TTDM-128
TraceTek Leak Detection
and Location Module
General Information
Please read these instructions carefully and keep them in a safe place
(preferably close to the TTDM) for future reference. These instructions
must be followed carefully to ensure proper operation.
The TTDM Alarm and Locating Module has been designed specifically for use
with TraceTek sensing cables, point sensors, sensor interface modules and
relay modules. The TTDM can directly monitor up to 1500 m (5000 ft) of
sensing cable, and large networks of remote leak detection modules.
An external disconnect device and appropriate branch circuit protection
(no more than 20 amp rating) should be provided for the TTDM. The
disconnect device should be clearly marked as such. Follow all national
and local codes and regulations applicable to the installation.
Installation Instructions
Shock hazard. Shut off power before operating enclosure door.
Installation items (not supplied)
• Wall fasteners for surface mounting (four screws)
Tools required
• Drill or hole punch for electrical conduit entries
• Phillips (cross-head) screwdriver
• Small flat-head screwdriver
Storage
Keep the module in a dry place prior to installation to avoid possible damage to internal components.
Product Information
TTDM-128 115 Vac +15%, –20%; 50/60 Hz
230 Vac ±10%; 50/60 Hz
TTDM-128-24V 24 Vac +5%, –35% 24 Vdc ±20%
Power consumption 6 VA (5 W) for TTDM-128
12 VA (10 W) for TTDM-128-24V
Installation categories Overvoltage Category II, Pollution Degree 2
Built-in relays Number: Three (Service, Leak, Fault)
Type: DPDT
Rating: 5 A at 250 Vac/24 Vdc
Temperature Storage: –18°C to 60°C (0°F to 140°F)
Operating: 0°C to 50°C (32°F to 122°F)
Enclosure NEMA 12; IP 54
Approvals and Certifications
LISTED
76LJ
SIGNAL SYSTEM UNIT
Type NM
LEAK DETECTION
powered by
®
TTDM-128
TraceTek Leak Detection
and Loction Module
TTDM-128 Installation Instructions
2
ResetTest
EnterEsc
Menu
TraceTek
TTDM
1
2
6
3
4
5
798 bk
bl
bm
bn
bo
bp
bq
brbsbtck
dk
clcmcnco
PL PL PL
cp
cq
cr
cs
ct
PL
1 LCD display
2 LEDs with icons
3 Test key
4 Silence key
5 Reset key
6 Menu keys
7 User Interface board
8 4–20 mA board (optional)
9 Sensor Interface board
bk Motherboard
bl Power supply board
bm Fuse (500 mA, 250 V, time delay)
bn Power cable terminal block
bo Voltage Selector Switch
bp Spare fuse
bq Ground/earth stud
br Gland plate
bs Fault relay cable plug and socket
bt Leak relay cable plug and socket
ck Service relay cable plug and socket
cl 4–20 mA port plug and socket
cm RS-232/485 host port plug and socket
cn Sensing cable plug and socket
co RS-485 TraceTek Network Plug
& Socket
cp Ribbon cable
cq Host port RS-232/485 selector
cr 9 pin RS-232 socket
cs Reset pins
ct Volume adjustment
dk LCD contrast adjustment
PL indicates power limited circuits
Note: To avoid damage to the unit, store the TTDM module in its
cardboard box until construction is complete.
Select the mounting position.
Choose a location indoors where the module will be protected from
the elements and temperature extremes.
• Remove the module from its carton. Do not remove the protective film
from the membrane on the front of the unit.
• Open the enclosure door using a flat-blade screwdriver or a coin.
Important: The TTDM is an electronic unit. During installation, take
the following precautions to avoid damage to its electronic components:
• Handle with care, avoid mechanical damage.
• Keep the electronics dry.
• If handling circuit boards, hold them by their edges to avoid physical
contact with electronic components.
•Avoid exposure to static electricity.
•Avoid contamination with metal filings, liquids, or other foreign matter.
Installing the TTDM
WARNING: Ignition hazard. Do not mount the TTDM unit in a
hazardous location. Sensing cable connected to the TTDM may (subject
to approvals restrictions) be located in hazardous locations, but the
module itself must be in an ordinary area.
Note: The TraceTek sensing circuit is power limited, so the TraceTek
leader or jumper cable and the power supply cable must not run in
the same conduit.
