12 February 2017
13 February 2017
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Preconfigured Central Controller

The freely programmable electronic control unit ESX is an independent measurement and control device for the sensor-actuator management. Multiple independent or linked tasks can be processed in real-time..


Flexibility / scalability

Due to the extension possibilities via 2 internal interfaces, the control unit covers a wide range of applications for your machine. I/O and interface extensions are available.
It is also possible to realize customer-specific, interference-free expansion boards quickly and without affecting with the actual certification of the control unit.

Ambient conditions
A robust aluminium die cast housing (Protection IP65, opt. IP67, with GORE-TEX membrane for pressure compensation) provides both, a high level of protection against electromagnetic interferences as well as reliable protection against mechanical stress.
The ESX was developed especially for use in vehicles and machines, which have to function reliably in harsh ambient conditions and extreme operating temperatures of -40 … +85°C (-40 … 185°F).

The ESX was developed and has been approved by the TÜV (German Technical Inspectorate) for applications in safety-critical applications up to SIL2 in accordance with IEC 61508. A second switch-off path via a safety relay is available for the digital /PWM outputs.

Diagnosis and error handling
All inputs and outputs are protected against overvoltage and short-circuits and are diagnosable.

Application examples

  • Controlling the entire work hydraulics of amobile machine
  • Hydrostatic propulsion control with anti-blocking system (ABS) and traction control system (TCS)
  • Gearbox control
  • Tilt and level control
  • Controlling proportional valves without additional amplifiers or controller cards, either via PWM-outputs (pulse-width modulated outputs) with internal current measurement or via outputs for proportional valves with Description integrated circuitry (PVG).

ESX is a product of
Sensor-Technik Wiedemann GmbH
All rights are reserved.


CAN1 x CAN, optional 2nd CAN, 2.0 B interfaces Full CAN, low/high speed up to 1 Mbit/s
RS2321 x RS232, programmable baud rate up to 119 kBit/s
System Data
Power supply9 ... 32 V DC
Current consumptionApprox. 500 mA without power output, stand-by
< 1 mA, total current max. 30 A
Digital/Speed input_HL_SW16 x input, high/low active (software-configurable), limit frequency up to 6.5 kHz, short-circuit proof and diagnosable
Digital-/PWM- output_4A_HS3 x 4 A, high-side, 0 ... 100 %, short-circuit proof and diagnosable
5 x 4 A, high-side, 0 ... 100 %, with current measurement, short-circuit proof and diagnosable
Multi-function input_UI8 x analog inputs, 4 ... 20 mA or 0 ... 8.5 V , 10 bit, switchable via software, short-circuit proof and diagnosable
alternative PVG outputs (instead of PWM)Up to 12 PVG outputs for controlling Danfoss valves (20 %
UB•... 80 % UB)
Sensor sup- ply_8.5V1 fixed-voltage output 8.5 V , max. load current?? mA, short-circuit proof
Internal connection portUp to 2 expansion boards with up to 6 inputs / outputs each, e.g. for digital or analog I/Os, PVG outputs for Danfoss valves, input for encode r , comm unications interfaces or customer-specific design
Mechanical Data
Connector68-pole mobile-compatible connector (Tyco / AMP)
HousingIP 65, opt. IP 67, aluminum die cast, GORE-TEX
membrane for pressure compensation
DimensionsApprox. 170 mm x 195 mm x 72 mm (6.69" x 7.68" x 2.83")
WeightApprox. 4.0 kg (4.4 lbs.)
Environmental Requirements
RequirementsInspections acc. standards and requirements for vehicle, agricultural machinery and the construction machinery industry as well as CE conformity
Operating temperature-40°C ... +85°C (-40°F ... +185°F) housing temperature
Processor System
RAM256 kByte, optional 1 MByte
Processor16-bit controlle r , 20 MHz / 40 MHz, separate system supervisor with watchdog



Code 1030101000200 ECU ESX 2C FRAM TYPE ‘A’

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