Eaton Crouse-Hinds Megablock F300 Series, Instruction Manual

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1 INM F300 Rev 9
1 OVERVIEW
F300 Megablocks are DIN-rail mounted, device couplers for F
oundation
™ fieldbus
or Profibus PA networks. They allow connection of field devices to the segment
trunk cable and provide short-circuit protection to the segment.
Megablocks minimize hand wiring and allow individual devices to be added to
and removed from the segment without disrupting network communication.
Megablocks are available in four, eight, and twelve port versions. Multiple
Megablocks are easily wired together to allow larger segments to be constructed.
Each F300 Megablock includes an F97 Terminator for installation in the trunk
terminals, which is clearly marked with a large ‘T’ for easy identification by field
personnel.
Individual surge-protector modules (FS32) can also be fitted to any of the
Megablock fieldbus terminals to provide protection against induced surges and
transients that can potentially destroy or degrade certain components inside the
F300 Megablocks.
2 DESCRIPTION
Simple and reliable interconnection
Each Megablock has dedicated connections for the fieldbus “home run” or trunk
cable. Trunk connections are identified by their black connectors. Numbered
(grey) connectors are provided for each spur.
Wiring connections to the Megablock are made using pluggable connectors
(screw terminal type are standard, but other connection styles are available).
These allow wire terminations to be made to the individual connectors, which are
then plugged into the Megablock. Devices can be connected and disconnected
easily during commissioning. On completion, the connector retaining screws are
tightened to secure each connector to the Megablock.
F300 megablock range
MTL Fieldbus device couplers
Figure 1 .1 - Megablock models F312, F308 and F304