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). Our newly developed PMU unit is at the forefront of technology. It provides 16 high current outputs (and use of multiple units if more outputs are required).
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 analog 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 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 IP65 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).
Temperature range AECQ100 GRADE1 (-40 to +125˚C)
CPU 32 bits automotive, 90MIPS
Reverse polarity protection Yes, internal
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
PC communication CAN (ECUMASTER USBtoCAN, PEAK CAN, KVASER)
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
Logical operators AND, OR, NOT, XOR, >, <, =, >=, <=, !=, isTrue, isFalse, Toggle, Flash, Pulse
Number of functions 100
Number of operations 250
Update frequency 500Hz
Special functions Wipers, blinkers
PMU Autosport Version
Ecumaster as a brand quickly became popular for delivering excellent
value for money products. This ethos was also noticed by high caliber
motorsport customers and OEMs , that developed a need for a more
professional line of products. For this reason, we would like to introduce
our new PMU16 AS.
The PMU16 Autosport Version is designed for demanding customers
and installations where reliability and robustness is priority.
Autosport connectors represent the highest quality connector
available, and are the standard for professional motorsports and
aerospace industries. The battery connection utilizes a RadlokTM
connector rated to 200 amps that can be disconnected without the need
for any tools. The output connector is a custom 18 pin, 12 gauge
connector designed and manufactured specifically for Ecumaster. The
unit features an IP65 environmental protection rating, permitting its
use in the harshest of conditions, including dusty and wet
Compared to the standard PMU16, 6 low side outputs have been added
and are rated at 2 amps per channel. 14 of the main output channels
are rated at 25 amps, with two output channels rated at 40 amps.
As always with Ecumaster products mating connectors and terminals
are included at no extra cost, which represents a substantial savings
and saves the hassle of ordering separate components.
Standard, Datalogging, Autosport Pro version