FREQUENCY MEASURE

[pinias]

Hello All,

Does any one have used the frequency input pin of the MC050-10 controller? had it worked?  I have tryied to connect a magnetic pick up sensor. the sensor is sending a sine wave form 30 mV peak to peak however the controller does not pick up the signal.

according witht he technical specification pin/out of the controller it should work. I may be doing something wrong in the pin configuration.


Thanks

[Stefan]

Hello,

Your sensor has to send a voltage that varies between 0 and 30 mV otherwise it's not possible for the input to register it.

With PinConfig1 set to 1 the threshold should match, according to the API specification for the controller. You find the API specification in the Hardware file for the controller.

This is the thresholds for PinConfig1 = 1:

Rising Min/Max 0,191V/0.279V
Falling Min/Max 0.067V/0.187V

Stefan

[pinias]

Does it matter if it is a sine wave form?

Regards

[Stefan]

Hello,

Sorry for the late answer.

No, it doesn't matter.

Best regards
Stefan

[pinias]

Hello Stefan,


look, I need to get clutch RPMS, so I installed a KKPG16708 PICK UP SENSOR.  I am using a MC050-10 controller and I am using PIN 18 for inpit of the pick up sensor.

the picture attached shows the pin config and the way the freq to rpm block is connected. I understand in thsi way it should work or I should be able to read RPM, however I read nothing.

what could I be doing wrong?

My system is 24VDC.

this is the fisrt time I am using a pick up with the PLUS 1 so no too much idea what could be wrong int he firmware.

I have tried other advises posted in this fórum but so far no luck

I appreciate any feedback on this

Thanks

[Jakob]

Hi Pinias

Try setting PinConfig1 = 0.

It worked for me.

[pinias]

Jakob,

I have tried with piconfig1=0, but it does not work

my system is running at 24V. I have also tried the KKPG14708 for 5VDC sensor power supply but same thing it does not read any thing.

I split the output of the freq to rpm block into 4 U8 variables so that I can put the information in a CAN message (cause the output is U32)

I do check with the Canking in order to be sure the message is there and yes it is there but it always has 0 in the 4 arrays.

what pick up sensor have you used in your application?

I appreciate any advise

Thanks

[Jakob]

Ok.
I used the KPPG156, which is uses a 4.5 to 8.5 V supply, and connected it to one of the quad-count inputs.

Have you had an oscilloscope connected to the sensor output?
Because the controller should at least register something.

[oiltronic]

pinias: if you can, move your system very slowly to trigger the sensor then:

• Confirm the disconnected sensor output going with your voltmeter and/or oscilloscope.
• Confirm the connected sensor output on the MC050 input pin, again with the same voltmeter and/or oscilloscope.
• Use the Service Tool to monitor the pin and see if the input goes high & low as the tooth slowly passes in front of the sensor.
• Speed thing up a little bit and check the incrementing Count value.

What frequency range are you expecting?

[bgtwuk]

Hi Gents

I have used many sensors to monitor rpm or ground speed, with no issues.

However, I had one sensor sent me by a OEM with no specification available.

I put a very small electrolytic capacitor in series with it, omg that did it.  Been a year still working and allowing smooth shifting.

Bgtwuk

[pinias]

thaks all for the advices.

I found out that the pump did not come with the speed ring (lol  ).

so we decided not to use it...

thanks again