Function check with diagnosis instrument Component description Main menu Limits for the TWD1231VE There are 16 sub-menus to choose from the main menu: Alarm values Highest permissible values of charge air temperature, coolant temperature etc. If the alarm values are ex- ceeded, the system reduces the fuel value until the value falls within the permissible value again. The en- gine must be re-started to get normal power back.
Engine speed Control rod Absolute pressure Temperatures Fuel consumption Inputs/Outputs Engine history Operation time Basic data Charge pressure Relative loading Battery voltage Pre-heating Accelerator Fault codes Nominal engine speed Engine speed The following alarm limits are pre-programmed into the control unit: kPa Highest permissible charge air temperature* ...............................................150 ° C 375 400 Highest permissible fuel temperature ........... 85 ° C 350 Highest permissible coolant temperature on/off ......................................................
103/96 ° C 325 Highest permissible engine speed ............2500 rpm 275 300 Highest permissible charge pressure, please refer to the Max curve in the diagram. 250 200 225 Menus are selected with the arrow keys. * Agri Boost; 120° C 175 Limp home values (emergency control values) The basic values are used by the control unit to allow the engine to be driven if there is a technical fault in the system or its auxiliary equipment, sensors etc. 150 125 100 Choice of menu and sub-menu 900 1100 r/min 1300 1500 1700 1900 Scroll to relevant menu: For next language, press the arrow For previous language, press the arrow The following values (Limp home values) are stored in the control unit:
294 kW 275 kW 310 kW 308 kW 256 kW Limp home Charge air temperature ................................. 55 ° C Diagram for charge pressure, TWD1231VE NOTE! Pressure is measured as absolute pressure. Each menu has one or several sub-menus. To reach them, press the execute button. Fuel temperature .......................................... 40 ° C Coolant temperature ..................................... 10 ° C Choice of sub-menu: Press the execute button when the cor- rect menu is shown on the display. Charge air pressure ....
Please refer to the diagram Engine speed ..........................................1000 rpm Extreme values Highest and lowest values, and the time that an ex- treme value has been exceeded are stored in the con- trol unit. These values can be read by means of a diag- nosis program (please refer to the “Function check with diagnostic program“ chapter) When you have selected the engine speed menu, for example, and have pressed the execute button , the display shows the sub-menu, which is the current engine speed. If the menu contains several sub-menus, these are reached by pressing the arrow keys. The following extreme values are pre-programmed into the control unit:
Scroll to relevant sub-menu: For next sub-menu, press the arrow key Display sub-menu: Press the execute button and the meas- urement value is shown constantly on the display. Charge air temperature .................................. 110° C Low charge air temperature ...............................0° C High fuel temperature*.....................................55° C Low fuel temperature .........................................0° C Return to main menu: Press the execute button and the next menu is displayed.
High coolant temperature ................................95° C Engine power (kW) 256 275 294 308 310 Low coolant temperature ...................................5° C High charge air pressure** (kPa) 295 295 320 325 325 High charge air pressure .... Please refer to the table High engine speed ............ Please refer to the table High engine speed (rpm) 2100 2000* 2000 1900 2000* * Agri Boost; 60° C * Agri Boost; 275/310; 2200 rpm ** Absolute pressure 34 19