2 Operating PAL-AT
12
PROBABLE SHORT FOUND IN CABLE ? AT ????
* OR # TO REENTER
FOUND IN CABLE ? IN ???? FEET
* OR # TO REENTER
MUST BE BEYOND SECTION ?? END AT ????
Enter # to accept or * to reenter the distance determined by PAL-AT. The most likely reason this message
is displayed is incorrect information (cable type or length) was entered.
LCD2.1-10:
There are two reasons for displaying message LCD2.1-10. Either the next section was not connected to
the cable as intended or the connector on the new section was not installed correctly. Enter * and reenter
the data after the problem is corrected.
2.1.6.4 No End Found
If PAL-AT cannot find the end of the cable, one of the following messages is displayed:
LCD2.1-11:
This message shows a short in the cable. Check the cable connectors at the displayed distance. A short
in the cable must be repaired before PAL-AT can monitor the sensor string. Refer to section 5.5 for cable
connector tests.
OR
LCD2.1-12:
This message is displayed if: (1) the actual end of the section is more than 100 ft [30 m] longer than the
estimated distance entered, (2) the end is longer than the maximum length of the system, or (3) the sensor
string is disconnected from the panel. Recheck all connectors as described in section 5.5.
2.1.6.5 AT-ORC Functions
If an Output Relay Controller panel (AT-ORC) is connected to PAL-AT, refer to Appendix A for additional
information regarding relay assignment in Setup.
2.1.6.6 End of Sensor String
PAL-AT repeats messages LCD2.1-05 through LCD2.1-12 for each new cable segment or probe. The
setup table has the capacity for over 50 sensor string sections.
The last section of each sensor string must be jumper cable, except when monitoring ATP cable (see
section 10 of the PAL-AT Installation Manual for specific ATP information). A minimum length of 30 ft [9
m] for JMP-U (40 ft [12 m] for JPP) is required. However, a longer section may be required if the previous
section is a probe or the sensing string is over 2,500 ft [750 m] long. Refer to section 4 in the PAL-AT
Installation Manual.
If the length of the last section of jumper cable is determined by PAL-AT to be shorter than the required
lengths listed above, add additional jumper cable to the last section. This happens occasionally when
there is mismatch between the impedance of the last sensor cable section and the end jumper cable
section. The end jumper cable lengths are used for system calibration and are not monitored for leaks.
After the last cable section data is entered, end the setup table by entering cable type 0 then # at message
LCD2.1-05. The end of the last cable section must have a connector attached. Install the red threaded
plastic dust cap, supplied with PAL-AT, over the connector.
2.1.6.7 Set Sensitivity
After all the cable sections are setup, the system calculates the recommended sensitivity based on the
types of cable selected. The settings are LOW, MED, HI and ADJ. The next message displays the
recommended default setting:
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