How to test this....

[Dave177]

Hi all, its a bit of a long shot but I cant get hold of the dealer and trying to get this sorted over the weekend.
The below part is off of our timber harvester it basically measures the lengths of timber being cut- yesterday it stopped working and I would like to test this unit, if possible before I start ordering parts.
As far as I can tell it is similar to a speedo and its requires 24v supply and I assume then outputs a voltage to the computer. My question is will I pick up the output voltage with a normal multimeter or will the voltage/frequency be too small?

Thanks in advance

 

[Engcon UK]

My immediate reaction would be 'try it' but the answer is I doubt it.

Not the same thing, but our CANBUS systems read outputs from sensors typically in digital pulse form, which you won't read on a multimeter. I'm guessing that this might be similar to the rotation sensor we use for GPS purposes: it counts the number of rotations (or parts of a full rotation) by counting the digital pulses through the CAN and that's sent off somewhere else (technical term there) which then either gives a readout or tells something to stop. In short, it may be the sensor, but I doubt you will be able to prove it with a level of certainty that would warrant ordering a new part - unless they did sale or return, that is.

HTH

 

[Dave177]

Thanks for the reply, spoke to the dealer this afternoon, can be tested with a meter- unfortunatly this little unit is broken. Attached a few more images of the encoder unit removed. It looks like the small nut that holds the cable in place had brok3n at some point and a piece of it had shorted out something on the circuit board

 

[Monkeybusiness]

Before you chuck that in the bin send a pic and a description of it to [email protected] - they repair printed circuit boards and have sorted a couple of chipper stress control boxes out for me in the past. They might not be able to do anything but it’s worth an ask!...

 

[Dave177]

Cheers, have spoken to another company that might be able to repair it too but will try your guys as well.
Thanks

 

[Charlie]

Google encoders UK and it brings up a few UK suppliers. Think it was www.encoders.co.uk I got my last one from for a flow wrapper. They’ll be half the price than a “spare part” even so it’ll still be a few hundred quid, just let them know the details on the side.