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Inconsistent voltage drop on start

Utilizing PDM15. Checked all grounds and connections are good, battery has been charged and tested good. We were seeing an inconsistent voltage drop while monitoring battery voltage in the software. This would cause the pdm to power off and interupt startup sequence, sometimes i could get the car to start by holding the key down to start. Some times we saw a dip down to less than 1 volt while monitoring battery voltage in the pdm software. We were also using oscilloscope to do additional monitoring at the post of the pdm. The scope didn't see as big of a drop as the software was reading though (about 6v). Battery and grounds are all 0gauge wiring, and the car has a relatively simple setup. I also verified that we aren't tripping any of the set fuses to cause a shitdown. Anyone have any recommendations as to where we can go…

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Kyle R
2 hours ago

I can confirm my issue seemed to be related to be my cars stock keyed ignition cylinder that i was using. We switched over to using a toggle switch for 'key on' power and then a push button for starter. After switching to using that setup the issue was resolved.

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Deeworks
Deeworks
3 days ago · posted in Tech Forum

Changer Keypad from J1939 to Canopen

Hi Guys, so somehow I messed up and ordered my Blink Marine 12 buttons keypad with the J1939 protocol loaded in. I am able to see the Can data under the canbus analyser when I set my bitrate to 250kbps but the keypad show as disconnected and no buttons or LED is active. The ID in the analyser is 0x18EFFF21.


Using the CAN Transmit function of my PDM configurator, how can I change the Protocol from J1939 to Canopen? Keypad is the PKP-2600-SI model

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George
George
21 hours ago

Follow the video on our YouTube channel for changing the keypad baud rate. Then instead of sending the baud rate change command, send the j1939 to canopen command found in the keypad user manual

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current cut off

for a motor, is it possible for the PDM25 to detect a current drop of X value for example and cut power to the output rather than blow the fuse?


a momentary input trigger should be able to latch the output on/off and when the current of end of travel occurs to just cut the output to 0v (obviously triggering the fuse will make the output not functional till pdm reset, i just want it to switch off the output until next trigger)


*power windows*


thanks

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skyler.gibson
3 days ago

u can also set in output parameters or under generic function create a line that says output x current < x. so u just select the output Ur wanting to monitor the current output of and add that in and add a < saying the selected output current is less than the selected output and add your amp limit to the far right box in drop menu. turn on the number box and turn off the middle drop-down menu

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Key Pad

I have one of my Keypad buttons set up to start my car. I would like to know if there is a way to set up the same button to be used to shut down the engine?

I have the PDM controlling coils and fuel by a button and when it sees RPM. I would think you could add logic to turn off coils and fuel outputs if the RPM is above a specified # and the start button is pushed. Making it a Start/Stop Button.

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skyler.gibson
3 days ago

yeah you will need to create a counter


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samsam
sam

First Time User of PDM25

Hi team, I am just getting set to upload my config file to my PDM25 and have attempted to update the firmware on the bench powered by USB. Once completed the update to 1.1.6 the PDM connects to PC again but stays in Firmware update mode according to the data in LH bar. The last step in update was to upload a blank config file but I left it for 20 mins or so and nothing was happening, just the circle of death. Where am I going wrong?

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Hi, If the PDM is still in update mode, this means that the fw update was not successfull. It will stay in FW update mode until FW has successfully been loaded in. Please refer to the youtube video on our channel on how to do this


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Deeworks
Deeworks

Changing states of Keypad

Is it possible to change the state of a buttons on the keypad? I want to set buttons for cool-down mode that will turn on water pump and fans until it has cooled down enough, then I would like this buttons to return to the off states.

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The best way to do this is to have the Keypad button mode as momentary.

Also set the off state and state 1 of the button to be output 1 status, and both green.


Then in the output function, Have it as

Output 1 on if

Keypad Button State Equals 1

OR

Output 1 State Equals 1

AND

Temperature > 60


This will latch the output on if the temp is > 60 when you press the button.


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Punch-e EFI
Punch-e EFI

PDM25 restarts at cranking

We have installed 5 cars with PDM25 running the entire car. All of them runs ok, no issues at all


We install a new car, and in this case the PDM restarts at cranking, and it is related to the pdm because we move the pdm to another cars and the fault follows the PDM (wirings are exactly the same, so we just swaps the pdms between them). If i crank the car with the PDM connectet to the laptop, the car runs perfectly


Without the laptop connected, if i keep pushing the cranking button for 5-6 seconds, the pdm restarts and then, the car runs. I wanna know if the unit is defective, or maybe there is a firmware issue or similar.


Picture of the car just for attention


Regards


153 Views
Kyle R
6 days ago

I am also having this same issue on my car (240sx) on a recent install. I have not had any luck tracking this down. I have my setup wired into the stock ignition cylinder. Seems like i have to sit there and hold the key to start and wait for the PDM to restart, but it seems inconsistent for me.

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Brett Johnson
Brett Johnson

Starter only activates when laptop is connected to my PDM15

Hello. I have a weird issue. My car will only start when I connect my laptop to the PDM15. When the laptop is not connected I can hear the start seloniod click but it doesn’t crank. Is there a configuration update I can make to correct this?

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Hi there, can you make sure that the battery is well charged? This would usually happen because when you crank, the battery voltage is dropping down below 4V which is causing the PDM to turn off. When the laptop is connected, it can source its power from the USB instead when cranking

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software update

First, I dont know if this is the right spot, but these new forums are impossible to browse.


I just updated my PDM15 to 1.1.6 and man what a disaster that was. It deleted all my configurations, which whatever ill resend it.


Well resending it, while works, causing the connection to freeze (the send button keeps "loading" and the tx/rx bits freeze in connection info). So after fighting that for 15 min come to find out it actually is sending the config still.


Then come to find out it deletes all the CAN configs from the PDM, so even though the saved config had all my outputs setup based on CAN inputs, all those were now undefined. So had to reload can config files, and then go into all my outputs and reconfigure the function to repoint to the correct CAN input.


Maybe i missed a note somewhere saying the…

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George
George
May 25

When the firmware is updated it clears the config yes

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