Benefits of ProSafe-RS R4

Early start-up of a plant

■ Challenge:

Starting up a plant more quickly has long been an issue that directly affects customers’ profits.

■ Our solution:

Application engineering and hardware engineering can progress independently and parallel. This parallel work shortens the

project schedule, either by starting later or by possibly enabling an earlier start-up.

Although the start-up of instruments and the installation of I/O modules can be performed in parallel, the loop check is completed

only after the FAT (Factory Acceptance Test) is finished and the controller and the engineering environment are installed.

In Yokogawas parallel engineering, there is no need to wait for the controller and engineering environment to be completed. The

integrity of loops can be checked only with N-IO modules and F-CSP. If any change is found in the I/O definition information, it can be

corrected on the spot, and the corrected definition can then be reflected in the master information in the plant.

Reducing risks to scheduled project delivery

■ Challenge:

The I/O definition often needs to be changed due to physical constraints. Such problems usually occur during commissioning and

may prolong the project schedule, as well as require costly re-wiring.

■ Our solution:

The I/O definition of N-IO modules can be changed more flexibly. Signal types among DI/DO/AI/AO can be switched only with

software, and there is no need to change I/O modules. Since signal types can be designated at each channel, there is no need to

stock I/O modules for each signal type, reducing maintenance costs.

Highly flexible installation

■ Challenge:

Sufficient space is needed to mount I/O modules. Also, the marshalling to connect field devices and I/O modules require space

and work, increasing costs. This may reduce the number of possible locations for arranging I/O modules.

■ Our solution:

N-IO modules do not need  the hardware marshalling. Conventionally, this marshalling is necessary to arrange field wiring for

each signal type and to connect them to I/O modules dedicated for specific signal types. In contrast, multiple types of signal can

be assigned to a single N-IO module, and there is no need for arranging signal types and thus marshalling. For this reason, N-IO

modules need less space and wiring for installation. This module is ideal for flexible and distributed installation in the field.

Furthermore, the use of N-IO modules eliminates the need for marshalling cabinets, further saving space and costs.