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.
• P
ress the Test button. The module conducts a number of self-tests.
•
If the tests are successfully completed, record this on the installation
record.
• T
urn off the power supply to the unit.
Test with TTDM test plug.
• T
o 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.
• T
urn 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
1
1
1
NC NO COM NC NO COM
15
16
17
18
19
20
NC NO COM NC NO COM
21
22
23
24
25
26
NC NO COM NC NO COM
27
28
29
30
31
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
1
1
1
NC NO COM NC NO COM
15
16
17
18
19
20
NC NO COM NC NO COM
21
22
23
24
25
26
NC NO COM NC NO COM
27
28
29
30
31
32
Monitoring circuit
(alarm on closed circuit)
Relays wired
in parallel
Alarm on closed circuit
bs
bt
ck
bs
bt
ck
15 16 17
20
19
18
21 22 23
26
25
24
27 28 29
32
31
30
LEAK RELAY
SERVICE RELAY
FAULT RELAY
NC NO COM NC NO COM
NC NO COM NC NO COM
NC NO COM NC NO COM
bs
bt
ck
