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SNB10D

SSC10S/SSC10D

Fiber-optic cable

SEC401 SNT401

SNT401

SNT501

SSB401

BUS 2

BUS 1

BUS 2

BUS 1

SSB401

ESB bus

BUS 2

BUS 1

ESB bus

: Connector unit with terminator for ESB bus

Figure 3.4.2-2 Example of Chain Type Connection: Using Safety Control Unit and Safety Node Unit

Using Unit for Optical Bus Repeater Module

This section explains how to connect the optical bus repeater module with a mounted optical

ESB bus repeater to a safety control unit and a safety node unit. Both ends of the ESB bus

should be terminated on each level. The following figure shows an example of this connec-

tion.

Mount the ESB bus coupler module (SEC401) on the safety control unit (SSC10S/SSC10D);

mount the optical ESB bus repeater master module (SNT401) on the unit for optical bus re-

peater module (SNT10D);connect the SEC401 and the SNT401 with the ESB bus.

Mount the ESB bus interface module (SSB401) on the safety node unit (SNB10D); mount the

optical ESB bus repeater master module (SNT401) and the optical ESB bus repeater slave

module (SNT501) on the unit for optical bus repeater module (SNT10D);connect the SSB401

and the SNT401 with the ESB bus.

Mount the ESB bus interface module (SSB401) on the lowest-level safety node unit

(SNB10D); mount the optical ESB bus repeater slave module (SNT501) on the unit for optical

bus repeater module (SNT10D);connect the SSB401 and the SNT501 with the ESB bus.

For the modules at the ends of ESB bus, use a connector unit with terminator for ESB bus.

Connect the optical ESB bus repeater modules with fiber-optic cables.

<3.4 Connecting ESB Bus Cable > 3-25

IM 32Q06C10-31E 4th Edition : Jan.30,2015-00

YOKOGAWA SSC60D User Manual

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