Manufacturer:
Relcom
Product Name:
F8xx Redundant Power Supply Systems utilizing F801 Power Modules
Product Description:
Power Supply
Profile:
FOUNDATION Power Supply/Conditioner
More Information:
The F8xx fieldbus power system is designed to provide redundant power for
eight FOUNDATION fieldbusTM H1 segments. Versions are available for
direct integration into all major DCS. Power for the fieldbus segments
is provided by two F801 power modules operating in redundant
configuration (load sharing). Failure alarms, galvanic isolation, power
conditioning and segment termination are incorporated into each F801
module. In simplex applications, a single F801 module may be used.
Termination of the fieldbus segments is automatically maintained when
single or redundant F801 modules are fitted. Each segment has a nominal
output rating of 21.5V, 350mA. When used with a suitably certified
Megablock wiring hub, the spurs may be connected to ExnL or
non-incendive fieldbus instruments with a maximum safety input voltage
of 24V.
For extreme reliability, the module carrier has no components and only
provides interconnections between the power modules and external
connections. It is supported in a rigid metal frame that protects the
circuit board from mechanical damage. Secure DIN rail mounting is
provided by integrated fixings.
Each F801 module monitors the output of the eight fieldbus segments and
indicates an alarm by means of a built-in, normally closed relay if any
of the segments is shorted, or below the minimum output voltage
threshold. Failure of either of the bulk power input supplies is also
annunciated.