Basler Electric DGC-2020ES - Manual (Page 228)

220 9469200990 Rev C
DPF Status and Pre-Alarms
The DGC-2020ES receives DPF status information which is broadcast from the engine ECU in various
Parameter Group Numbers (PGN) and Suspect Parameter Numbers (SPN). The DGC-2020ES displays
this information on the front panel, and in BESTCOMSPlus, via DPF related pre-alarms. The J1939
parameters and the resulting DGC-2020ES pre-alarms are summarized in the following paragraphs.
•
PGN 64892 (0xFD7C) Diesel Particulate Filter Control 1
o SPN 3697, Diesel Particulate Filter Lamp Command
DPF REGEN REQUIRED Pre-Alarm: When SPN 3697 has a
value of 1 or 4 indicating the DPF lamp is on, the DGC-2020ES
will annunciate a pre-alarm with text of DPF REGEN REQUIRED.
The DPF symbol, shown to the right, will accompany the text
when the pre-alarm appears on the DGC-2020ES front panel.
o SPN 3698, Exhaust System High Temperature Lamp Command
HIGH EXHAUST TEMP Pre-Alarm: When SPN 3698 has a value
of 1 indicating the high exhaust temperature lamp is on, the DGC-
2020ES will annunciate a pre-alarm with text of HIGH EXHAUST
TEMP. The high exhaust temperature symbol, shown to the right,
will accompany the text when the pre-alarm appears on the DGC-
2020ES front panel.
o SPN 3703 Diesel Particulate Filter Active Regeneration Inhibited Due to Inhibit Switch
DPF REGEN INHIBITED Pre-Alarm: When SPN 3703 has a value
of 1 indicating the DPF Regeneration is inhibited due to the inhibit
switch being set, the DGC-2020ES will annunciate a pre-alarm
with text of DPF REGEN INHBTD. The DPF regeneration inhibited
symbol, shown to the right, will accompany the text when the pre-
alarm appears on the DGC-2020ES front panel.
•
DPF Soot Level Annunciation via Diagnostic Trouble Code (DTC) SPN 3719 Diesel Particulate Filter
Soot Load Percent
In addition to the standard diagnostic trouble code annunciation, the DGC-2020ES will
annunciate a pre-alarm under circumstances described below.
o FMI = 15: Data Valid But Above Normal Operating Range Least Severe Level
DPF SOOT LEVEL HIGH Pre-Alarm: When the FMI is equal to 15,
the DGC-2020ES will annunciate a pre-alarm with text of DPF
SOOT LVL HI. The DPF symbol, shown to the right, will
accompany the text when the pre-alarm appears on the DGC-
2020ES front panel.
o FMI = 16: Data Valid But Above Normal Operating Range Moderately Severe Level
DPF SOOT LEVEL MODERATELY HIGH Pre-Alarm: When the
FMI is equal to 16, the DGC-2020ES will annunciate a pre-alarm
with text of DPF SOOT LVL MOD HI. The DPF warning symbol,
shown to the right, will accompany the text when the pre-alarm
appears on the DGC-2020ES front panel.
o FMI = 0: Data Valid But Above Normal Operating Range Most Severe Level
DPF SOOT LEVEL EXTREMELY HIGH Pre-Alarm: When the FMI
is equal to 0, the DGC-2020ES will annunciate a pre-alarm with
text of DPF SOOT LVL EXT HI. The DPF stop symbol, shown to
the right, will accompany the text when the pre-alarm appears on
the DGC-2020ES front panel. If the DPF soot level reaches the
most severe level, the engine ECU may shut the engine down and
prevent it from running or it may allow it to run, but at a reduced
Exhaust Treatment DGC-2020ES