- Mar 2, 2015
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This is the only picture of the inside of a volvo eps that I could find....
This tells me 2 things...
1. That there is stuff in there that may be able to be tapped into to bypass the current module function.
2. That these things can function as small boat anchors.
I guess we will find out when I can get back to the JY.
I've been reading a bunch of forums and info about these s40 pumps. Apperently, the delay in start up ( 2.5 seconds) is for the module to go into limp mode. This mode sets the PS pump at 75٪ output...about the sensitivity of 40 mph driving. No one has cracked the CAN code but it is in the works as of Aug. of this year....then that forum thread dried up.
My theory is that if the module can do it then an outside thing could do it too. Brushless motors have variable rpm controllers all over the interwebs. All the ones I found are 3 phase and these motors are reported as 4 phase motors. They use PWM to vary the speed. If I can disect the circuit board ( I'm no electronics guru...but a few here are ) then I could figure out how this particular 1 is controlled and how the relay is powered. Those two things will give me control.
I need to upgrade to MS3. I don't think my PNP2 will be able to calculate speed and control PWM based on that info.
Wish I knew how to build an Arduino to read the speed signal from my tko and send out a pwm based off of that. Then it could be a stand alone system and wouldn't need another controller. Great idea, @a91what.
This tells me 2 things...
1. That there is stuff in there that may be able to be tapped into to bypass the current module function.
2. That these things can function as small boat anchors.
I guess we will find out when I can get back to the JY.
I've been reading a bunch of forums and info about these s40 pumps. Apperently, the delay in start up ( 2.5 seconds) is for the module to go into limp mode. This mode sets the PS pump at 75٪ output...about the sensitivity of 40 mph driving. No one has cracked the CAN code but it is in the works as of Aug. of this year....then that forum thread dried up.
My theory is that if the module can do it then an outside thing could do it too. Brushless motors have variable rpm controllers all over the interwebs. All the ones I found are 3 phase and these motors are reported as 4 phase motors. They use PWM to vary the speed. If I can disect the circuit board ( I'm no electronics guru...but a few here are ) then I could figure out how this particular 1 is controlled and how the relay is powered. Those two things will give me control.
I need to upgrade to MS3. I don't think my PNP2 will be able to calculate speed and control PWM based on that info.
Wish I knew how to build an Arduino to read the speed signal from my tko and send out a pwm based off of that. Then it could be a stand alone system and wouldn't need another controller. Great idea, @a91what.