TTDM-128 Installation Instructions
3
Mounting the Enclosure
Install the enclosure using the four screws in the prepunched 8 mm (5/16inch) mounting holes with centers as shown in Figure 3. If plastic plugs
are in the mounting holes, remove them. Make sure the rubber elastomer-
ic washers (provided in the shipping box) are aligned to seal around the
mounting screws to maintain the NEMA 12 and IP54 ratings.
Making Enclosure Entries Using the Removable Gland Plate
The removable gland plate bron the bottom edge of the enclosure provides a location to feed wires into the enclosure (Figure 4). The plate is
attached with eight screws. Unscrew these to remove the gland plate,
then you can drill or punch holes in the gland plate appropriate for your
application. There is sufficient width for up to five 1/2-inch or M20 holes.
Remove all metal filings and dust from the gland plate before remounting. Take care not to damage the gasket on the gland plate. You must
secure the gland plate ground wire to the chassis ground lug after
remounting the gland plate.
Connect the power wiring.
• Open door of TTDM enclosure.
• For 120/220 Vac power supply: select the appropriate
voltage using the voltage selector switch
bo
.
• Pass the power cable through the gland plate adapter/bushing into the
enclosure.
• Connect the ground/earth wire to the ground/earth stud
bq.
• The ground/earth stud is marked with this symbol:
Note: Proper grounding/earthing is important to avoid
the possibility of electromagnetic interference.
Note: Ground/earth wire must be longer than the other two
conductors for strain relief.
• Remove the power cable plug from the socket
bn
on the power supply
board
bl
.
• Connect the power supply wires to the two-pin terminal block
bn
on
the power supply board. Use L2 for neutral, if present.
Note: The terminals can accept wires 10 AWG (4.7 sq. mm) or smaller.
We recommend 12 AWG (3.0 sq. mm) wires, with branch circuit
protection sized accordingly. Cable should have a temperature
rating of 65°C minimum.
• Insert the power cable plug back into the socket on the power supply
board
bl
.
38
39
L1
L2
VAC IN
Use L2
for neutral,
if present.
Do not
exceed
maximum
voltage
rating
120/240 Vac power supply
24 V power supply
bl
bn
Do not
exceed
maximum
voltage
rating
bl
bn
bo
110
220
Connecting the Power Cable and Relays
Gland plate
Gasket
Figure 4
Screws
Grounding wire to
attach to ground
lug in enclosure
terminal 62.
br
300 mm
(11.81 in)
Figure 3
261 mm
(10.26 in)
240 mm
(9.45 in)
200 mm
(7.87 in)
20 mm
(0.79 in)
20 mm
(0.79 in)
mounting hole
(four places)
8 mm (5/16 in)
Attachment points
for motherboard
(four places)
TTDM-128 Installation Instructions
4
Connect the alarm relays.
The TTDM has three relays, for service ck, leak bt, and fault bs.
Each relay provides two Form-C relay contacts, and normally open
and normally closed contacts are both provided. The relays are
de-energized to indicate an alarm condition. The illustration shows
the relay status in the alarm (de-energized) state.
The illustrations that follow show how relays can be jumpered together
to allow remote monitoring of the TTDM status with only a single pair of
wires. The TTDM de-energizes its relays to signal an alarm condition.
Therefore, loss of power, as well as any other type of alarm, would signal
the remote alarm.
Note: The relay plugs can accept wires 10 AWG (4.7 sq. mm) or smaller.
We recommend 18 AWG (1.0 sq. mm) wires. Cable should have a
temperature rating of 65°C.
Note: Maximum load for relays is 5 A.
Test after supplying power.
• Close and latch the enclosure door.
• Supply power to the unit. When power is supplied, the green LED illu-
minates, and the unit goes through a series of self-tests. After the
start-up sequence is complete, the module should report a fault alarm
(this is normal; there is no sensing cable attached). Press the red
Silence key to silence the audible alarm. Verify that the display appears
similar to the one shown here (the time and date may be different):
If anything other than the above occurs, check all connections.
If unit still does not appear to operate properly, contact a TraceTek
representative for assistance.
•Press the Test button. The module conducts a number of self-tests.
• If the tests are successfully completed, record this on the installation
record.
•Turn off the power supply to the unit.
Test with TTDM test plug.
•To conduct a more complete test, use the TraceTek TTDM-CTP test plug
(packed in a plastic bag in the TTDM packaging). Insert the plug into the
sensing cable socket
cn
on the sensor interface board 9.
