Raychem TraceTek TTDM-1, Руководство по эксплуатации и обслуживанию, Страница: 16 / 19

SI H/W Error A self-test of the Sensor Interface Hardware has
failed; the unit needs repair.
✓
SI H/W Recovered The hardware problem has been corrected.
Service Service Req’d A small amount of current is flowing between
the two sensing wires; this usually indicates
something is contacting the sensing cable that
should be investigated and corrected.
✓
Service Clear The condition requiring service has been cleared.
User action {Settings} Changed When a user changes settings, the name of the
setting, the time, and date are recorded in the
Events History log.
Alarm Silenced
Reset
Type of
Event
Message Description
Power Power Down The time power was last supplied is stored in
nonvolatile memory, and is entered into the
Events History Log when power is restored.
Restart The Events Log history records when power is
supplied to the unit, or when the unit is manually
restarted.
Leak Leak Liquid detected at the location displayed.
Re-alarm Occurs under three different situations:
• Location changed past re-alarm threshold;
TTDM displays most recent location (without
brackets). This likely means the leak is moving
(or drying).
• New location detected more than 25 ft (8 m)
from original location; TTDM displays most
recent “average” location in square brackets.
This may indicate a new leak, or a new point of
contact with a serpentined cable.
• Automatic re-alarm after the Re-alarm interval
(a user setting) if the leak condition still exists.
✓
Leak Cleared Displayed when cable returns to normal after leak.
New Leak A new leak has been detected after an earlier leak
was cleared but not Reset.
Fault Cable Break Loss of continuity in both detection loops; may
be broken or disconnected sensing cable, jumper
cable, leader cable, or connections.
YB Loop Break Break in the Yellow-Black sensing cable loop.
RG Loop Break Break in the Red-Green sensing cable loop.
Loop Imbalance Resistance of the two loops differs by more than
25%; this may indicate the cable has been damaged.
✓
Cable Restored Displayed when cable returns to normal after any of
the faults noted above.
SI Comm Error Communications problem between the User Interface
and Sensor Interface boards, which may be due to a
faulty connection or damaged ribbon cable.
✓ SI Comm Recovered Communications between UI and SI have
been restored.
Appendix 2 - Events Glossary
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