3.4 Operation monitoring Operation Operation monitoring by EMR3 z The EMR3 system operates the engine con- dition and itself. z The states are indicated by the fault lamp. z Lamp test: The fault lamp lights for about 2 s after ig- nition (ignition lock stage 1). z Steady light: There is an error in the system or a vari- able of the engine (temperature, pressu- re, etc.) is in the warning range. Depending on the fault, the engine perfor- mance can be reduced by the EMR3 to protect the engine. z Fast flashing: Attention, the engine is in danger and must be switched off. The control unit switches the engine off automatically depending on the ap- plication.
To cool down the engine before switching off, the control unit can command forced engine operation at low idling speed or automatic switch off. There may be a start lock after stopping the engine. Additional control lamps, e.g. for oil pres- sure or oil temperature may be switched on if necessary. With the override button, the power re- duction can be bypassed, the automatic shutdown delayed or a start prevention bypassed to avoid critical situations. This overriding of the engine protection func- tion is logged in the control unit. The start lock is released by switching off the system with the ignition key for about 30 s. 3 Display instrument Possible displays:
z Colour scale Display of operating state by coloured areas (green – OK / red – take suitable action) z Measured value scale Actual value can be read off directly. The nominal value should be taken from the Technical Data. ( 51 ) . 19