Forney Corporation
UNIFLAME User’s Manual
Publication 372000-48 Rev H
5.2.2 SETPOINT
LOOP
The SETPOINT menu loop consists of the AUTOTUNE and EDIT modes. The AUTOTUNE mode
allows the detector’s processor to automatically tune the setpoints based on the appropriate target flame
and background flame data, while the EDIT mode allows the user to manually configure the tuning
setpoints.
5.2.2.1 AUTOTUNE MODE
From the AUTOTUNE mode, the user views the flame signal intensity and physically aims the detector
for optimum signal. The user then commands the UNIFLAME Series flame detectors to analyze the target
flame’s ON and OFF (background radiation) conditions. The detector will then automatically select the
optimum setpoints. The automatic selections of optimum setpoints include the appropriate sensor gain,
bandpass frequency, sensor range and flame relay ON and OFF thresholds.
The AUTOTUNE mode is entered from the STATUS LOOP by first entering a four digit password. A
summary of the text displayed in the EDIT mode is provided below and shown in Figure 16.
TEXT
DISPLAYED
TEXT DISPLAYED
(SELECT KEY)
POSSIBLE VALUES
(UP/DOWN KEYS)
Aim Detector
I0 U0
0 to 60
(10 – 26 is best)
Learn On
Run Flame at Lowest setting
and press PROGRAM
WAIT 128-0
(Counts down to 0 within 20 seconds, then displays
“Learn ON complete”)
Learn Off
Turn Flame OFF and press
PROGRAM
WAIT 128-0
(Counts down to 0 within 20 seconds, then displays
“Learn OFF complete”)
--Exit--
Autotune (Returns to
STATUS LOOP)
Figure 16 – AUTOTUNE Mode
18