nvent Raychem TraceTek TTA-SIM Installation & Operation Instructions page 3

LEADER CABLE CONNECTIONS FOR SENSOR
The TTA-SIM can be used with any of the nVent RAYCHEM
TraceTek family of sensing cables including TT1000, TT3000,
TT5000 and TT5001, as well as float switches and point
probes. Connect the TraceTek leader cable to the lever operated
sensor terminals on the relay unit as shown in Figure 4 and the
following table.
Note: To connect a wire to a lever operated terminal, use a small
flat-blade screwdriver to press down on the lever. Insert the wire
(stripped approx. 6 mm [0.25"]) into the opening in the terminal
block, then release the lever.
Terminal Color Item
R Red
Red / Green Sensor Cable Loop
G Green
Y Yellow
Yellow / Black Sensor Cable Loop
B Black
CONNECTIONS FOR ALARM RELAY (OPTIONAL)
Connections to the TTA-SIM relay are made using the lever
operated cage-clamp terminals located on the relay unit (see
Figure 5). The software programmable TTA-SIM relay contacts
may be used for local or remote annunciation, to control a
valve or other device, or for connection to a control automation
system contact input. The relay can be programmed to alarm on
leak only or on either leak or sensor fault. The relay can also be
programmed to be ON (coil energized) or OFF (coil de-energized)
to signal an alarm (see table below). The relay can be
programmed using a TTDM-128 (see TTDM-128 User Manual).
Programmed
Alarm Condition
Alarm State
No alarms
On (default)
Alarm
Loss of power
No alarms
Off
Alarm
Loss of power
CONNECTIONS FOR TELEMETRY (OPTIONAL)
Telemetry connections to the TTA-SIM are made using the screw
terminals on the TTSIM unit itself (see Figure 6). Cut back the
wires to fit and strip to expose approximately 6 mm (1/4 in) of
conductor and make the connections. Be sure to connect the
shield as indicated.
Terminal Color Item
13 — Shield Drain Wire
14 Black RS-485 (–)
15 Red RS-485 (+)
16 — Shield Drain Wire
17 Black RS-485 (–)
18 Red RS-485 (+)
Figure 4. Sensor Connections
Status at Terminals
10-11 11-12
closed open
open closed
Figure 5. Alarm Relay Connections
closed open
open closed
closed open
closed open
Shielded twisted
pair from Host or
previous TraceTek
module
Shielded twisted
pair to next
Figure 6. Telemetry Connections
TraceTek module
Sensor connections
(R G Y B)
Normally Closed
Telemetry
connections
Normally Open
Common
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