With the MCflex, all functions of a mechanically controlled motor are controlled and monitored in a single unit.
Additional accessories or relays are superfluous. Freely programmable outputs also ensure a high degree of flexibility in the design of the machines. Furthermore, conventional motors can be integrated into existing CANbus networks and applications.


  • Robust motor control
  • Quick installation and conversion, and safe assembly
  • Safe functionality in a robust environment
  • Switching of 70A output current possible
  • Space-saving design with integrated ignition start switch
  • High display readability, even in poor visibility conditions
  • Individual configuration options via tool
MCflex Frontalabbildung mit Spiegelung
MCflex - Abbildung kompletter Lieferumfang
Abbildung Rückseite MCflex

The MCflex unit offers a multitude of functions for the control and monitoring of conventional but also electronically-controlled diesel engines. You can individually configure the settings for very diverse applications and different engine variants.

Transflective, backlit B/W display with automatic contrast adjustment
MCflex ensures perfect legibility even under poor lighting conditions.

UV-resistant, rugged PA6 housing. Secure installation with retainer or screw-fastening, 3 x M6
Fast installation and retrofit. Dependable functioning even in harsh environments.

Communication via CAN bus with the network
Integration of conventional engines in existing CAN bus networks and applications.

Pin assignments of the outputs are freely parametrisable. Up to 5 high-current outputs.
Flexible utilisation of the MCflex functionalities, tailored to the customer application. Output parametrisation with the display menu or the convenient ehbTools software. No programming required.

Pre-heat, by-glow and after-glow function, time- or temperature-controlled
Reliable starting process, even at very low temperatures. Less environmental impact and smoke generation.

Total operating hours counter and resettable daily operating hours counter
Reliable information about engine running times and required servicing. Transparent summary of operating times.

Password-protected menu settings and automatic logging of the last 20 faults
Access to relevant functions restricted to authorised personnel. Reliable reproduction of faults occurred.

With or without ignition starter switch
An ignition starter switch starts the engine either per key or electronically, that is key-less. For the key-less version, entering a release code via a start button initiates the start.


Why can't the device be switched on?

Check if the supply voltage is connected with the wrong polarity. The reverse polarity protection avoids damage to the electronics, but does not replace the correct polarity of the connecting cables.

How and why must the device be connected to terminal 30?

The power supply cables terminal 30 pin 14+16 must be wired with the largest possible cross-section and terminal 31 pin 5 of the MCflex directly to the battery poles of the battery.

This ensures that the MClfex has sufficient voltage available during the starting process. This is particularly important when the battery is cold, too small or partially discharged. In addition, the MCflex is much better protected against overvoltage, undervoltage and interference pulses as these are absorbed by the battery.

Is the emergency stop switch suitable for continuous operation?


Interference impulses with the two-pole version of the emergency stop switch cannot be dissipated to the battery and lead to damage to the electronics.

Why does the engine start as soon as it is switched on and not when it is started?

Check whether the cables for terminal 15 and terminal 50 were interchanged during connection.

The controller does not respond to input signals

The inputs must be connected to ground. The controller cannot detect plus signals.

The engine speed varies greatly

The output is overloaded and the transistor switches off. When it cools down, it switches back on. As a result, the coil alternately picks up and drops off.

A measurement at the output shows a low-impedance transistor, although it should be high-impedance.

A load must be connected to the output. Otherwise, the open-load detection behaves like a low-resistance transistor.

Can outputs be connected in parallel?

No, the outputs must not be connected in parallel!

Is the "External stop" input suitable as an emergency stop?

No, because there can be delays of up to one second!

One of the outputs starts pulsing

Output is overloaded. To prevent damage to the transistor, it starts to pulse through the overload protection.

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