Connections to the Megablock are made using pluggable, screw

terminal type connectors. This allows wire terminations to be made to

the individual connectors which are then plugged into the Megablock.

Devices can then be connected and disconnected easily during

commissioning. After commissioning, retaining screws are tightened

to secure each connector to the Megablock.

Trunk connections for the fieldbus home-run/trunk cable are easily

identified by their black connectors. Separate numbered connections

are provided for each spur drop.

SpurGuard™ is a device-port, short circuit protection technique

that minimizes susceptibility to single points of failure. The FCS-MBx

SG Megablocks range has built-in SpurGuard™ protectors that prevent

a short circuit in any of the individual transmitters or spur cable runs,

from bringing down the entire fieldbus segment. A red LED near each

spur connection indicates when a spur is shorted and hence in “over

current” mode.