Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 184
It should be noted however that Tier4 Final legislation mandates the use of
some specific system controls and failure reactions in the form of derates etc
which cannot be disabled or adjusted. The following sections provide details
of these exceptions and how they operate.
14.1 General Information
The engine monitoring system includes two parts. The first part can be
configured via the Monitoring Mode screen in the service tool and shows the
individual parameters being monitored, the levels of severity that can be
activated and the trip points at which these warnings will activate. In some
cases these parameters can be changed by the user.
The second part is configured through the main configuration screen and is
where the engines response to the severity level can be set. If a level 2
(moderate severity) becomes active then a derate of the engines power can
be enabled. If a level 3 warning (most severe) becomes active then an engine
shut down can be enabled. In both cases these configurations can be
disabled so regardless of warning level the engine will continue to operate
until it is unable to do so.
Note: Due to changes in emissions legislation some emissions critical
diagnostics have fixed engine-response criteria, which is non-
configurable. These conditions are shown in section 14.3.
14.1.1 Monitoring Levels
There are three configurable Engine Monitoring options available within the
engine software. These options determine the engines response to the
activation of a parameters severity level. The three available options are;
o Warn (Always active)
o Derate
o Shutdown
Engine warning is always active and cannot be disabled. The derate and
shutdown parameters can however be enabled or disabled using the service
tool as shown below in table 14.1.
Monitoring Mode - EST Configurable Parameters
Monitoring Mode (listed under Miscellaneous in E
S
T)
ET Description
Range or Option
Description
Monitoring Mode Shutdowns Disabled/Enabled
Switches on or off the shutdown
feature
Monitoring Mode Derates Enabled/Enabled
Switches on/off the derate
feature
Table 14.1 Monitoring Mode Configuration
14.1.1.1 Warning
The Engine Monitoring warning is always active and cannot be disabled.
Activation of this Engine monitoring option ensures that upon the engine