27
®
Step 1 - Enter the Passcode
Press both the
Target Flame Select
and
Background Flame Select
buttons simultaneously.
Use the
UP
or
DOWN
buttons to select LED number
[4]
(passcode).
Press both the
Target Flame Select
and
Background Flame Select
buttons simultaneously.
Step 2 - Parameter Selection
The user selects which of the four parameters to program using the
UP
and
DOWN
buttons. A single
LED will be lit (LED 1 to 4, bottom to top) to identify which parameter is selected, as follows. Once the
appropriate LED is selected, press the
Target Flame Select
button to enter the program mode for the cor-
responding parameter
.
Step 3 - Programming Parameter Trip Threshold
After pressing the
Target Flame Select
button in Step 2, the current parameter setting will be displayed.
The user may increase or decrease the setting by pressing the
UP
or
DOWN
buttons (Reference Table 8
for parameter increments and corresponding LED displays).
Once the desired setting is entered, press the
Background Flame Select
button to save the setting in
tem-
porary memory
and
exit
back to the parameter select menu.
If programming additional parameters is desired, continue to the next parameter using the
UP
or
DOWN
buttons and program the parameter as previously discussed.
Step 4 - Saving or Discarding Parameter Settings
To
SAVE
the modified parameters to permanent memory and
EXIT
this mode, press and hold the
Back-
ground Flame Select
button for at least 2 seconds.
NOTE:
Changes to the parameters will NOT be stored unless valid flame data is already present in the
scanner's permanent memory. Either a flame must have been previously learned or the Default Profile
must have been loaded.
To
DISCARD
any changes to these parameters, press the
Background Flame Select
and
Target Flame
Select
buttons simultaneously. This will discard all parameter changes while remaining in the program
mode.
To
DISCARD
any changes and
EXIT
the mode, press and hold the
Background Flame Select
and
Tar-
get Flame Select
buttons down for at least 2 seconds.
LED
Parameter
8
Not used
7
Not used
6
Not used
5
Not used
4
Peak-to-Median Ratio
3
Best Fit
2
Power Spectrum Density
1
Average Amplitude
CAUTION: To ensure safe and reliable detection it is the responsibility of the commissioning
Ensure that the scanner correctly detects the target flame (Flame On condition) and
engineer to carry out flame failure testing after programming the scanner.
recognizes the target flame off (Flame Off condition).
