Rosemount TankRadar Rex DAU 2100, Service Manual

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6-1
Rosemount Tank Radar Rex
Chapter 6 Troubleshooting
Service Manual
308012En, Ed.2
May 2013
6. Troubleshooting
SYMPTOM CAUSE ACTION
No contact with
RTG Faulty TRL/2 bus connection. Check TRL/2 bus wires.
Incorrect address or Unit ID. Check and correct address and
Unit ID in TankMaster.
Analyze communication. Check LEDs in FCU (if a FCU is
included).
Field Bus connected to wrong
communication port on the PC. Check address of unit and check
communication port for correla-
tion.
Incorrect or faulty cable connec-
tion between PC and FBM. Check that all signals of the RS
232 are connected according to
installation drawing.
Unit connected to wrong field bus
port of the FCU (if an FCU is
included). Check that unit is connected to the
correct field bus port on the FCU.
Group Bus connected to wrong
communication port on the PC (if
an FCU is included). Check dress of unit and check
communication port for correla-
tion.
Faulty FCM card (if an FCU is
included). Exchange FCM cards to identify
the faulty card.
Faulty Field Bus Modem, FBM. Replace FBM.
No contact with
DAU Same as above. Check the items above.
No contact with associated RTG. Check the items above.
Incorrect configuration of RTG. Check the RTG configuration in
TankMaster.
Incorrect power supply from RTG Check power supply by measuring
the voltage between pins 6 and 7
on DAU connector. The voltage
should be about 5.5 V. Check Bar-
rier board in Electronic Unit in
RTG.
Not possible to
write to DAU or
FCU No contact with unit Check unit according to the previ-
ous page
Write protection switch in wrong
position Put switch in write enable position