DC/AC Converter Control Unit, Basic Function - GF54.10-P-9890A

Model All (CAR) with code U67 (230V socket in rear passenger compartment) 

Model All (CAR) with code U80 (115V socket) 

Overview 

This document contains information on:

• General 
• Function requirements 
• Function 

General 

The DC/AC converter control unit provides alternating voltage for sockets in the vehicle. The DC/AC converter control unit is located at the right in the trunk behind the trim.

Function requirements 

• Circuit 30t ON
• Circuit 15 ON

Function 

The DC/AC converter control unit converts the DC voltage of the onboard electrical system into AC voltage. Small electrical devices that require an AC voltage (e.g. video game consoles, chargers) can be connected to the socket. The maximum available continuous electrical load is 150 W, also briefly permissible for 2s is a load up to 300 W.

The DC/AC converter control unit supplies the microswitch in the socket with voltage. If a consumer is connected to the socket, voltage is switched through to the control input of the DC/AC converter control unit. The DC/AC converter control unit then switches the AC voltage through to the socket.

The DC/AC converter control unit switches off if the temperature inside the DC/AC converter control unit increases above a defined limit value or if the output load exceeds the overload threshold of 300 W for 2 s. A calculation method stored in the DC/AC converter control unit prevents the power inverter from repeatedly switching on and off, when the output load is close to the respective limit value.

If undervoltage is detected by the energy management system, the DC/AC converter control unit is switched off, thereby interrupting the power supply to the socket.