23
®
Step 3 – Trip event diagnosis
Once the appropriate trip event location in the Trip Register has been selected, the LEDs will display the
reason for the trip. Use Table 5 to determine the trip code from the LED display. Multiple criteria can
cause a trip at the same instance, so multiple reasons may be set for a single trip. For example LED 1 will
be lit on a "Power Spectrum Density" trip and LED 3 will be lit for an "Average Amplitude" trip. If both
LED 1 and LED 3 are lit, the scanner tripped on both "Power Spectrum Density" and "Average Ampli-
tude"..
Table 6:
Trip Codes.
If additional trip events are to be viewed, use the
UP
or
DOWN
buttons to cycle to the appropriate
LED corresponding to the desired trip and then use Table 5 to determine the reason for the trip.
Step 4 – Viewing Parameter Values at Time of Trip
To view the scanner parameter values at the time of the trip, follow Step 2 to select the specific trip event.
Next, press the
Target Flame Select
button to scroll up through the LEDs until the corresponding
parameter LED is selected. Table 6 gives the relationship between the lit LED and the scanner
parameters.
When the
Target Flame Select
button is released the display will change and show a series of LEDs that
corresponds to the value of the parameter selected.
To select a different scanner parameter, press the
Target Flame Select
button and continue scrolling up
to the parameter's LED. To return to the first scanner parameter, press the
Background Flame Select
button which will redisplay the currently selected trip event and error code, then press the Target Flame
Select button as needed.
NOTE: Holding down the Background Flame Select button for more than two
seconds will reset the Trip Registers and exit the diagnosis mode
LED
SCANNER TRIP CODES
LED
SCANNER TRIP CODES
POWER SPECTRUM
DENSITY
The power spectrum
density has fallen below
the applicable threshold
value.
BEST FIT
The frequency curve of the flame no
longer matches that of the learned
flame.
AVERAGE AMPLITUDE
The average amplitude
has fallen below the
applicable threshold
value.
SINGLE SOURCE
A single flicker frequency source has
been detected. This is identified as
not a genuine flame.
INTERNAL FAULT
An internal diagnostic
detected a fault.
SIMULTANEOUS ERROR EXAMPLE
A best fit error and a power spectrum
density error were detected at the
same time.
=
LED ON
=
LED OFF
