Meggitt VibroSmart® VSV301 + VSB300 monitoring module Communications

Communications

All VibroSmart modules and devices

communicate using a system bus (SBUS), based

on Ethernet technology, that supports data

transfer rates of 100 Mbps at distances up to

100 m. The SBUS ensures the transfer of both nonreal-

time (standard) and real-time (time critical)

information between VibroSmart modules, and

supports communication with the host computer

running the VibroSight software.

VibroSmart modules can either be located sideby-

side (adjacent to each other) or separate

from one another. This flexibility allows the

functionality of the monitoring system to be

distributed depending on the size of and access

to the machinery being monitored. It also helps

reduce the expensive sensor cabling typically

required between sensors and monitoring

modules, by effectively replacing it with lower

cost Ethernet and power supply cabling.

VibroSmart modules that are located side-by-side

can communicate directly (no Ethernet cabling

required) using the sidebus connectors on the

terminal base that support both SBUS and

redundant power supply distribution. VibroSmart

modules that are mounted separate from one

another can communicate over standard and

redundant Ethernet networks of shielded twistedpair

Ethernet cable using the Ethernet connectors

on the terminal base. However, using these

Ethernet connectors does require that the power

supply is distributed separately.

Discrete signal interface (DSI) inputs, including the

module lock signal, and tachometer signals can

be connected directly to individual modules

(locally). Alternatively, to reduce external wiring,

these signals can be connected to a single

VibroSmart module and shared among modules

in the same measurement block using the SBUS.