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Raychem TraceTek TTDM-1, Руководство по эксплуатации и обслуживанию, Страница: 14 / 19

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Change Password

Enter the new password (using the arrow keys) and press Enter.

Don’t forget your password! Write it down in a safe place!

Hint: If password protection is not required, set the password to 0000. After that, you
will not be prompted for a password. 

Leak Settings

You gain access to the Leak settings through the View/Edit Settings Menu, which is on
the main menu (see page 25 for the menu structure).

Re-alarm distance

This is the distance over which the electrical center of the leak must move before TTDM will
re-alarm. It can be set between 3 ft (1 m) and 20 ft (6 m); the factory default is 5 ft (2 m).

Re-alarm interval

The TTDM can be made to re-alarm automatically if a leak has not been cleared after a certain
length of time. Choose from:

• Never (factory default)
• 8 hr
• 12 hr
• 24 hr

Hint:  Use this to automatically alert the next shift when the system has an uncleared leak. 

Auto-reset

By default, TTDM requires a manual reset following a leak event. This allows the user to,
for example, verify that any equipment controlled with the Leak relay is ready to be
switched back on.

TTDM can be set to “auto-reset” following a leak. In this case, the leak relay will revert to
the normal state as soon as the leak has been cleared.

• Select: Auto-reset – On

Audible alarm

The audible alarm may be disabled if not required.

• Select: Audible Alarm – Off

Hint: The volume may be adjusted (23 on foldout).

You gain access to the system’s settings through the View/Edit Settings Menu, which is
on the main menu (see “Appendix 1 - “Menu Structure” on page 25). Four types of set-
tings are available:

• General
• Leak
• Ports
• Self-Test

In certain parts of the menu structure, settings may be changed only after entering a password.

Entering a Password

When an attempt is made to change a restricted setting, a password prompt will appear.
Proceed as follows:

• Use left/right arrow keys to move to each digit.
• Use the up/down arrows to increase/decrease the number.
• Press Enter when complete.

The module is supplied from the factory with the password 0010. However, the password
may be changed if required (see the explanation under “General Settings” below).

Note: Once the password is entered, it remains in effect (allowing access) until exit from the main
menu to the normal monitoring screen, or until there has been no keypad activity for 30 minutes.

Changing a Setting

When the value or selection for a setting has been changed, either:

• Press the Enter button to accept the change.
• Press the Esc button to cancel the change.

General Settings

You gain access to the General settings through the View/Edit Settings Menu, which is on
the main menu (see page 25 for the menu structure).

Date/Time 

Use left/right arrow keys to select each digit. Use the up/down arrow keys to
increase/decrease the number.

Units

Use the cursor to select feet, meters, or zones as required. Note: Do not choose zones
unless the system includes only zone sensing cables with zone connectors.

Password:

0000

^

0000...4095

Changing Settings (View/Edit Settings)

22

23

Содержание TraceTek TTDM-1

Страница 1: ... 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...

Страница 2: ...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 sock...

Страница 3: ...eries 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 occurr...

Страница 4: ... 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 area...

Страница 5: ...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 whethe...

Страница 6: ...ine 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 TTD...

Страница 7: ...t see Auto Reset under Leak Settings on page 23 Once the Reset button is pressed the relay returns to normal the red Leak LED extinguishes and the LCD display changes System Normal 16 53 14 Feb 1996 Leak 10 ft Leak Cleared Press Reset 16 30 14 Feb 1996 If the TTDM unit has been installed correctly and the system is clear the LCD display will appear as follows Leak When liquid is detected the follo...

Страница 8: ...x 6 The TTDM module constantly monitors to see whether current is passing between the loops When the system is normal there is no current passing between the loops When there is a leak on the system the maximum current flows just 270 µA the sensing cable operates on low voltage and is safe to touch If however the TTDM module detects a lower but significant level of current flow between the loops i...

Страница 9: ...ed A connection is damaged There is a problem with the module What the Module Does The following shows how the alarm display would appear if the fault were caused by a broken or disconnected cable The TTDM would display a different message for a differ ent type of fault such as a loss of continuity in only one of the sensing loops When a fault condition is detected the following occur An audible a...

Страница 10: ...vents in memory TTDM gives a direct indication of multiple events that is events which happen after an initial leak but before the module is manually reset The first line of the display always indicates where the liquid was first detected This location is the most useful in identifying the source of the leak The second line displays the most recent event For example The second line flashes to high...

Страница 11: ...eqÕd 237 16 53 28 Feb 1996 16 17 Additional Leak If liquid contacts the sensing cable away from the initial leak the module will re alarm If the location is distant from the last alarm the TTDM shows a location in square brackets Brackets indicate that the value shown requires interpretation when an additional leak occurs the value represents the electrical center of the leaks The display also pro...

Страница 12: ...n store up to 512 events If 512 events are already stored the oldest event is discarded as a new event is registered When this has occurred the Events History leaves the bottom line of the display blank Contact Raychem for assistance if you wish to clear the event history Events History Leak 250 ft 09 01 13 Feb 95 21 of 23 Events History Leak Cleared 11 33 15 Feb 95 22 of 23 Events History Reset 0...

Страница 13: ... the location of the leak see Appendix 6 for detail SI Status UI Status These hexadecimal values indicate the current status of the Sensor Interface and User Interface respectively and may assist factory personnel providing diagnostic support SI Comm This indicates the success rate in percent for communications between the Sensor Interface and User Interface boards A value below 90 may indicate a ...

Страница 14: ...djusted 23 on foldout You gain access to the system s settings through the View Edit Settings Menu which is on the main menu see Appendix 1 Menu Structure on page 25 Four types of set tings are available General Leak Ports Self Test In certain parts of the menu structure settings may be changed only after entering a password Entering a Password When an attempt is made to change a restricted settin...

Страница 15: ...orked Contact Raychem for additional information Terminal This selection provides a real time display of communications to and from a modem or host system which can be helpful for diagnostic purposes Self Test Settings You gain access to the Self Test settings through the Self Test Menu the last item on the View Edit Settings Menu see page 25 for the menu structure The Self Test Menu allows indivi...

Страница 16: ... 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 cab...

Страница 17: ... It is recommended that the TraceTek system be thoroughly checked twice a year Such a check will identify conditions that adversely affect the leak locating capability of the sys tem More frequent checks may be required if the sensing cable is repeatedly exposed to leaks or if construction or repair work is done where the sensing cable may be exposed Contact your local Raychem TraceTek representat...

Страница 18: ... 23 24 25 26 NC NO COM NC NO COM 27 28 29 30 31 32 4 20 mA Current Transmitter The TTDM adjusts its 4 20 mA output based on the leak detection status as detailed below Fault conditions Output mA Description 0 Electronic fault or loss of power 1 00 Fault communications between SI and UI boards 2 00 Fault cable break 3 00 Fault cable damage loop imbalance 3 50 Service Required alarm Normal condition...

Страница 19: ...VLocation Leak current resistance location Sensing cable TTDM Current RLocation RS to S Red Green Yellow Black Red Green Yellow Black Relay wiring options The illustrations below show how relays 15 16 and 17 on foldout 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 ...

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