wc_tx003871gb_FM10.fm
159
Machines with Aftertreatment Exhaust System
15.4 Monitoring and Control of the DEF Level
The Diesel Exhaust Fluid (DEF) level is monitored by the genset controller. In
normal operation, the DEF level (in percentage of the DEF tank capacity) is
displayed on the left side of the LCD screen. When the DEF tank begins to empty,
the genset controller displays messages alerting the operator of the condition of
the DEF supply. See table below.
Refilling the DEF tank before the DEF level reaches 2.5% avoids DEF-level-
related engine shutdowns.
DEF INDUCEMENT
wc_gr012296
DEF Level Controller Message Controller / Machine Response
≥ 10% No message Normal screen / normal operation
2.5–10% DEF WARNING
■ Normal operation.
■ LED flashes.
0–2.5% DEF INDUCEMENT
■ Main circuit breaker trips.
■ Machine runs for 10 minutes, then shuts down.
■ During shutdown the LED is on solid and the LCD screen
shows LOW DEF SHUTDOWN.
The machine may be restarted without adding any DEF, but
will only run for 10 minutes before the genset controller
shuts down the machine. Only the convenience receptacles
are available.
0% DEF PRESVR INDUCMT Same as above plus the engine’s SEVERE INDUCMT timer
starts.
30 minutes
after 0%
DEF SEVERE INDUCMT
■ After 30 minutes of run time with 0% DEF, the engine
shuts itself down. This is the first of four shutdowns
allowed by the engine.
Note: The genset controller’s 10-minute run time limitation
is still active within the 30-minute engine run time limit.
Thus, up to three restarts by the genset controller are
possible within the 30-minute engine-controlled run time.
■ The engine will allow four such shutdowns to occur. On the
fourth shutdown, the engine controller will lock out the
engine. The engine can only be unlocked by a Cummins
service technician.
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