Description
PMU-24 DL
PMU-24 DL is a new and enhanced Power Management Unit featuring all the benefits of the PMU-16, now with 24 high-side outputs and internal data logging memory as a standard. All output states, voltage, and current information are transmitted via CAN bus to a dash display to inform the driver of potential problems. All logged data can be downloaded from the device for later analysis.
All PMU are supplied with connectors and terminals
NOTE: compatible USB-can device is needed for setting up and programming
Decades ago, the critical electronic components in a race car were the ignition coil and points. Race cars are now sophisticated machines equipped with advanced engine management systems. Add to that dataloggers, radios, electric pumps, fans, and lights, and you end up with a lot of electrical equipment. All components need to be powered ON and turned OFF at the correct moments, and all components require circuit protection to prevent damage or fire in case of accident or component malfunction.
Historically these duties have all been managed using switches, fuses, and relays, but they have many shortcomings! First and foremost, each component must have its own switch, fuse, and relay, requiring wiring looms to run from the switch to each relay or component, adding complexity and weight. Fuses and relays are also susceptible to damage from vibration and high temperatures, both of which are commonplace in racing environments. Fuse failure is also difficult to diagnose during competition, and a driver is unlikely to be able to replace a fuse while racing. Partial solutions for this are automatic circuit breakers, but high ambient temperatures can cause breakers to trip well below their rating.
All of these problems can be solved by using intelligent power management units (PMUs). The newly developed ECUMaster PMU unit is at the forefront of power management technology. The PMU features 16 output channels that can be grouped for high-current devices. If more than 16 outputs are required, multiple PMUs can be connected via CAN BUS. The PMU is a modern device that packages the functionality of fuses, relays and more in one sleek and small package.
All power outputs can be programmed using a vast array or parametric and logic sequencing enabling fault detection, reset and automated contingency strategies. For example secondary fuel pums deployment during fault or low fuel pressure detection. CAN-Bus communication links the unit to the ecu and touch button keypad for comprehensive switching and control operations. For example multiple wiper delay and speed options all controlled from one push button via sequence and push duration selections.
GENERAL |
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Temperature range | AECQ100 GRADE1 (-40 to +125˚C) |
Operating voltage | 6-22V, immunity to transients according to ISO 7637 |
Enclosure | IP 60, bespoke CNC machined aluminium |
Size (mm) and weight(g) | 131x112x33, 385g |
Connectors | 1 x 39 Automotive connector, 1 x M6 stud for battery connection |
PC communication | CAN (ECUMASTER USBtoCAN, PEAK CAN, KVASER) |
OUTPUTS |
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High current outputs | 10 x 25A, 6 x 15A, 8 x 7A, outputs may be paired to increase continuous current capability. Current and voltage is measured for each output |
Total current output | 170A continuous |
+5V | 1x 500mA output for powering external sensors. |
INPUTS |
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Analog inputs | 16 inputs. 8 x 10 bit (0-5V), 8x 12 bit (0-20V with software selectable pullups/pulldowns) |
CAN Keypads | 2 x Ecumaster keypads (4, 6, 8, 12 keys) |
OTHER |
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Output state indication | 24 tricolour LEDs |
Accelerometer/Gyroscope | 3D accelerometer with 3D gyroscope for logging and crash detection |
Real time clock | Yes |
CAN BUS |
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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 |
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Logging memory | 256 Mbytes |
Logging speed | Variable, defined per channel, up to 500Hz |
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