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The SNT411-5F Optical ESB Bus Repeater Module converts ESB Bus, which connects among safety control unit, safety node

unit and N-IO node, to optical signal.

SNT411-5F ESB Bus transmission distance can be extended by connecting Optical ESB Bus Repeater Master Module

(SNT411) and Optical ESB Bus Repeater Slave Module (SNT511) with an optical fiber cable.

The SNT411-5F  ESB bus transmission distance can be extended within the range of up to 50 km by connecting Optical ESB

Bus Repeater Master Module (SNT411-5F) at master side to N-ESB Bus Module (S2EN501) at slave side and N-ESB

Bus Module (S2EN501) at master side to Optical ESB Bus Repeater Slave Module (SNT511) at slave side with an

optical fiber cable.

SNT411-5F Optical ESB Bus Repeater Master Module

This SNT411-5F module is connected from ESB Bus Coupler Module (SEC401, SEC402) on the safety control unit or ESB Bus Interface Module (SSB401) on the safety node unit (SNB10D) through ESB Bus cable.

There are two types of ESB Bus Repeater Modules: with or without a terminator

Function: ESB Bus optical transport function (Vnet/IP only)

Connection method: Star type connection

Chain type connection

Available for both star and chain type connection.

Number of connecting stage: Maximum two

Transmission distance: 5 km to 50 km (total two stages)

Attenuate the optical power by 3-4 dB in between SNT411 and SNT511, S2EN501 and

SNT511, or SNT411 and S2EN501.

When the optical attenuation by the optical fiber cable is less than 3 dB, use an

attenuator to reduce the attenuation by 3 dB. (*1)

Current consumption: 0.5 A

Weight: Approx. 0.3 kg