Main image of Yokogawa SNT401-53/CU1N Optical ESB Bus Repeater Master Module

Yokogawa SNT401-53/CU1N Optical ESB Bus Repeater Master Module

SNT401-53/CU1N
Manufacturer: Yokogawa Electric
Series: SNT400 Series
Model Number: SNT401-53/CU1N
Weight: 0.3 kg
Condition: In Stock
Availability: 100% Original Brand New
Product Origin: JP
Shipping port: Xiamen
Warranty: 12 Month

Product Description

The SNT401-53/CU1N provides optical extension and repeater functionality for the Yokogawa ESB bus network.

It supports star and chain connection for flexible network architecture.

The module can be cascaded up to 2 stages with a maximum transmission distance of 5 km (total).

For Vnet/IP R1.03 or later systems, the total two‑stage distance is extended to 10 km.

It comes equipped with the CU1N connector unit dedicated for ESB bus interfacing.

The module is designed for harsh environments with G3 corrosion protection and a wide temperature range.

Technical Specifications

  • Function: ESB Bus optical transport / repeater
  • Connection Topology: Star type / Chain type (both supported)
  • Connecting Stages: Max 2 stages
  • Transmission Distance:
    • Standard: Max 5 km (2 stages total)
    • Vnet/IP R1.03+: Max 10 km (2 stages total)
  • Current Consumption: 0.5 A
  • Weight: Approx. 0.3 kg
  • Environment:
    • ISA Standard G3 corrosion resistant
    • Operating temperature: -20 … +70 °C
  • Explosion Protection: None (suffix 5)
  • Included Option: CU1N ESB Bus connector unit

Installation Guide

Mount the SNT401-53/CU1N in a control panel or rack with adequate ventilation.

Connect optical fibers using the CU1N ESB bus connector unit.

Configure network topology (star or chain) according to system architecture.

Ensure total transmission distance does not exceed 5 km (or 10 km for Vnet/IP R1.03+).

Connect power supply and verify module status before full system operation.

Packing List

  • 1 × Yokogawa SNT401-53/CU1N Optical ESB Repeater Module
  • 1 × CU1N ESB Bus Connector Unit
  • Product label & documentation
Shipping methods: FedEx, UPS, DHL.

Frequently Asked Questions

1. What is the function of SNT401-53/CU1N?

It is an optical ESB bus repeater master module for extending network distance.

2. What topologies are supported?

Both star and chain connection are supported.

3. What is the maximum transmission distance?

Max 5 km (2 stages); up to 10 km with Vnet/IP R1.03 or later.

4. What does CU1N mean?

CU1N is the dedicated ESB bus connector unit included with the module.

5. What is the operating temperature?

-20 °C to +70 °C, with ISA G3 environmental rating.


Attention: The above product information is sourced from the internet and cannot be guaranteed to be authentic. For specific product parameters and prices, please contact SpareTech PLC professionals in a timely manner.
Brand NameYokogawa Electric
Model No.SNT401-53/CU1N
Product TypeOptical ESB Bus Repeater Master Module
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The SNT401-53/CU1N is a Yokogawa optical ESB bus repeater master module supporting both star and chain topology. It includes the CU1N ESB connector unit, offers up to 10 km transmission distance (Vnet/IP R1.03+), and is rated for -20…+70°C with ISA G3 corrosion resistance.
SpareTech PLC provides you with a PDF version of the instructions about Yokogawa Electric SNT401-53/CU1N, where you can download the Yokogawa Electric SNT401-53/CU1N manual PDF for free:
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