NFDV151-P60/B5S00 Digital Input Module Yokogawa

Forwarding of Control Communication Frames

Function

Bandwidth Limit Function suppresses the Control

Communication Frame data volume to interexchange

among the WAN within the limit of the specified

bandwidth or less.  Data overflow among the WAN

exceeding the contracted bandwidth is prevented.

When the Bandwidth Limit Function is activated, the

Preferential Forwarding of Control communication

Frames Function also becomes activated.  In case

the transmission request to exceed the bandwidth

limit occurs, the control communication frame is

transmitted by giving the priorities based on the below

table.  Even when the WAC Router abandons any data

exceeding the bandwidth limit by its Bandwidth Limit

Function; however, transmission of important control

communication frames can be protected.

 Security function

In addition to the Vnet/IP’s security function, the WAC

Router has the function to destroy packets (such data

as unused protocols and unused port numbers) which

are not used in the WAC Router to reduce vulnerability.

Are you having any problems like this?

Equipment  Cooling water pump equipment

Problems  Cooling water pump equipment

Detecting the signs of cooling water pump failure

in various places in the plant

▲ Cooling water pumps are used in various

places in the plant.

Deterioration of the rotating equipment and

other components that make up the cooling

water pumps can lead to failure of the pumps.

Furthermore, if the cooling water pumps fail

and the cooling water temperature cannot be

maintained, the equipment that needs to be

cooled may also be damaged.

Proposed System Configuration

Wireless vibration sensors are installed at locations where pump and motor

vibration can be measured. The measured vibration values are aggregated

into the Wide Area Monitoring System, and the AI (State Change Detection Service)

learns the vibration values under normal conditions and creates a model.

Whenever there is a change in the vibration values of pumps and motors that

deviates from the normal state, the AI model detects the change. This enables

early detection of changes in the condition of pumps and motors, leading to 

replacement of parts before they fail. By applying this system to cooling water

pumps in various locations in the plant, it is possible to monitor all cooling water

pumps at once to see which ones are showing abnormalities. 

Furthermore, the Wide Area Monitoring System is scalable to enable combined

monitoring of cooling water temperature and pressure, as well as equipment data,

allowing for flexible proposals tailored to each case.

For Safe Use of Product

For the protection and safety of the operator and the

instrument or the system including the instrument, please

be sure to follow the instructions on safety described

in this manual when handling this instrument. In case

the instrument is handled in contradiction to these

instructions, Yokogawa does not guarantee safety.

Please give your attention to the followings.