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Optical ESB Bus Repeater Slave Module (SNT501/SNT511)
This module has a branch connector with a built-in ESB bus terminator, so you can use it
as is.
Examples of connecting optical ESB bus repeater modules are shown as follows using
SNT401 (optical ESB bus repeater master module) and SNT501 (optical ESB bus repeater
slave module).
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Star Type Connection
The star type is used for connecting safety node unit with optical ESB bus repeater module
mounted and unit for optical bus repeater module to safety control unit. Both ends of the ESB
bus should be terminated. The following figure shows an example of the star type connection.
Examples of connecting SNT401 and SNT501 to safety control unit (SSC10S/SSC10D) are
shown as follows. The same connection can be applied to SSC60S/SSC60D and SSC50S/
SSC50D.
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) and the optical ESB bus repeater slave mod-
ule (SNT501) onto the lowest-level safety node unit (SNB10D) and connect with the ESB bus.
For the modules at the end of ESB bus, use a connector unit with terminator for ESB bus.
Connect the optical ESB bus repeater modules (SNT401 and SNT501) with fiber-optic cables.
The optical ESB bus repeater module must always be dual-redundantly configured.
<3.4 Connecting ESB Bus Cable >
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IM 32Q06C10-31E
4th Edition : Jan.30,2015-00
