Hybrid drive system block diagram - GF08.30-P-0001-03FLH
ENGINE 276.952 in MODEL 212.095
ENGINE 651.924 in MODEL 212.098 /298
Interlock circuit
The interlock circuit is used as protection to protect people against inadvertent contact with contacts of the high voltage components of the high-voltage on-board electrical system which are carrying a high voltage.
A 12 V/88Hz interlock signal is looped here through all high-voltage on-board electrical system components that are to be dismantled or opened. To do this there is a contact bridge in each removable high voltage plug connection which interrupt the interlock circuit during removal of the high voltage plug connection. The interlock circuit is also led switched in a series over the 12 V control units plug connection of the high-voltage components.
The interlock circuit is not shown in the following block diagram. The high-voltage on-board electrical system is shown schematically with an orange colored line. An overview of the interlock circuit and the high-voltage on-board electrical system can be found in the reference overview:
- Driving, function
- Monitoring a hybrid drive system, function
In document
Information about the 12-V energy management of the 12-V on-board electrical system and the 12-V alternator (for a diesel engine) are documented in the function description "energy management function".