User guide

AN24 & AN28 Annunciators Instruction Manual
22
Normally Open/Normally Closed Input Setup
Each input channel is independently programmed for a normally open or
normally closed input. All channels are initially programmed at the
factory for normally open inputs.
Alarm Conditions for normally open inputs:
1. A closed contact between an input channel and common
will cause an alarm condition.
2. An “on” or active transistor between an input channel and
common will cause an alarm condition.
3. An active logic level low on an input channel will cause an
alarm condition.
Alarm Conditions for normally closed inputs:
1. An open contact between an input channel and common
will cause an alarm condition.
2. An “off” or cutoff state transistor between an input channel
and common will cause an alarm condition.
3. An active logic level high or no supplied active logic level
on an input channel will cause an alarm condition.
Programming NO/NC Inputs
1. Press and hold ACK and RESET for 3 seconds until all LEDs
cycle, then release
2. Press ACK within 3 seconds of release while LEDS cycle.
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3. Press ACK within 3 seconds of release while LEDs blink.
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4. Press the RESET pushbutton to turn LED 1 off for a NO input,
or on for a NC input on input channel 1.
5. Press ACK to accept the input type and program channel 2.
6. Repeat steps 4 and 5 for all input channels.
7. Press and hold ACK for five seconds to return to normal
operation with the programmed input types.
During programming, the LED for the channel being programmed will
display as either off or brightly on. All other LEDs will be dim.
The green power LED will blink slowly to indicate the unit is in NO/NC
setup mode. The unit will automatically leave setup mode if no
pushbutton is pressed for 3 minutes.
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The unit will automatically leave setup mode if steps 2 and 3 are not followed.