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LINKS TROUBLE SUPERVISION
The LINKS1000 automatically monitors its operation and indicates trouble conditions by flashing LED1 on the
circuit board. LED1 normally flashes once every 10 seconds when the LINKS is in standby (ready to transmit)
mode. Troubles are indicated when LED1 flashes more than once at each 10 second interval. Shown below
are the number of flashes used to indicate each trouble condition. If more than one trouble is present, only the
first trouble is indicated. When that trouble is cleared, the next will be indicated.
Table 2 — LED1 Indications
Number of LED Flashes
Trouble
Time-outs for LINKS failures
2 flashes
AC Trouble
30 minutes
3 flashes
Battery Trouble
2 minutes, 40 seconds
4 flashes
Loss of Cellular Communication
30 seconds
6 flashes
Tamper Trouble
30 seconds
7 flashes
Internal Trouble
30 seconds
8 flashes
PGMIn Trouble
30 seconds
AC Failure:
Loss of AC power to the LINKS1000 for more than 30 minutes is indicated by an AC failure.
Battery Fault:
A battery fault indicates that the LINKS1000 standby battery voltage is below 11.5 volts or there
is a problem with the battery connection.
Loss of Cellular Communication:
Indicates that the LINKS1000 is not able to communicate with the cellular
network. Ensure the antenna connections and cabling are secure and undamaged, and that the antenna has
not been obstructed by metal objects. Check the signal strength LED’s as described in the “Relocating the
Antenna” section of this manual.
Tamper Fault:
Indicates that the tamper contact is open. If a tamper switch is not installed, ensure that a jumper
is securely connected between the “TMP” and “GND” terminals.
Internal Fault:
Indicates that an internal fault has occurred. Return the unit to your distributor for repairs.
PGMIn Fault:
Indicates that there is a problem with the connection between the LINKS PGMIn terminal and the
security system’s PGM terminal. Check the following:
• Ensure that the PGMIn terminal is connected to the security system’s PGM terminal
• Ensure that the security system’s PGM Output has been programmed for LINKS operation
• Ensure that no other connections have been made to the security system’s PGM terminal
• Ensure that the LINKS GND terminal is connected to the security system’s ground terminal
• Ensure that a resistor has been added (for the PC4010, PC4020, PC4010CF, PC4020CF, PC5010). Refer to
the hookup diagram for information on the resistor required.
When using End-of-Line Resistor Loops,
connect the LINKS Trouble terminal(s) to unused zone(s) on the
control panel, and program the zone as a 24-hour Silent Zone (when using the PC4010, PC4020, PC4010CF,
PC4020CF or PC5010, program the zone as “LINKS Supervisory”). The Alarm and Restoral Reporting Codes
for that zone will be used to report a general trouble (which could be any of the trouble conditions described
above) on the LINKS1000.
Note that the PC4010, PC4020 and PC4020CF use the Zone Trouble and Zone Trouble Restoral
Reporting Codes to report a general LINKS trouble condition.
