TTDM–NMM and - California Detection Systems

R S-to-S
R RG Loop,
R YB Loop
R Loc
NewLeakRes
BarrierRes
SI Version
SI PID
SI Comm
Mode
SI Status
This is the resistance from sensing wire to sensing wire (see
Appendix 3 for detail). For a clean, leak-free sensing circuit,
this resistance is in the M½ range. If liquid is detected, it
drops to the k½ range or even lower. If the value is changing,
it may indicate an event in progress.
These are the resistances of the Red-Green and Yellow-Black
loops in the TraceTek sensing circuit (see Appendix 3 for
detail). If these values are significantly different from each
other, it may indicate damage to a sensing cable or connector.
This is the resistance measured along the black sensing wire
to the location of the leak (see Appendix 3 for detail).
This variable is used by the microprocessor to distinguish
between a Re-alarm event and a new leak.
This user setting is for the resistance of the zener safety
barrier (if installed); the leak location algorithm subtracts this
barrier resistance to “zero out” the barrier effect on the system
map.
This indicates the software version operating in the sensor
interface microprocessor.
This product code for the SI board is used by the NMM
processor to recognize the type of SI card.
This indicates the success rate (in percent) for communications
between the NMM and the SIM channel selected. A
value below 90% may indicate a faulty connection or damaged
RS-485 cable.
This index for the SI software location algorithm may assist
factory personnel providing diagnostic support.
This value indicates SIM solid state switch status and may
assist factory personnel providing diagnostic support.
Modifying Settings for Individual SIM Channels
To change the alphanumeric tag for the selected SIM channel:
• Select the appropriate SIM channel as described previously in this section.
• Use the up and down arrows to select ID.
• Press Enter.
• Use the left and right arrows to select a character space to modify.
• Use the Reset key to “tab” between Letters, Numbers, and blank.
• Use the up and down arrows to cycle through all available characters until the
desired character is displayed. There are numerous punctuation, currency,
Katakana, and non-English alphabetical characters available. Going “up” or “down”
cycles through all available characters.
• Press Enter once label has been set up.
To change the barrier resistance for the selected SIM channel:
• Select the appropriate SIM channel as described previously in this section.
• Use the up and down arrows to select BarrierRes.
• Press Enter.
• Enter password when requested.
• Use the left, right, up, and down arrows to input a value for the DC resistance of
the system zener barrier (if installed).
• Press Enter when done.
Important: Always set the barrier resistance before mapping the sensing circuit
connected to a SIM. Changing the barrier resistance changes all mapping references,
which will invalidate a map created prior to the change.
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