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The radio fault output relay may be programmed for either FAIL-SAFE mode (relay always
energized) or LOW CURRENT mode (relay normally de-energized) by selecting Yes or No to
programming question 27: FLT REL ON (Y/N). In addition, the relay can be set for either N.O. or N.C.
operation (in either fail-safe or low current modes) using the J1 jumper. When fail-safe mode is
selected, the relay will change states (and trigger a dialer, if connected) in the event of power loss.
Note that fail-safe mode increases the standby current by about 10mA, which results in lower battery
backup time (about 15%) in the event of power loss. Set the J1 jumper to position A or position B, as
follows:
Prog. Ques. 26
Fault Relay ON
(energized)
NO
YES
J1 Jumper Setting (relay N.O. or N.C.)
Pos. B
N.C.
N.O.
– 8 –
Pos. A
N.O.
N.C.
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