User guide

AN24 & AN28 Annunciators Instruction Manual
24
Relay Operation
Relays 1 and 2 have standard functionality as defined below.
Relay 1 Operation
Relay 1 enters alarm state when there is a new alarm. This
relay will clear when the alarm is acknowledged, generally by
pressing the ACK pushbutton.
Relay 2 Operation
Relay 2 enters alarm state when any channel displays in alarm
state. This relay will clear when all indication LEDs are cleared.
Relay Fail-Safe
In fail-safe operation, a relay coil is energized in non-alarm
condition. In case of power failure, relays will go to alarm state.
Fail-safe operation is set independently for each relay.
Programming Relay Fail-Safe
1. Press and hold ACK and RESET for 3 seconds. When all
LEDs cycle, release.
2. Press RESET within 3 seconds of release while LEDs cycle.
1
3. Press RESET within 3 seconds of release while LEDs blink.
1
4. Press the RESET pushbutton to turn LED 1 off for normal
operation, or on for fail-safe operation of Relay 1.
5. Press ACK to accept the type of operation for Relay 1.
6. Press the RESET pushbutton to turn LED 2 off for normal
operation, or on for fail-safe operation of Relay 2.
7. Press ACK to accept the type of operation for Relay 2.
8. Press and hold ACK for five seconds to return to operation.
During programming, LEDs 1 through 4 will light. The LED being
programmed will display as either off or brightly on. The other 3 LEDs
will be dim. On an AN28, LEDs 5 through 8 will be off.
The green power LED will blink quickly to indicate the unit is in the
advanced programming mode. The unit will automatically leave setup
mode if no pushbutton is pressed for 3 minutes.
Note: LED 3 and 4 are used for the silence pushbutton enable/disable
option (see page 27) and no lock-in option (see page 27)
1
The unit will automatically leave setup mode if steps 2 and 3 are not followed.