• Close and latch the enclosure door.
• Supply power to the unit. When power is supplied, the unit will again go
through a series of self-tests. If the test plug is in the sensing cable socket, after
the module completes the start-up sequence it should sound and display a leak
alarm. Press the Silence key to silence the audible alarm. The red Leak LED and
green Monitoring LED should both be illuminated, and the screen display
should appear similar to the one shown here (depending on the setting).
• If anything other than the above occurs, check all connections. If unit still does
not appear to operate properly, contact a TraceTek representative for assistance.
• If the test is successfully completed, record this on the installation record.
•Turn off the power supply to the unit.
• Remove the TTDM-CTP test plug and store it in a secure place for future use.
• If not immediately connecting the sensing cable, or TraceTek network, close
and latch the enclosure.
CH01
Leak 538 ft
14:37 02-Jan-03
Depending on the units selected, the leak distance should
be within the values below:
feet: 527 to 548 ft
meters: 160 to 168
zones: 11
CHO1
Cable Break
14:23 02-Jan-03
Testing the Module
SERVICE RELAY
5A 250V
J6
LEAK RELAY
5A 250V
J25
FAULT RELAY
5A 250V
J9
111
NC NO COM NC NO COM
1516171819
20
NC NO COM NC NO COM
2122232425
26
NC NO COM NC NO COM
2728293031
32
Monitoring circuit
(alarm on open circuit)
Relays wired
in series
Alarm on open circuit
SERVICE RELAY
5A 250V
J6
LEAK RELAY
5A 250V
J25
FAULT RELAY
5A 250V
J9
111
NC NO COM NC NO COM
1516171819
20
NC NO COM NC NO COM
2122232425
26
NC NO COM NC NO COM
2728293031
32
Monitoring circuit
(alarm on closed circuit)
Relays wired
in parallel
Alarm on closed circuit
bsbtck
bsbtck
15 16 17 201918 21 22 23 262524 27 28 29 323130
LEAK RELAYSERVICE RELAY FAULT RELAY
NC NO COM NC NO COM NC NO COM NC NO COM NC NO COM NC NO COM
bsbtck
TTDM-128 Installation Instructions
5
If the TTDM will be used to monitor a sensor directly, follow these
instructions to connect the sensor to the TTDM. If the TTDM is being
used only as a network master, skip to Connecting the TraceTek Network.
Prepare sensing cable.
Ensure that the sensing cable has been installed and tested in accordance
with the instructions provided with the cable.
Make connections.
• Confirm that power to the unit has been shut off.
• Open the enclosure door.
• Feed the end of the TraceTek Leader Cable (or Jumper Cable) through
the gland plate
br
adapter/bushing into the enclosure.
• Remove the sensor cable plug
cn
from the socket on the sensor
interface board
9.
• Connect the four color-coded wires to the Sensor Interface plug.
Important: Observe the color coding. If wires are not connected to the
proper terminals, the leak detection system cannot operate properly.
• Insert the sensing cable plug back into the socket on the Sensor
Interface Board
9.
Install zener barrier, if applicable.
When sensing cable will be located in Class I, Division 1 (Zone 0 or Zone
1 in Europe) hazardous locations, approval agencies require that the
sensing cable be protected with a zener barrier between the sensing
cable and the TTDM module. Contact TraceTek to select the proper zener
barrier.
When installing a zener barrier, wire it in accordance with the instructions
provided with the kit.
If the TTDM will be used as the network master in a TraceTek network,
follow these instructions to connect the communication wiring.
Note: Some TraceTek network configurations will require different
connections for the communication wiring. Please refer to the TTDM-128
User Manual for further details.
Prepare communication cable.
Ensure that the communication cable has been installed and tested.
Make connections.
• Confirm that power to the unit has been shut off.
• Open the enclosure door.
• Feed the end of the communication cable through the gland plate
br
adapter/bushing into the enclosure.
• Remove the J10 cable plug
co
from the socket.
• Connect the positive wire to terminal 3 (485+) and the
negative lead to terminal 4 (485–) of the J10 cable plug.
• Connect the shield wire to the round lug
bq
.
Important: Observe the polarity. If wires are not connected to the proper
terminals, the leak detection system cannot operate properly.
• Insert the J10 cable plug back into the socket
co
.
