Improved system reliability with redundancy

The system hub can provide redundancy for critical operations by using two identical devices.

The primary system hub is in active mode and the other one is in passive mode. If the primary unit stops working properly the

secondary unit is activated and a failure message is sent to TankMaster (or a DCS system).

Redundancy can be utilized for some or all equipment in the system from the control room to the field devices.

Redundancy is supported on field level as well by using two field devices connected to the same tank for hot redundancy of field

values. It can be a Rosemount 5900 2-in-1, two separate Rosemount 5900 devices, or two separate devices of different types.

Field port redundancy is supported where two field ports can be connected in a ring network where one acts as a hot backup. All

field ports are available for redundancy. It is also possible to use redundancy individually on ports 1-2, ports 3-4, or ports 5-6.

Figure 3: Redundancy

B

A

A

C

C

D

D

B

A. TankMaster client PCs

B. Switch

C. TankMaster servers

D. Rosemount 2460 System Hubs

Rosemount 2460

May 2020

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Emerson.com/Rosemount