DC/AC converter function - GF54.10-P-2005FLM

MODEL 212.0/2 as of model year 2014 with CODE U80 (115 V socket) 

Function requirements, general 

• Circuit 15R ON

The electronic ignition lock control unit (N73) sends the status of circuit 15R via the interior CAN (CAN B) to the rear SAM control unit with fuse and relay module (N10/2).

DC/AC converter, general 

The DC/AC converter control unit (N24/3) converts the on-board electrical system DC voltage into a 115 V AC voltage. It is possible to connect small electrical devices which require this AC voltage (e.g. video game consoles, mobile phone chargers) to the 115 V power outlet (X58/34).

The rear SAM control unit controls operation of the DC/AC converter control unit.

Connection of a 115 V consumer to the 115 V power outlet is detected by the power outlet microswitch (X58/34s1). The rear SAM control unit supplies the power outlet microswitch with power.

If a consumer is connected to the 115 V power outlet, this voltage is switched through to the control input of the DC/AC converter control unit. The DC/AC converter control unit converts the on-board electrical system DC voltage into a 115 V AC voltage and supplies the 115 V power outlet. An LED integrated in the 115 V power outlet indicates the availability of the AC voltage.

The maximum available electrical continuous load is P = 150 W; up to P = 300 W is permissible for t = 2 s.

If the interior temperature of the DC/AC converter control unit rises above a defined limit value or if the output load exceeds the overload threshold of P = 160 W for t = 2 s, the DC/AC converter control unit switches off.

A calculation method stored in the DC/AC converter control unit prevents the power inverter constantly switching between ON and OFF when it approaches the limit value.

If undervoltage is detected by the energy management system, the DC/AC converter control unit is switched off and the power supply to the 115 V power outlet is interrupted.