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THE AUTO CONFIG MENU
Auto Configuration is an automatic calibration function whereby the InSight II scanner scans the
flame flicker frequency spectrum with flame ON, and with flame OFF (background radiation pres-
ent). The scanner will then select the appropriate sensor, sensor gain, and bandpass frequency for
optimum flame ON: OFF discrimination.
Note: The Auto Config function allows the user to perform the Learn Flame ON and Learn Flame
OFF procedures for flame relays FR1 and FR2 either together or separately.
Auto Config is performed in 3 steps:
1.
Run the target flame at the low firing rate. Enter the Automatic Config menu loop, and “AIM SCAN-
NER” is displayed. Physically aim the scanner for peak signal strength as described in the “Aim
Scanner” section below. Press the DOWN key when complete.
2.
Press the DOWN key until the appropriate “START LEARN... ON” message is displayed then press
SELECT. Press PROGRAM and the scanner will memorize the flame ON condition as described in
the “Learn ON” section below. Press the DOWN key when complete.
3.
Turn the target flame off. Press the DOWN key until the appropriate “START LEARN... OFF” mes-
sage is displayed then press SELECT. Press PROGRAM and the scanner will memorize the flame
OFF condition as described in the “Learn OFF” section below. Press the DOWN key when complete.
Note: For proper operation, both a Learn Flame ON and a Learn Flame OFF procedure must be
performed
AIM SCANNER
Scroll to “SELECT to Enter AUTOMATIC CONFIG” and press the SELECT key.
When SELECT is depressed, “AIM SCANNER IR=xx UV=xx” is displayed. The value of “x” may range
from 0 to 60. The value displayed represents the flame flicker intensity of the flame for
the entire flicker
frequency spectrum
as individually sensed by the UV (U) sensor and/or IR (I) sensor(s).
The numbers should be at their peak (highest numerically) when the scanner is aimed at the primary com-
bustion zone (first 1/3) of the flame. If the scanner is utilizing both the IR and UV sensors, priority should
be given to maximizing the UV intensity.
Run the flame at low fire rate and observe the signal intensity.
Physically aim the scanner at the first 1/3 of the flame to maximize the intensity reading. (Allow the scan-
ner reading to stabilize at least two seconds after each movement).
If the reading is 10 or less, the intensity is marginal and it may be necessary to increase the IR and/or
UV Gain Range. Depress the DOWN key to view the current IR Gain Range and UV Gain Range
settings. Increase the setting from LOW to MED or HIGH as required.
Note: The scanner has selectable internal Gain "Ranges" for each IR and UV sensor. Scanners with Engi-
neering Code 00 through 04 have two ranges for each sensor, "LOW" and "HIGH". Scanners with Engi-
neering Code 05 and higher have three ranges for each sensor, "LOW", "MED" and "HIGH". Scanners
with Engineering code 09 and higher have five ranges for IR, “LOW”, “LOW+1”, “LOW+2”, “MED”,
and “HIGH”.
Note: In rare applications where the flame is extremely bright, it is possible to saturate the sensor.
The symptom could be a very low signal, an erratic signal, or no signal at all. In this situation, the
installation of a sight-pipe orifice kit (P/N 53-121) is recommended.
A-IR GAIN RANGE
(
The “A” indicates the active file selected
)
If, when “Aiming” the scanner, a flashing “IR TOO HIGH” message is observed, then the signal is
over-range and the “Range” should be reduced to either “MED”, “LOW+2”, “LOW+1”, or “LOW”.
If, when “Aiming” the scanner, an IR number of less than 10 is observed, then the gain Range should
be increased to either “MED” or “HIGH”.
Refer to notes above.
A-UV GAIN RANGE
(
The “A” indicates the active file selected
)
If, when “Aiming” the scanner, a flashing “UV TOO HIGH” message is observed, then the signal is
over-range and the “Range” should be reduced to either “MED or “LOW”. If, when “Aiming” the
scanner, a UV number of less than 10 is observed, then the gain Range should be increased to either
“MED” or “HIGH”.
Refer to notes above.
