H56874 4/03
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TTDM-128
User Manual
TO CLEAR THE CABLE
Investigate the cause of the alarm and conduct cleanup or maintenance accordingly.
HINT: If material causing a service alarm is spread throughout the system, it is often
useful to subdivide the system; see INVESTIGATING LEAKS AND FAULTS on page 42
for further information.
Fault Events
INTRODUCTION
Several conditions could lead to a fault alarm:
▪
A cable is disconnected.
▪
A cable is damaged.
▪
A connection is damaged.
▪
A specific SIM module is damaged.
▪
Communication is lost between the TTDM-128 and one or more SIM modules.
WHAT THE TTDM-128 MODULE DOES
The following shows how the alarm display would appear if the fault were caused by a
broken or disconnected cable:
CH01 USER_LABEL_0001
Cable Break
HH:MM DD-MON-YYYY
The TTDM-128 would display a different message for a different type of fault, such as a
loop imbalance or loss of communication to a specific SIM module.
When a fault condition is detected, the following occur:
▪
An audible alarm sounds.
▪
The red Fault LED illuminates.
▪
The LCD displays a message appropriate to the fault condition.
▪
The interfaces signal the event (Fault relay, 4-20 mA, and serial port).
TO REMEDY THE PROBLEM
Find the problem and rectify. This may mean reconnecting the cable, or finding the
damaged section and replacing it. If the cause of the fault is not obvious by visual
inspection, it is often useful to subdivide the system and test individual sections with a
TraceTek Portable Test Box.
As soon as the fault is rectified, the relay, LED, and LCD display return to their normal
state.
Summary of Contents for TraceTek TTDM-128
Page 1: ...LEAK DETECTION powered by TTDM 128 TraceTek Leak Detection Master Module User Manual...
Page 2: ...H56874 4 03 www tycothermal com 1 650 474 7400 2 2003 Tyco Thermal Controls LLC...
Page 4: ...H56874 4 03 www tycothermal com 1 650 474 7400 4...
Page 15: ...H56874 4 03 www tycothermal com 1 650 474 7400 15 TTDM 128 User Manual TTDM 128 Features...
Page 28: ...H56874 4 03 www tycothermal com 1 650 474 7400 28...
Page 40: ...H56874 4 03 www tycothermal com 1 650 474 7400 40...
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