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Reference Manual
00809-0100-4696, Rev AA
September 2004
Rosemount 848L
www.rosemount.com
Section 4 Operation and Maintenance
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1
Foundation Fieldbus Information . . . . . . . . . . . . . . . . . . . page 4-1
Hardware Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-2
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-3
SAFETY MESSAGES Instructions and procedures in this section may require special precautions to
ensure the safety of the personnel performing the operations. Information that
potentially raises safety issues is indicated by a warning symbol ( ). Please
refer to the following safety messages before performing an operation
preceded by this symbol.
Warnings
FOUNDATION FIELDBUS
INFORMATION
FOUNDATION fieldbus is an all-digital, serial, two-way, multidrop
communication protocol that interconnects devices such as transmitters and
valve controllers. It is a local area network (LAN) for instruments that enables
basic control and I/O to be moved to the field devices. The Rosemount 848L
uses F
OUNDATION fieldbus technology developed and supported by Emerson
Process Management and the other members of the independent Fieldbus
Foundation.
Failure to follow these installation guidelines could result in death or
serious injury.
• Make sure only qualified personnel perform the installation.
Electrical shock could cause death or serious injury.
• If the device or sensors are installed in a high voltage environment and a fault
condition or installation error occurs, high voltage may be present on transmitter
leads and terminals.
• Use extreme caution when making contact with the leads and terminals.