ECUMaster Power Management Unit (PMU)

£829.00 (+VAT)

Decades ago, the critical electronic components in a race car were the ignition coil and points. Race cars now feature advanced engine management systems, antilock brake systems, paddle shifters, dataloggers, radios, electric pumps, fans, and lights. All components need to be controlled at the correct moment, and all components require circuit protection to prevent damage or fire.

Traditionally, fuses and relays served all of those purposes, but they have many disadvantages like complicated wiring looms, sensitivity to vibration/temperature, and difficult diagnostics.

All of these problems can be solved by using intelligent power management units (PMUs). ECUMaster’s newly developed Power Management Unit PMU unit is at the forefront of technology. It provides 16 high current outputs (and use of multiple units if more outputs are required).

For more information, full specification and download files, please see the description below:



ECUMaster Power Management Unit (PMU).

One of the main advantages of the PMU is continuous current sensing and self-resetting function if the current exceeds a defined level. All output state, voltage and current information can be logged and transmitted via a CAN bus to dash displays to inform drivers of potential problems.

An additional advantage of the PMU system is the ability to define logic for controlling outputs. This is done with data from analogue input channels or CAN bus data, and math operations can be defined for each channel. The PMU is also equipped with LED indicators to show the status of each output.

With use of CAN bus keypads or steering wheel switches, all wiring is vastly simplified and lightened.

Two unique features are the inbuilt accelerometer and gyro for logging and “inertia switch” in case of an accident.


The PMU is assembled according to IPC-S-815A standards to ensure product reliability. The device is manufactured on an automated assembly line with optical inspection, and automated testing (including burn-in). The PCB material and design, special surface coating and IP60 enclosure ensure reliability even in the harshest environments. Carefully selected components allow for continuous and reliable operation across a very wide temperature range (AECQ-100 GRADE 1 (-40 to +125˚C).

ECUMaster Power Management Unit (PMU) Specification:


  • Temperature range AECQ100 GRADE1 (-40 to +125˚C)
  • CPU 32 bits automotive, 90MIPS
  • Operating voltage 6-22V, immunity to transients according to ISO 7637
  • Enclosure IP 60, bespoke CNC machined aluminium
  • Size (mm) and weight(g) 131x112x32.5, 345g
  • Connectors 1 x 39 Automotive connector,
  • 1 x M6 stud for battery connection


  • High current outputs 10 x 25A(cont.), 6 x 15A(cont.) with overcurrent and overheating protection. Outputs may be paired to increase continuous current capability. Current and voltage is measured for each output
  • Total current output 150A continuous
  • Output current control step 100mA
  • Wipers output Dedicated output with wiper braking feature
  • +5V Monitored 5V, 500mA output for powering external sensors.


  • Analog inputs 16 inputs, 10 bit resolution, 0-5V (protected), with software selectable 10K Ohm pullup and pulldowns
  • CAN Keypads 2 x ECUMaster keypads (4, 6, 8, 12 keys)


  • Output state indication 16 bicolour LEDs
  • Accelerometer/Gyroscope 3D accelerometer with 3D gyroscope for logging and crash detection
  • Real time clock Yes, super capacitor for backup power (up to 3 days)
  • CAN interface 2 x CAN2.0 A/B
  • CAN standard CAN2.0 A/B – 125, 250, 500, 1000 kbps
  • Input/output stream User defined with bit masking,
  • up to 100 input messages


  • Logging memory 256 Mbytes
  • Logging speed Variable, defined per channel, up to 500Hz

Please note, Logging is only available on Version PMU-16DL


  • Logical operations AND, OR, NOT, XOR, >, <, =, >=, <=, !=, isTrue, isFalse, Toggle, Flash, Pulse
  • Number of functions 100
  • Number of operations 250
  • Update frequency 500Hz
  • Special functions Wipers, Indicators

Download Files


PMU Manual 1.02 (4.06.2018)


PMU software change log

Tech Notes


Configuring CAN BUS between EMU BLACK or EMU CAN and PMU16


Improved Power Control Model for PMU16

Estimated dispatch time within 3 working days.

Picture for illustration purposes only. Actual parts may differ slightly in appearance.