Endress+Hauser Proline Prosonic Flow 93 Operating Instructions Manual page 97

Proline Prosonic Flow 93 FOUNDATION Fieldbus
Endress+Hauser
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Faulty connection to the fieldbus host system
No connection can be made between the fieldbus host system and the measuring device.
Check the following points:
Check the supply voltage  Terminals 1/2
Supply voltage
Transmitter
Check device fuse  ä 113
Device fuse
85 to 260 V AC: 0.8 A slow-blow / 250 V
20 to 55 V AC and 16 to 62 V DC: 2 A slow-blow / 250 V
Fieldbus connection Check the data cable:
Terminal 26 = FF +
Terminal 27 = FF 
• Check pin assignment/wiring  ä 66
Fieldbus connector
(Option) • Check connection between connector/fieldbus port.
Is the coupling ring tightened correctly?
Fieldbus voltage Check that a min. bus voltage of 9 V DC is present at terminals 26/27.
Permissible range: 9 to 32 V DC
Check permissible fieldbus length and number of spurs.  ä 59
Network structure
Basic current Is there a basic current of min. 11 mA?
Bus address Check bus address: make sure there are no double assignments
Bus termination Is the FOUNDATION Fieldbus-H1 network correctly terminated?
(Termination) Each bus segment must always be terminated with a bus terminator at both ends (start and
finish). Otherwise there may be interference in data transmission.
Current consumption, Check the current consumption of the bus segment:
permissible feed current The current consumption of the bus segment in question (= total of basic currents of all bus
users) must not exceed the max. permissible feed current of the bus power supply.
Device Description (DD) Install the DD if you cannot access the manufacturer-specific parameters.
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Ensure you use the correct system files for linking the field devices into the host system.
Appropriate version information can be called up via the following functions/parameters:
Local display:
• HOME  BASIC FUNCTIONS  FOUND. FIELDBUS  INFORMATION 
DEVICE REVISION (6243)
• HOME  BASIC FUNCTIONS  FOUND. FIELDBUS  INFORMATION 
DD REVISION (6244)
FF configuration program:
• Resource Block  Parameter DEV_REV
• Resource Block  Parameter DD_REV
Example (with local display):
Display in the DEVICE REVISION (6243) function  03
Display in the DD REVISION (6244) function  01
Device description file (DD) required  0301.sym / 0301.ffo
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Note!
Troubleshooting
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