Eaton F11 Fieldbus Power Hub

Power conditioner with terminators for fieldbus networks

• Built-in fieldbus power conditioning

• 5 fieldbus device ports

• 30mA current per device

• Up to 315mA total current

• Auxiliary port for expansion

• Complete with AC power supply

• Battery-pack option 5 fieldbus device ports

The Relcom Power Hub (F11) is the next generation of the popular

Power Hub. Ideal for bench-tops, labs, demonstrations and test setups,

the Power Hub is a mini fieldbus segment in a box—just add devices.

The Power Hub is a combined bulk power supply, fieldbus power

conditioner, two built-in terminators, five ports for attaching devices

(Device Ports), and an Auxiliary Port for expansion and connection of

additional devices. It functions as a zero length homerun with spurs

(star topology).

The Power Hub is powered by a plug-in wall transformer with an

input voltage range of 100-240VAC (50-60Hz). Adapters are supplied

with the transformer for four different country power outlets (North

America, Europe, UK, and Australia).

Fieldbus devices can be connected to the Power Hub with shielded

or unshielded twisted pair fieldbus cable. The controller (host), if

present, is considered to be a device.

The Power Hub provides a minimum of 30mA of power-conditioned

current for each Device Port. If the current needs of a fieldbus segment

exceed the capability of a Device Port, the Auxiliary Port can also be

used to provide additional power-conditioned current.

The Power Hub can supply up to 315mA of power-conditioned

current for all Device Ports and the Auxiliary Port. The Power Hub can

be mounted on a 35mm DIN rail. For applications where AC power is

not available, the Power Hub can also be mounted on a battery pack

(accessory FCS-A11) for fieldbus power in the field.

Current limiting SpurGuard™ protection for each Power Hub

Device Port limits the current draw of an attached cable and device and

protects against short circuits. A short circuit in a spur cable or device

will not take down the entire segment. The remaining devices on the

segment continue to operate normally.

Wire Connections to the Power Hub are made using pluggable screw

terminal connectors. Pluggable connectors allow easy connecting,

disconnecting, and moving of devices for reconfiguration, maintenance,

and troubleshooting. Two securing screws on each connector ensure

it stays in place.

To connect a device, cut and strip the +,  –, and shield (S) wires,

insert them into the terminals, and tighten the screw terminals. Plug

the connector into a Device Port or the Auxiliary Port and tighten the

securing screws.

A typical use for the Power Hub is to configure, precommission,

test, or calibrate Fieldbus devices. In this case, the Fieldbus device

and host device (Emerson 375 or 475. National Instruments Fieldbus

interface, etc.) are connected to the Power Hub. No other components

are required to have a functioning Fieldbus segment.