Ex100-2 Slow hydraulics

[Diesel Dave]

@Diesel Dave I was vacuuming out all the dirt this weekend look what I found


Cant tell if its 31976 or 31576

Good find !…write that down somewhere .

 

[Chris1113]

Good find !…write that down somewhere .

Haha yes its going in a plastic bag in a filing cabinet also took pictures!

 

[Chris1113]

It’s me 2 months later. Found out all my sensors were shot. I got a new angle sensor then used two buck converters from Amazon to manually mimic the voltage communication to the PVC for the DP and P sensors. I got new sensors in the mail but the it’s been working fine the way I have it I just haven’t got a reason to change them out. I just having to manually turn the screw in or out on the buck converters to set the voltage I want to the PVC which in turn gives me the load I need. I’ve been doing this for about two months now.

 

[Diesel Dave]

Hey Chris, @dcar and I have been working on a EX120-2 and are questioning a new aftermarket DP sensor that was just installed. The DP sensor doesn’t appear to be functioning as it should.
@dcar ordered the same buck converters as you . Can you share how you wired in the buck converter and what voltage was set at to mimic the DP sensor ?

 

[Chris1113]

Hey Chris, @dcar and I have been working on a EX120-2 and are questioning a new aftermarket DP sensor that was just installed. The DP sensor doesn’t appear to be functioning as it should.
@dcar ordered the same buck converters as you . Can you share how you wired in the buck converter and what voltage was set at to mimic the DP sensor ?

Hi Dave , I used the power and ground going to the PVC to power the buck converter. I just removed the tab on the back of the PVC main connector then in order to remove the pins you have to have like a small L tool to push up the retainer clip holding the pin in from the front, then you can remove the pin from behind

5V supplies the buck converter - it has a screw you can screw in and out to adjust the voltage. Leave it around 2.2 Volts, I think it might work better to have the P sensor on a buck converter to, when you adjust the P volts you want it to be 1.8-1.9 volts for fast hydraulics, if you need more load like going up hill or digging a root I adjust the P sensor to around 2 volts. The hydraulics will be slower but you won’t stall as easily.

I found that voltage range has the be lower or equal to the DP sensor but not by a lot because the more you turn it lower the quicker you will stall when you’re doing something that requires a lot of load. i tried a bunch of different voltage ranges and this is the only combination that worked

 

[Chris1113]

@Diesel Dave Power and ground for that specific sensor not the PVC as a whole. Each sensor has a power ground and sensing wire going to the PVC to communicate the voltage the sensor is outputting. I had to make these wires. One end is going to the PVC power/ground for sensor then into the buck converter IN side. The OUT side is only the sensing wire back to the PVC

 

[Chris1113]

https://www.mouser.com/ProductDetail/Aptiv-formerly-Delphi/PPI0001483?qs=HumNWfwekiGhMmyxdda0VA%3D%3D&countryCode=US&currencyCode=USD

Let me double check what terminals I got because I got a few different types

 

[Diesel Dave]

Thank you Chris !

 

[dcar]

Hello Chris, on the Buck converter where is the screw to set the in voltage? I see the push button pots or are you talking about the tiny screw on top of the blue square thing?

 

[Chris1113]

@dcar Hi dcar yea it’s the gold screw on top of the blue square

 

[dcar]

so set that for the 2.2vdc.? what am I setting when I push the pots and it adjusts the voltage? must be the volts out. Should it be set to anything?
You mentioned putting one on the P sensor also. Is that still your thinking and what settings do you recommend.

 

[Chris1113]

so set that for the 2.2vdc.? what am I setting when I push the pots and it adjusts the voltage? must be the volts out. Should it be set to anything?

The voltage you see on the screen will be the voltage that’s going out. Yes set it to around 2.0 to 2.2. I might depend on what your P sensor voltage is. In your case since you just have one mimicking the DP sensor voltage. You might have to play around with the range. I would test 0-5 volts first, see if the hydraulics act different at all

 

[dcar]

are you back probing the plug to see the voltage in so you can adjust it?

 

[Chris1113]

I’m mimicking both sensors in my setup

View attachment IMG_0388.jpeg

 

[dcar]

Okay I put mine at the plug for the DP sensor. I am no electrician and this is all above me. So I need to see where I can meter the voltage in so I can adjust it.

 

[Chris1113]

What I did was identify the power and ground pins for each sensor using the manual. I removed the original terminals and crimped my own wires and terminals, then inserted them into the now-unused power and ground slots on the PVC connector that originally went to the sensors.

Each sensor normally receives 5 volts from the PVC, and the feedback wire communicates a signal back to the PVC. In this setup, you’re bypassing the sensor entirely. You’re just using the original power and ground wires to feed the buck converter. Once you have power to the converter, you take the OUT terminal and wire it into the sensor feedback pin on the PVC connector.

 

[Chris1113]

View attachment IMG_0388.jpeg

 

[dcar]

on the P sensor the three wires are they the same as the N sensor where 1&3 are the 5v and 2&3 are the signal voltage?

 

[Chris1113]

on the P sensor the three wires are they the same as the N sensor where 1&3 are the 5v and 2&3 are the signal voltage?

Yea I think so. I didn’t really work with the N sensor much. Is that the engine speed sensor?

 

[dcar]

right. So I am going to put the buck converter at the plug for the P sensor. 3&2 in and 2 out. The voltage in at 1.8 and voltage out the same