PAL-AT Operating Manual
55
Jumper Setting vs. Relay Number Assignment
33-60 / 1-32
Relay Bank
Select
Relay Number Assignment
1-32 2 Relay 5 Relay 6 Relay 7 Relay 8
1-32 3 Relay 9 Relay 10 Relay 11 Relay 12
1-32 4 Relay 13 Relay 14 Relay 15 Relay 16
1-32 5 Relay 17 Relay 18 Relay 19 Relay 20
1-32 6 Relay 21 Relay 22 Relay 23 Relay 24
1-32 7 Relay 25 Relay 26 Relay 27 Relay 28
1-32 8 Relay 29 Relay 30 Relay 31 Relay 32
33-60 1 Relay 33 Relay 34 Relay 35 Relay 36
33-60 2 Relay 37 Relay 38 Relay 39 Relay 40
33-60 3 Relay 41 Relay 42 Relay 43 Relay 44
33-60 4 Relay 45 Relay 46 Relay 47 Relay 48
33-60 5 Relay 49 Relay 50 Relay 51 Relay 52
33-60 6 Relay 53 Relay 54 Relay 55 Relay 56
33-60 7 Relay 57 Relay 58 Relay 59 Relay 60
Table A-1
A.3 Internal Diagnostic Indicators
The AT-ORC Output Relay Controller has a yellow LED (D4), which indicates, when lit, that the common
alarm relay is energized and communication has been established with the PAL-AT Leak
Detection/Location Panel. If communication is lost, the relay will de-energize. Each control relay on an
AT-RM also has a yellow LED that indicates the relay is energized.
A.4 Control Relays
When PAL-AT detects a leak or probe activation in a section of sensing cable that has a control relay
assigned, it will communicate to the AT-ORC Output Relay Controller, which switches the SPDT output
relay rated for 250VAC, 10A. The AT-ORC Output Relay System is shipped with the relays configured
to operate in a normally energized mode, so they de-energize in the alarm state. The assigned
control relay remains switched until the leak or probe activation is acknowledged by clearing the alarm
queue.
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