User Manual

SERIES 50 OPERATOR'S GUIDE
Data Recording Capability
DDEC Reports is a data recording
capability that is standard on all DDEC
IV en gin es. DD EC Reports contains
information on driver activities,
engine performance and critical
incidence reportin g. The information
can be extracted with Detroit Diesel
Diagnostic Link® 2.1 (DDDL 2.1)
or later software. To perform the
extraction, at least a 486 computer
with a 16-MB RAM is required.
DDEC IV Operation
NOTE:
This engine is equipped with DDEC
software. This software generally
assures optimal engin e performance.
The installation of software upgrades
may cause minor changes in features
and engine pe r formance.
Since the DDEC system is electronic,
a battery is required to operate the
computer. T he system operates at 12
or 24 volts. However, in the event of a
power supply malfunction, the system
will continue to operate at reduced
voltage. When this occurs, the CEL
will come on.
The engine will only operate at
reduced rpm until the battery voltage
reaches a point where the ECM will
no longer function and the engine
shuts down.
Should th e CEL come on for any
reason, the vehicle can still be
operated and the driver can proceed
to the required destination. This
conditionshouldbereportedtoan
authorized Detroit Diesel distributor
or dealer.
NOTICE:
When the SEL comes on, the
computer has detected a major
malfunction in the engine that
requires immediate attention. It is
the operator's responsibility to
shut down the engine to avoid
serious damage.
The engine can be configured to
give a warning only, to ramp down
(reduce power) or to shut d own .
Ramp down will red uce engine rpm
to a pre-determined speed, but will
not shut down the engin e . With
the 30-second shutdown option, the
engine will begin a 30-second, stepped
power-down sequence until it shuts
down completely.
Stop Engine Override can be supplied
in case the vehicle is to operate in a
critical location.
NOTE:
TheStopEngineOverride(SEO)
switch and the Diagnostic Request
switch are the same.
All information subject to change without notice. (Rev. 01/04) 27
DDC-SVC-MAN-0058 Copyright © 2004 DE TROIT DIESEL CORPORATION