Raychem TraceTek TTDM-2, TraceTek TTDM-1, TraceTek TTDM-24 Operation And Maintenance Manual

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TraceTek
Long-Line and Zone
Leak Detection and Location Systems

Operation and Maintenance Manual

For TTDM-1, TTDM-2, and TTDM-24
Alarm and Locating Modules

Belgium

NV Raychem SA
Diestsesteenweg 692
3010 Kessel-Lo
Tel [phone]
Fax [phone]

Korea

Raychem Korea Limited
831-45 Yeuksam-Dong
Kangnam-Ku
Seoul 135-080
Tel [phone]
Fax [phone]

United Kingdom

Raychem Ltd.
Faraday Road
Dorcan, Wiltshire SN3 5HH
Tel [phone]
Fax [phone]

United States

Raychem Corporation
300 Constitution Drive
Menlo Park, CA 94025-1164
Tel [phone]

[phone]

Fax [phone]

© 1995 Raychem Corporation Printed in USA H55472-L PCN 137021 3/97 TraceTek is a trademark of Raychem Corporation.

All information, including illustrations, is believed to be reliable. Users, however, should independently
evaluate the suitability of each product for their application. Raychem makes no warranties as to the
accuracy or completeness of the information, and disclaims any liability regarding its use. Raychem’s only
obligations are those in the Raychem Standard Terms and Conditions of Sale for this product, and in no
case will Raychem be liable for any incidental, indirect, or consequential damages arising from the sale,
resale, use, or misuse of the product. Specifications are subject to change without notice. In addition,
Raychem reserves the right to make changes—without notification to Buyer—to materials or processing
that do not affect compliance with any applicable specifications.

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Identifying TTDM Features

External View [A]

(1) LCD display gives up-to-date

information regarding the condition of
the system.

(2) Icons and LEDs (light emitting

diodes):
Monitoring LED green

Service (Required) LED yellow
Leak LED red
Fault LED red

(3) (Self) Test key

Can be used at any time to
verify the correct operation of the
module. The module performs a
series of self-diagnostic checks.

(4) Silence key

Used to silence audible alarms

(5) Reset key

Used to reset the leak alarm relay
after a leak has been cleared.

(6) Menu keys

The menu button provides access to
various features that may be viewed
and/or edited. The menus are navigated
with the arrow keys together with the
Esc (escape) and Enter keys.

Internal View [B]

(7) User interface board

(8) 4–20 mA board

(9) Sensor interface board

(10) Motherboard

(11) Power supply board

(12) Fuse (200 mA, 250 V)

(13) Power cable terminal block

(14) Ground (earth) stud

(15) Fault relay cable plug and socket

(16) Leak relay cable plug and socket

(17) Service relay cable plug and socket

(18) 4–20 mA port plug and socket

(19) RS-232/485 port plug and socket

(20) Sensing cable plug and socket

(21) Reserved for future use

(22) Ribbon cable

(23) Volume adjustment

(24) LCD contrast adjustment

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ResetTest

EnterEsc

Menu

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TTDM

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Contents

1

Identifying TTDM Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii

Leak Detection System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Connection to Other Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

The Basic Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Leak Detection and Location Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Service Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Fault Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Multiple Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Navigating the Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

The Events History Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Diagnostics (System Status) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Changing Settings (View/Edit Settings) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Appendix 1 - Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Appendix 2 - Events Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Appendix 3 - Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Appendix 4 - Interface Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Appendix 5 - Wiring Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Appendix 6 - TraceTek Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Please read before use

Please read these instructions carefully and keep in a safe place (preferably close to the
module) for future reference.

The instructions provided in this booklet must be followed carefully to ensure proper
operation. If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.

Description

The TTDM module has been specifically designed for use with TraceTek sensing cables
(all TT1000, TT3000, and TT5000 series sensing cables, and all TT100, TT300, and TT500
series long-line sensing cables). TTDM can monitor up to 5000 ft (1500 m) of sensing
cable and can detect and locate the presence of liquid at any point along the cable. The
module also monitors the system for other alarm conditions:

• Service required

• Fault
Each “event” (service, leak, or fault) is recorded in an Events History with the time and

date of occurrence. This allows easy tracking of events.

Preparation

Before operation, the instructions in the “TTDM Installation Instructions” that accompany
the system must be followed so that the module is properly:

• Mounted

• Powered (wired and energized)

• Connected to a TraceTek sensing cable with a TraceTek jumper or leader cable

• Commissioned (a completed commissioning form should be supplied)
If these steps have not been taken, please refer to the “TTDM Installation Instructions” in

order to complete the installation.
In addition, there should be a system map, which indicates the sensing cable layout with

reference landmarks throughout the system.

Notes

• Throughout this manual, the examples shown use distances in feet.

• Later versions of software may provide new features and change certain other details.
This manual documents UI Version 1.05.

Introduction

iii

The TraceTek Zone System

The TraceTek zone system is a leak detection and location system that monitors many
separate locations from one point. The zone system consists of the TTDM Alarm and
Locating Module and up to 100 separate sensing zones interconnected by one run of
jumper cable.

Each sensing zone consists of a zone connector and one 5 ft (1.5 m) length of sensing
cable. If liquid is detected, the module signals the alarm and displays the zone where the
leak has occurred. The zones are numbered sequentially by the system electronics.

Important: In a TraceTek zone system, only

zone

sensing cables (TT3000 zone or
TT5000-series zone) may be used. Each sensing cable plugs into a zone connector.
The last zone connector must have an end termination.

