compact Field Control Unit (for FIO) and the ER Bus Node Unit (Remote Nodes) using the ER bus protocol. |
| Function | ER bus interface function |
| Physical Layer Interface | IEEE802.3 10BASE 2 (1 port) |
| Connector | BNC |
| Communication Speed | 10 Mbps |
| Transmission Distance | Maximum 185 m (for YCB141) |
| Current Consumption | 0.7 A |
| Weight | 0.3 kg |
| Description | Model EB401 ER Bus Interface Master Module |
| -5 | Standard type with no explosion protection |
| -E | Standard type with explosion protection |
| Manufacturer | Yokogawa |
| Model / SKU | EB401-50 |
✓ Ships within 24 hours | ✓ 12-Month Warranty | ✓ Worldwide Delivery
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