Eaton - MTL Product Line
MTL-Relcom Relcom F101-Px / F102-Px / F104-Px
Foundation Power Supply/Conditioner
The F10x-Px Series fieldbus power supplies are designed to provide power
for a single FoundationTM fieldbus H1 segment. They are ideal for small
and medium-sized fieldbus installations requiring non-redundant power,
such as in batch processing applications. Galvanic isolation, power
conditioning and segment termination are incorporated into each module.
For extreme reliability, the modules use passive components for power
conditioning and a reliable DC/DC converter to provide galvanic isolation
and power regulation. The connectors used for power input and the
Fieldbus are high quality pluggable types with screw retention.
Spring-clamp (-PC) and screw-terminal (-PS) connector versions are
The F101-Px is intended for use in applications that require
live-workable, energy-limited spurs in hazardous areas, where the field
devices are certified Ex nL or Ex i with Ui = 24V.
The F102-Px has a high output voltage and is capable of powering heavily
loaded segments and long cable lengths. It can also support
energy-limited spurs with fieldbus devices having Ui= 30V.
The F104-Px has low current consumption and is ideal for use in
solar-powered applications such as instrumentation nodes for remote
well-heads. This is achieved by providing a lower output voltage to the
fieldbus segment than with conventional fieldbus power supplies. The 13V
nominal output is sufficient to support up to 10 typical fieldbus
instruments on a 200m trunk cable, whilst eliminating unnecessary power
dissipation in the field.
Termination of the fieldbus segments is normally enabled with a switch on
the module, but may be switched off for those few applications that do
not require a Terminator at the fieldbus power supply.
The F101-Px and F102-Px modules can be powered from a supply between 19.2
- 30.0V DC. The F104-Px can be powered from a power supply between 10 to
30V DC; a range that easily accommodates typical 12V and 24V
solar-powered battery systems. The incoming power for all module types
can be applied via a top-mounted connector, which supports onward looping
of power wiring, or by using a proprietary plug-in connector on a
DIN-rail bussing system.