Raytech TraceTek TTDM-128, User Manual

Page: 26 / 47

H56874 4/03 www.tycothermal.com +1 (650) 474-7400 26
SETTING UP REGIONS AND RELAYS
For some systems, it may be helpful to divide a circuit of sensing cable into regions. In
addition, regions are sometimes useful in setting up TT-NRM relay actions.
When a length of sensing cable is divided into regions, the TTDM will identify the region
in which a Service or Leak event occurs. Each region represents a section of the entire
length of sensing cable. Regions are defined by a low limit (starting distance) and a high
limit (ending distance). Regions can contain the entire circuit, or only a part of the circuit,
and they may overlap each other.
To create regions for a circuit (repeat for each desired region):
►
Select the appropriate SIM channel.
►
Use the D
OWN
arrow key to select Add Regions/Relays, then press E
NTER
.
►
Select Region No. from the menu and press E
NTER
.
►
Use the arrow keys to select a region (1-10) and press E
NTER
.
►
Select Start from the menu and press E
NTER
. This value represents the starting distance for
the region. Using the arrows, enter a low limit and press E
NTER
.
►
Select End from the menu and press E
NTER
. This value represents the ending distance for the
region. Using the arrows, enter a high limit and press E
NTER
.
►
Select ID from the menu and press E
NTER
. Using the arrows, assign the region an
alphanumeric tag and press E
NTER
.
If a TT-NRM is connected and will be utilized with this circuit, continue as follows:
►
Select Region Relay and press Enter.
►
Using the arrows, assign the relay to be activated for a Leak Alarm. Press E
NTER
.
►
Repeat this process for the Trouble Relay and Service Relay. Note that all relays can be
assigned to the same TT-NRM relay, or they may be assigned to any combination of different
relays.
If the SIM is a TTSIM-1A or TTSIM-2, continue as follows:
►
Select SIM Relay and press E
NTER
.
►
Select Alarm Mode and press E
NTER
. Select Leak if you want the relay to activate only on leak
alarm, or select Leak/Brk if you want the relay to activate for any sensor alarm condition, then
press
E
NTER
.
►
Select Alarm State and press E
NTER
. Select OFF if you want the relay to be normally
energized and de-energized for alarms, or select ON if you want the relay to be normally de-
energized and energized for alarms. Press
E
NTER
.
►
Select Relay Reset and press E
NTER
. Select the appropriate reset mode, then press Enter:
▪
Auto: the relay will reset when the TTDM Reset key is pressed (regardless of the current
alarm condition), or it will automatically reset when the alarm condition clears.
▪
Manual: the relay will reset only when the TTDM Reset key is pressed. The relay will reset
regardless of the current alarm condition.
▪
Safe: the relay will reset only when the alarm condition has been cleared and the TTDM
Reset key is pressed.