Deutz EMS2, System Description

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EMS 2
System functions
4.2 Engine protection functions
4.2.1 General
The following table contains an overview of the measurement variables which can be monitored, together
with the relevant, possible engine protection functions.
●
If the measurement variable lies within the warning range , the diagnostic lamp is continuously illumi-
nated. As a result of a command via the CAN interface to the EMR or MVS, the power is reduced . If the
measurement variable exceeds/does not achieve the recovery threshold, the lamp is extinguished again.
●
A reduction in power is only possible in combination with EMR and MVS.
●
If the measurement lies within the shut-off range , emergency engine shut-off is carried out following
the expiry of a waiting period. The diagnostic lamp flashes rapidly (frequency approx. 1 Hz). Shut-off is
effected either
- via a shut-off solenoid or
- via the CAN interface on other electronic control units (EMR, MVS)
●
Limit values which are exceeded or not achieved are documented in the fault memory .
●
The fault message is output if the diagnostic button is actuated during engine standstill
- as a flashing code via the diagnostic lamp.
- with a notebook connected via the ISO9141 interface with the SERDIA diagnostic programme.
- via the ISO J1708/1587 interface according to standard.
●
Starting prevention can be recognised via the rapid flashing of the diagnostic lamp (1Hz) in the event of
engine standstill. If the EMS 2 has shut the engine off on the basis of the engine monitoring functions,
restarting is prevented. The same applies if monitoring is carried out during standstill, and engine star-
ting is blocked due e.g. a low coolant level.
●
The engine can be restarted by switching the ignition off/on (terminal 15).
●
Outputs may also be used to initialise lamps or relays if limit values are exceeded or not achieved, see
Chapter entitled Outputs 5.2.
Monitorable measurement variable
Possible engine protection function
1
1
The configuration is programmed in the factory.
Warning Power reduction Emergency engine
shut-off
Speed x x
Oil temperature x x x
Coolant temperature x x x
Cylinder temperature 1 x x x
Cylinder temperature 2 x x x
Oil pressure x x x
Coolant leveld x x x
Oil level x x x
Reserve signal T1 x x x