Functional Scope Of Engine, PSM, Function - GF54.21-D-3007TSA
Model 907
with code ED5 (Parameterisable special module)
Engine speed regulation
Special functions
The parameterizable special module (PSM) control unit (N26/15) also enables functions in the "Engine" control unit to be influenced.
For this purpose several parameterizable function modules have been implemented which ensure the correct operation of the "Engine" control unit.
The control units for gasoline engines do not support the engine functions of the parameterizable special module (PSM). In other words, the engine speed control, speed limit, external engine start and engine stop functions cannot be implemented in vehicles with gasoline or gasoline/gas engines.
Engine speed control function
The engine's rotational speed can be regulated through the engine speed control function.
On the one hand several fixed rpms can be specified, while, on the other hand, the RPM can also be freely adjusted using the push button switches.
For safety reasons, the working speed control function can only be used on a stationary vehicle with the parking brake applied.
Power take-off function
The power take-off function on vehicles with power take-off is used to control activation of the power take-off.
To prevent damage to the transmission, various conditions can be queried.
Function of speed limit
The speed limit function can be used to switch on a parameterizable speed limit.
Engine start and stop function
The engine start and stop functions enable the engine to be started and stopped using the PSM control unit.
The engine start and engine stop functions are also available when the working speed control is active. If, following engine stop, the working speed control is deactivated, external engine start is no longer possible. An ignition change is required to reset the engine start and engine stop function.
Electric step function
It is possible to actuate up to two electric steps independently of each other using the "Electric step" function module in the PSM.
Parameterizable options for function enable
The software includes several options which can be used to activate and deactivate specific function modules and a number of specific functions of these function modules.
These are available in the individual functions under "Properties".
| Optional | Description |
|---|---|
| Function "Working speed control" | Activation of working speed control function module |
| Function "Rpm limitation without working speed control" | Activation of rpm limitation function without active working speed control |
| Function "Power take-off" | Activation of power take-off function module |
| "Activation of power take-off despite unfulfilled switch-on conditions" | This triggers one of the two following requests:
|
| "Actuation of solenoid valve through PSM control unit" | Select whether the power take-off solenoid valve for the power take-off is connected at the PSM control unit. |
| Function "Speed limit" | Activation of speed limit function module |
| Function "Engine start" | Activation of engine start function module |
| Function "Engine stop" | Activation of engine stop function module |
| Step 1 | Activation of step 1 |
| Step 2 | Activation of step 2 |
| Overview of system components for parameterizable special module (PSM) | GF54.21-D-9998TSA |