MCflex keyless

MCflex keyless

ehb5175 / ehb5210

The HMCflex 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.

show full product desription


  • Construction machinery Construction machinery
  • Municipal utility vehicles Municipal utility vehicles
  • Special machines Special machines
  • Diesel units for industrial applications Diesel units for industrial applications
  • Agricultural engineering (agricultural machines) Agricultural engineering (agricultural machines)

Electrical Data


PIN 01: Oil pressure as NO/NC, programmable, switching or alaogue sensor
PIN 02: Generator monitoring, terminal D+
PIN 03: Temperature as NO/NC, programmable, switching or analogue sensor
PIN 04: Various, NO/NC
PIN 07: Auto start, NO/NC
PIN 09: External stop, NO/NC
PIN 13: Speed monitoring, terminal W, sensor or magnetic pick-up

Voltage range

6 – 32V (typ. 12 – 24V)

Power consumption

Typisch 50mA (in UB 8 – 24V)

Operating temperature

-20°C to +70°C

Storage temperature

-30°C to +80°C


All outputs are short circuit-proof
PIN 02: Generator excitation, terminal D+, 0,5A
PIN 06: Freely parametrisable, 7,5A (max. 1s) / 6,0A
PIN 08: Freely parametrisable, 40A (max. 1s) / 20A
PIN 10: Freely parametrisable, 70A (max. 1s) / 35A
PIN 11: Freely parametrisable, 40A (max. 1s) / 20A
PIN 12: Freely parametrisable, 70A (max. 1s) / 35A |
PIN 15: Freely parametrisable, 3,5A (max. 1s) / 3,0A
PIN 18: Freely parametrisable, 40A (max. 1s) / 20A

CAN bus interface

PIN 17/19: CAN2.0B, 250kBit, SAE J1939, EEC1, ET1, EFL/P1, VEP1, AMB, DM1, fault messages, auto start, speed adjusment, optionally adaptable

Operating hours counter


Daily operating hours counter



Display type

Dot Matrix LCD Display, transflective Dark-blue representation on grey background


17 x 2 characters, 5 x 8 dots per character


>1000 cd/m²

Contrast ratio (CR)


Background lighting

LED, white

Mechanical Data

Housing dimensions (W x H)

72 x 72 mm

Installed dimension (W x H x D)

66 x 66 x 130 mm

Installation cut-out (W x H)

66 x 66 mm

Housing material

PA 6 30 GB, black, UV-stabilised




Retainers or screw-fastening, 3 x M6

Degree of protection



Deutsch plug type HDP24-24-19PE

Testing standards


DIN EN 60068-2-3


DIN EN 60068-2-6


DIN EN 60068-2-27

CE marking

according to directive 2014/30/EU

Technical Drawings

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