ModeResetTest

Test

POWERONZONE 1ONZONE 2

ON

ALARM

EnterEsc

Menu

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TTDM
Alarm and
Locating Module

Zone
sensing
cable

Jumper
cable

End
termination

Zone
connector

Modular

leader

cable

TraceTek Longline System

A TraceTek longline system provides distributed leak detection and location to monitor
long lengths and wide areas. The system consists of the TTDM Alarm and Locating
Module and up to 5000 ft (1500 m) of sensing cable.

The sensing cable detects liquid at any point along its length. The module then signals the
alarm and displays the distance to the leak.

The longline system includes sensing cable and circuit components (leader cable, jumper
cables, end terminations, weighted lengths, and branching connectors) with connectors
that allow components of the system to plug together.

The weighted length resistor simulates a 15 ft (5 m) length of sensing cable. Installed at
the boundary between two areas, it allows the user to clearly identify the area where the
leak has occurred.

The branching connector enables the sensing cable to be branched. An end termination
completes each branch. At the branching connector, the system first counts the sensing
cable along the branch (middle connector), before it continues with the main run. Two
built-in 15 ft (5 m) weighted length resistors allow the user to clearly identify on which
leg a leak has occurred near the branching connector.

An important part of the TraceTek longline system is the system map, a sensing cable
layout plan with actual distance readings. Thus, in case of an alarm, the location of the event
can be determined quickly. The map should be placed near the Alarm and Locating Module.

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ModeResetTest

Test

POWERONZONE 1ONZONE 2

ON

ALARM

EnterEsc

Menu

R PROTRAC2

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TTDM
Alarm and
Locating Module

Modular
leader cable

Jumper
cable

Modular
branching
connector

Weighted
length

Jumper

cable

Sensing

cable

End
termination

Modular end
termination

Sensing

cable

Sensing

cable

2 3

Leak Detection System Description

Serial Port

The TTDM module has a serial port (marked EXT COM PORT) that can be configured for
use either as an RS-232 or RS-485 transceiver. The factory default is RS-232, and is
suitable for connecting the TTDM to single devices up to 50 ft (15 m) away. The standard
configuration is RS-232 full-duplex with no hardware handshaking, which is suitable for
connection to many devices (such as a remote host PC, laptop, or modem).

The RS-232/485 port (19 on foldout) is connector J13 on the TTDM motherboard. The
pinouts for connector J13 on the TTDM motherboard are listed below, with functions for
RS-232 usage noted.

Pin Desc. Use

J13-5 RX/A Receive data
J13-6 TX/B Transmit data
J13-7 RTS Request to send —

for hardware handshaking

J13-8 CTS Clear to send —

for hardware handshaking

J13-9 +5V/DTR +5V supply/DTR if

needed by modem

J13-10 GND Supply return

Note: For further information, see Appendix 4 - Interface Details.

Relays

TTDM has three relays:

• Service

• Leak

• Fault
Each relay provides two Form-C relay contacts, with normally open and normally closed

contacts both provided. The relays are

de-energized to indicate an alarm

condition. The

diagram below shows the relay status when each is in an alarm (de-energized) state.

(For other connection options, please consult Appendix 5 - Wiring Details.)

4–20 mA

The module is equipped with an analog 4–20 mA interface. The TTDM adjusts its current
output based on whether an alarm condition exists, and (when a leak is detected) the
location of the leak. Its output can be scaled to make full use of the 4–20 mA range for
the length of sensing cable connected.

Note: The current transmitter is isolated from the sensing circuitry and therefore requires
an external 24 Vdc power supply.

The 4–20 mA output port (18 on foldout) is connector J2 on the TTDM motherboard,
with terminals as noted in the following table:

Pin Desc. Use

J2-11 IRTN Current loop return
J2-12 IOUT Current output
J2-13 +V 24 Vdc supply (required)
J2-14 +VRTN 24 Vdc common (required)

Note: More information about operation and testing is found in Appendix 4 ­Interface Details.

15 16 17 201918 21 22 23 262524 27 28 29 323130

LEAK RELAYSERVICE RELAY FAULT RELAY

4 5

Connection to Other Devices

Leak

When liquid is detected on the sensing cable, this red Leak LED illuminates. Note that the
green LED remains illuminated; the unit continues to monitor for leaks and spills. This is cov­ered more fully in the following section “Leak Detection and Location Events”, on page 8.

Fault

When the TTDM module detects a fault—either a cable fault, or an electronics fault—it
lights this red LED. Note that in a Fault condition, the TTDM module is unable to detect a
leak. For further information, see the “Fault Events” section on page 12.

LCD Display

Line 1 indicates the original location of a leak.
Line 2 indicates the present status (except when a leak is initially detected, since the ini-

tial location is always shown on line 1).

Line 3 may advise action or provide special instructions.
Line 4 displays the current time and date (the colon blinks once a second). To highlight

the present status, the line of the display with the most recent event flashes.

Hint: The LCD contrast may be adjusted (24 on foldout).

Leak 10 ft
Leak Cleared
Press Reset
16:30 14-Feb-1996

The Icons

The Icons (2 on foldout) represent the four main states of the TTDM module:

Monitoring

This green LED indicates that the TTDM is monitoring the sensing cable. If something
happens that makes it impossible for the TTDM to monitor the sensing cable (for exam­ple, the cable is broken), the Monitoring LED will extinguish.

Service

The TTDM is able to give advance warning of potential problems. This yellow Service LED
illuminates to indicate that service is required. Note that the green LED remains illuminated;
the unit continues to monitor for leaks during a Service alarm.

See the “Service Events” section on page 10 for further details.

Monitoring
Service
Leak
Fault

Green Yellow Red Red

6 7

The Basic Events