System technology in vehicle engineering for platform manufacturers

Are you a platform manufacturer of special vehicles (trucks, trailers or pick-up trucks) and you search for solutions for optimum power distribution and protection of loads at overcurrent and short circuit?

As a specialist on the score of system technology we offer you flexible complete systems or single components which can efficiently be used also for small-size series applications.

In the range of vehicle engineering, we offer you:

Load protection by means of circuit breakers
Load protection by means of smart power relays
Power distribution system Power Board Modules
Central electrics
Power distribution systems with CAN-bus connection
Flexibility
User convenience
Remote access
Ergonomic design
Enhanced reliability

Examples of E-T-A solutions

Power management system for battery and tail-lift control
Power management system for battery and tail-lift control
Request:

Requirement of a system to monitor the charge condition of the second battery of a trailer

Release of the tail-lift control depends on the loading condition

Overcurrent protection for charging cables and plug-in connectors

Voltage rating DC 24 V

Current rating of charging cable protection 50 A

Current rating tail-lift 75-300 A

Solution:

Mounted in a moulded housing with protection degree IP65. Selection of housing form according to customer-specific installation area.

Connecting cables are led into the housing via fittings. A version with blade terminals is optionally available.

While the tail-lift is used, loading is switched off to avoid overloading of cable and plug.

If an overload is detected, the system switches off and will reset after a cool-down period.

There will be an acoustic alarm when the battery needs re-charging.
From a concept ...

... to a ready-made solution
Power distribution for Road Trains
Power distribution for Road Trains
Request:

Power distribution for the illumination and signal systems of a road train

The central electric circuit of the traction engine is too weak to be able to supply all trailers. Therefore a booster box is required.

According to the specifications of the car manufacturer, the power distribution shall comprise the connection of traction engines to truck trailers with 30 A to 12 V or 15 A to 24 V.

Connection via customer-specific connectors.

Resettable circuit breakers for all illumination and signalling systems.

Integral short circuit and overcurrent protection.

Reverse polarity protection must be ensured.

Average life span (MTBF) > 150,000 hrs.

Mechanical capacitance min. IEC529 (IP67).

Solution:

The signals for rear lights, indicators left and right, reversing lamps and stop lights are boosted.

Realisation via mechanical relays.

Each relay is protected by a 1610 circuit breaker.

The lid can be opened without a tool.

Mounting on the rear of the traction engine.

Power supply via traction engine.

Relay activation via two custom designed 3-pole connectors from the traction engine.

A 7-pin connector (SAE J560) serves as load output, it is connected with the trailers.

Circuit breakers and relays are pluggable.
Robust design from power distribution ...
... to the connectors
CAN bus battery master switch
CAN bus battery master switch
Request:

System as a main switch function (disconnection of battery and on-board electrical system)

Activation/control via CAN bus.

Voltage ratings: 12VDC or 24 VDC

Low voltage detection

Switch-on without time delay

Optional switch-off with adjustable time delay

Solution:

MPR10 bistable power relay as a battery isolation switch

CANR-300 configurable multi-functional relay as control unit.

The power relay immediately disconnects upon detection of undervoltage. (No automatic re-start to increase safety).

Switching condition of the power relay can be reported back via CAN bus.

Activation can optionally be via CAN bus or via hardware switch.
From 3D design ...

... to a ready product