Basler Electric DGC-2020 - Manual (Page 616)

DPF Status and Pre-Alarms
The DGC-2020 receives DPF status information which is broadcast from the engine ECU in various
Parameter Group Numbers (PGN) and Suspect Parameter Numbers (SPN). This information is displayed
on the front panel and in BESTCOMSPlus, via DPF related pre-alarms. The J1939 parameters and the
resulting DGC-2020 pre-alarms are summarized in the following paragraphs.
•
PGN 64892 (0xFD7C) Diesel Particulate Filter Control 1
o SPN 3697, Diesel Particulate Filter Lamp Command
REGEN REQUIRED Pre-Alarm: When SPN 3697 has a value of 1
or 4 indicating the DPF lamp is on, the DGC-2020 will annunciate
a pre-alarm with text of REGEN REQUIRED. The DPF symbol,
shown to the right, will accompany the text when the pre-alarm
appears on the DGC-2020 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-
2020 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-
2020 front panel.
o SPN 3703 Diesel Particulate Filter Status
SPN 3703 indicates that regeneration is required at the lowest level, moderate level, or most
severe level. The DGC-2020 uses this parameter for DPF Soot Level Pre-alarms which are
described in the following paragraphs.
•
DPF Soot Level Annunciation
The DGC-2020 annunciates DPF Soot Level pre-alarms which are described in the following
paragraphs.
o SOOT LEVEL HIGH Pre-Alarm
This pre-alarm is annunciated when one of the following occurs.
 A DTC is received with SPN 3719 (Diesel Particulate Filter Soot Load Percent) with
FMI = 15 (Data Valid But Above Normal Operating Range Least Severe Level)
 SPN 3703 (Diesel Particulate Filter Status) is received with a value of 001
(regeneration is needed – lowest level)
The pre-alarm text is SOOT LVL HI.
The DPF symbol, shown to the right, accompanies the text when the pre-alarm
appears on the DGC-2020 front panel.
o SOOT LEVEL MODERATELY HIGH Pre-Alarm
This pre-alarm is annunciated when one of the following occurs.
 A DTC is received with SPN 3719 (Diesel Particulate Filter Soot Load Percent) with
FMI = 16 (Data Valid But Above Normal Operating Range Moderately Severe Level)
 SPN 3703 (Diesel Particulate Filter Status) is received with a value of 010
(regeneration is needed – moderate level)
The pre-alarm text is SOOT LVL MOD HI.
The DPF warning symbol, shown to the right, accompanies the text
when the pre-alarm appears on the DGC-2020 front panel.
o SOOT LEVEL EXTREMELY HIGH Pre-Alarm
This pre-alarm is annunciated when one of the following occurs.
 A DTC is received with SPN 3719 (Diesel Particulate Filter Soot Load Percent) with
FMI = 0 (Data Valid But Above Normal Operating Range Most Severe Level)
E-2 DGC-2020 Exhaust Treatment 9400200990 Rev X