Note: PDM is under development, will be officially released during 2019.
Note on REV2 PDM Prototype test units: The planned low power sleep isn't available on these units yet. Even with all outputs off, the PDM draws 0.07A constantly. Use a battery disconnect switch for extended storage periods (a low power mode will be available in production units, drawing 0.1mA in sleep mode).
PDM output functions
Up to 4 outputs can have the same function set.
Running multiple outputs for the same function will increase the available current.
Note: If you need 40A in total for something, set two outputs in parallel to 2x20A.
1. Output function, see below list of description.
2. Extra description.
3. Selected fuse on the specified output.
4. How to reactivate the output if a "fuse is blowed" has been detected.
The output is always off. (When an output is disabled, it can be used as an input by reading the "output voltage" in "User output" setups).
The output is constantly supplying 12V even in PDM low power mode.
Used to supply the ECU, injectors, solenoids etc. It's activated by the PDM digital input function Ignition key.
Note: It's highly recommended to always use output 1 to supply the ECU. As the ECU needs to be powered to communicate with the PDM, output 1 is automatically assigned as ECU Supply at the first startup.
ECU Supply, power hold
Same as the above ECU SUPPLY. But when the PDM digital input function Ignition key is turned off, the engine is turned off, but the ECU is automatically kept on for some additional time to allow it to run fans and other functions after the engine is turned off. The additional time is set by the ECU, see power hold. No additional wiring is needed to use this function with the PDM (no relays etc. as would be necessary without the PDM).
ECU Auxiliary Supply
Turned on with the PDM digital input function Ignition key. Unlike the ECU Supply, this output is off during firmware updates. Used to supply for example the ignition system and other ECU related loads not supplied from the ECU Supply outputs.
ECU Auxiliary Supply, power hold
Same as the above ECU Auxiliary SUPPLY. But when the PDM digital input function Ignition key is turned off, the engine is turned off, but the ECU is automatically kept on for some additional time to allow it to run fans and other functions after the engine is turned off. The additional time is set by the ECU, see power hold. No additional wiring is needed to use this function with the PDM (no relays etc. as would be necessary without the PDM).
Starter Motor Solenoid
Triggered from the PDM digital input function Starter. Does not require the ECU to be on. When the starter is running, the PDM temporarily turns of High/Low Beams, wipers etc. to save power.
Turn signal left/RIGHT/HAZARD
Controlled from the PDM digital input functions Turn signal, left, Turn signal, right, Turn signal, Hazard. Flashes at 3Hz.
Wipers low/HIGH speed
Controlled from the PDM digital input functions Wipers, Low and Wipers, High. When both inputs are active at the same time. Only the "Wipers high speed" output is active.
If the PDM digital input function Wipers, Park is configured, the wipers will stop the moment this input is activated.
Lights low beam
Controlled from the PDM digital input function Lights, low beam. If this input isn't configured, the lights will be turned on automatically when the engine is running.
Lights high beam
Controlled from the PDM Digital input function Lights, high beam.
Controlled from the PDM digital input function Lights, General. If this input isn't configured, the lights will be turned on automatically when the ECU is powered.
User outputs 1-6
For user configured functions that need to function without the ECU being powered.
Controlled from the ECU
These outputs are controlled directly from the ECU under the normal ECU output settings. These can be fuel pumps, radiator fans, etc. With or without PWM control. When the ECU is turned off, these outputs are also turned off.
reset output faults
Pressing the reset output faults will clear and reset all stored output faults stored in the PDM.
(the above example assumes you have vehicle speed correctly configured in MaxxECU)
1. Enable a user output on the wired PDM output.
2. Name the output function properly, set condition to suit your need, and optionally you can trigger a PDM digital input.
Note: More examples and information will be available here when product is available.