Product Description

• Estimated Lead Time : 6 - 8 weeks.

• Manufacturer : ABB

• Part Number : SS823

• Product Type : ModuleBus Redundancy Link

• Function : Used in pairs to connect two separate ModuleBus segments (one primary, one redundant) to the same set of I/O modules, enabling S800 I/O redundancy.

• Application : Ensures high availability by allowing immediate switchover to a backup I/O system (redundant CPU, communication lines, and power supplies) if the primary system fails.

• Connection : Connects to the ModuleBus on the I/O base units (MTUs) via short internal cables.

• Compatibility : Used with redundant communication units like the CI840A or CI840B on the primary and secondary CEX-Bus segments.

• Status Indicators : Includes LEDs for status, fault, and active/redundant states.

• Isolation : Provides electrical isolation between the two redundant bus segments.

• Shipping Weight : 2 Kg

Download PDF File SS823 Voting Device