PL
RS-485 EXT XMTRS
J10
+51S0 ICDM 485+ 485-
123
4
RS-485 cable to
next TraceTek module.
RS-485 (–)
RS-485 (+)
SHIELD
co
bq
Connecting the TraceTek Network
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Class I, Division 1
(Zone 0 or Zone 1 in Europe)
Hazardous Location
Ordinary Area
Zener
barrier
Leader or jumper cable
Jumper cable
Sensing cable
TTDM
RED GRN YEL BLK
333435
36
SENSOR CABLE
PL
Black
Yellow
Green
Red
cn
Connect the Sensing Cable
TTDM-128 Installation Instructions
6
TraceTek and Tyco are registered trademarks of Tyco Thermal Controls LLC or its affiliates.
There are 3 ways to connect the TTDM to a host computer: hard-wired
RS-232, hard-wired RS-485, or standard modular RS-232 cable. For
permanent installations, the hard-wired method is recommended
(either RS-232 or RS-485 as necessary). The modular RS-232 cable
should be used only for temporary connections by trained technicians.
Make connections.
• Confirm that power to the unit has been shut off.
• Open the enclosure door.
• Feed the end of the communication cable through the
gland plate
br
adapter/bushing into the enclosure.
• Remove the J13 cable plug
cm
from the socket.
For RS-232 connection:
• Connect the RX, TX, RTS, CTS and DGND wire
to terminals 5, 6, 7, 8 and 10 respectively.
• Set the host port selector switch
cq
on the
User Interface board
7
to the RS232 position.
For RS-485 connection:
• Connect the positive wire to terminal 5 (RX/A) and
the negative wire to terminal 6 (TX/B).
Set the host port selector switch
cq
on the
User Interface board
7
to the RS485 position.
• Connect the shield wire to the grounding lug
bq
.
• Insert the J13 cable plug back into the socket
cm
.
Power up the system.
After connections are complete, supply power to the unit. The unit will go
through a series of self-tests, and then display the system status. If the
sensing circuit is complete and free of leaks or other problems, the green
Monitoring LED only will illuminate, and the LCD display will appear similar
to that shown at right:
If this is not the case, you can find additional information in the TTDM
Operation and Maintenance Manual supplied with the module.
Commissioning
Your system should be commissioned by an authorized TraceTek representative. The system map is a crucial part of a TraceTek locating system.
The TTDM will give the point along the sensing cable at which liquid has
been detected; the map is essential to show its physical location.
Important: Store hardware and documentation supplied with the
TTDM in a secure place for later use (commissioning, connecting
interfaces, operating).
CH01
System Normal
16:23 02-Jan-03
Start-Up and System Testing
PL
RS-232
cable
RS-485
cable
RS-232/485 EXT COM PORT
J13
DGND
CTS
RTS
TX
RX
PL
RS-232/485 EXT COM PORT
J13
RS-485 (–)
RS-485 (+)
SHIELD
SHIELD
cq
cq
bq
bq
Connecting to a Host Computer
Vertriebsbüro West
Veilchenweg 13
A-4210 Gallneukirchen
T. +43 7235 66910
F: +43 7235 66911
sales@tracetek.at
www.tracetek.at
VertriebsgmbH
Industriestrasse B-4
A-2345 Brunn/Gebirge
T. +43 2236 90300
F: +43 2236 90300/1099
sales@tracetek.at
www.tracetek.at
Important: All information, including illustrations, is believed to be reliable. Users, however, should independently
evaluate the suitability of each product for their particular application. Tyco Thermal Controls makes no warranties
as to the accuracy or completeness of the information, and disclaims any liability regarding its use. Tyco Thermal
Controls' only obligations are those in the Tyco Thermal Controls Standard Terms and Conditions of Sale for
this product, and in no case will Tyco Thermal Controls or its distributors 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, Tyco Thermal Controls reserves the right to make changes—without
notification to Buyer—to processing or materials that do not affect compliance with any applicable specification.
Tyco and TraceTek are trademarks of Tyco Thermal Controls LLC or its affiliates.
Sensor wires (2)
Signal wires (2)
0.92 in
(23 mm)
80˚C
9001
I
S
O
The TraceTek products group is a part of Tyco Thermal Controls,
Tyco International. Tyco Thermal Controls is ISO 9001 certified.
TraceTek sensing cables are approved only when used with an agency
approved TraceTek alarm module.
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