Receiver operation – Inovonics FA416 User Manual

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02304e 23-Oct-02

Receiver Operation:

Output activation: Outputs will open or close upon activation of the point. This function is determined

collectively for all outputs by placement of the Output Select Jumper. (If the jumper position is changed

after transmitters have been programmed, it will be necessary to press the receiver Reset Button.) Activation

of an output is indicated by the corresponding Output LED on the FA416 board. The fifth LED is the Global

Fault LED.

Fault output operation: By default, the Global Fault Output will activate upon recognition of a trouble

condition. Tamper and Low Battery signals will cause the Global Fault Output to latch. Inactive conditions

will follow the current state of the transmitter.

A point is declared inactive as follows: The receiver looks for at least one supervisory transmission (or

"check-in") from each supervised transmitter during the period of time programmed as the supervisory

window. The first time the receiver gets a supervisory signal from a transmitter within a new window, it

considers the transmitter active for the remainder of the window. If it fails to receive a signal in the following

supervisory window, it declares the point inactive at the end of the window. The actual time between a

transmitter becoming inactive and being reported inactive will range from slightly more than the supervisory

window value to slightly less than twice the window period. For example, the default supervisory window is 4

hours. If a transmitter becomes inactive, the inactive fault output will be triggered in 4 to 8 hours.

IMPORTANT NOTE: For most applications, Inovonics recommends a 4-hour supervisory window. In
conjunction with a 60-second transmitter check-in interval, this provides highly reliable supervision. If
significantly shorter supervisory windows or for significantly longer check-in periods are desired,
please consult Inovonics technical service.

Note: If another output is assigned a global fault function, such as global tamper, that function will no longer

be reported at the Global Fault output.

Displaying fault and active conditions without the display: Fault conditions will cause the Global Fault

LED to light. It can be reset via the Reset input or the Reset button. Without the display or the FA116

programmer, trouble-shooting global faults is primarily a matter of deduction and of systematically checking

transmitters for low batteries and tamper conditions. Inactive transmitters which have previously worked well

can usually be attributed to low batteries.

Displaying fault and active conditions with the display: Faults can be identified by point and type. Press

the Review button on the FA516 while observing the status LEDs. Trouble conditions will be indicated by

LEDs on the FA516 and the point will be shown on the Channel Display. The display will show multiple

faults, by stepping through each trouble type in sequence, showing points affected. If a point is activated

and/or in trouble the Output LEDs will indicate which output is assigned to the activated and/or troubled

point.