Energy management, function - GF54.10-P-0003G

MODEL 463.237 /271 up to 31.5.12 as of Model Year 2010 /YoM 09

Fig 1: Identifying Energy Management Function Diagram

Courtesy of MERCEDES-BENZ USA

Function requirements, general

Circuit 15R
Socket microswitch in 115 V socket is closed (115 V consumer inserted)
Electrical output supplied is less than or equal to the permissible continuous electrical output (P= 150 W)
Temperature inside DC/AC converter control unit is within the permissible temperature range
Input voltage lies within the permissible voltage range U < 11.5 V and U < 16.0 V
After t = 2 s, the output load is P < 150 W

DC/AC converter, general

The rear signal acquisition and actuation module (SAM) controls the operation of the DC/AC converter control unit. If the function requirements are met, a 12 V control signal is sent via the socket microswitch in the 115 V socket to the control input of the DC/AC converter control unit.

The socket microswitch integrated into the 115 V socket is only closed when a 115 V connector is inserted.

This socket microswitch then actuates the DC/AC converter control unit, which converts the on-board electrical system DC voltage to a

115 V AC voltage. An LED integrated into the 115 V socket indicates the availability of AC voltage.

Appropriate small 115 V devices can be connected (e.g. video game consoles, mobile phone chargers). The maximum continuous electrical load which can be supplied is P = 150 W.

If the temperature moves outside the permissible temperature range or the output load reaches the overload limit of P = 150 W, the DC/AC converter switches off.

A hysteresis algorithm in the DC/AC converter control unit prevents the converter from constantly switching between ON and OFF if the system is near the respective limit value.

Rear SAM control unit with fuse and relay module, component description	N10/2	GF54.21-P-6030G
DC/AC converter control unit, component description	N24/3	GF54.21-P-4127G
115 V socket, component description	X58/34	GF54.10-P-2101G