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Instruction Manual
IM-106-5500, Original Issue
August 2005
CCO 5500
6-4
Display message ‘Waiting for Reference’
Possible Cause Test Result Action
Reference wave
failure
Checking wiring
between power supply
and signal processor
and also between
power supply and
transmitter
Wiring OK Proceed to next test
Wiring incorrect Correct wiring
Check ref. wave in
power supply - use
oscilloscope @
terminals 4 and 5
37 Hz square
wave approx.
12V - OK
Proceed to next test
See above - not
OK
Proceed to next
possible cause
Check ref. wave in
signal processor - use
oscilloscope @
terminals 2 and 5
37 Hz square
wave approx.
12V - OK
Contact your
Rosemount Analytical
supplier
See above - not
OK
Check and rectify
wiring/continuity
between power supply
and signal processor
Chopper motor failure
in transmitter
Check if chopper blade
is rotating
No Proceed to next test
Yes Contact your
Rosemount Analytical
supplier
Replace chopper
motor
Fault clears No further action
Fault continues Contact your
Rosemount Analytical
supplier
Data valid LED not illuminated
Possible Cause Test Result Action
Analyzer fault
condition
Interrogate fault status
in Mode 4
*All Clear* Contact your
Rosemount Analytical
supplier
Fault condition
identified
Proceed to relevant
symptom
Reference failure
Possible Cause Test Result Action
Reference wave
failure
Proceed as for
symptom 3
Fault clears No further action
Fault continues Contact your
Rosemount Analytical
supplier