help with problem please

[martin54]

Sorry about the late reply, the guy is going to sort out all the details, not sure if things have got better or worse lol, have now got the machine moving on all 3 axis but for no apparent reason on 2 of the axis after a couple of minutes or so the motors stop moving. The DRO's are still moving in mach3 if you jog about but the motors don't move. Have to turn the power off & back on to get them moving again, same 2 axis all the time, "Y" axis & "Z" axis.

[JAZZCNC]

Sorry about the late reply, the guy is going to sort out all the details, not sure if things have got better or worse lol, have now got the machine moving on all 3 axis but for no apparent reason on 2 of the axis after a couple of minutes or so the motors stop moving. The DRO's are still moving in mach3 if you jog about but the motors don't move. Have to turn the power off & back on to get them moving again, same 2 axis all the time, "Y" axis & "Z" axis.

Well if you haven't all ready start by pulling on all wire connections to check there are no lose wires.

[martin54]

no loose wires Jazz, it's the same 2 axis all the time, machine jogs about great when first started then you go to jog either the y or z axis & the motors don't turn but the dro on mach3 is moving

[JAZZCNC]

no loose wires Jazz, it's the same 2 axis all the time, machine jogs about great when first started then you go to jog either the y or z axis & the motors don't turn but the dro on mach3 is moving

Try swapping X axis drive with Y axis or Z axis and see if it moves. This will confirm or eliminate the drive from picture.

[JAZZCNC]

As it got a shity cheap chinese BOB.?

[martin54]

As it got a shity cheap chinese BOB.?

Yer & cheap Chinese drivers as well, he bought 3 drivers & a bob, wired it all up & the x axis driver blew up, seller told him to try again & he blew up another driver lol, was asked for pictures to ensure all was wired correctly & after sending the pictures was sent a complete new set of drivers & bob, still no joy so seller sent another bob

[JAZZCNC]

Yer & cheap Chinese drivers as well, he bought 3 drivers & a bob, wired it all up & the x axis driver blew up, seller told him to try again & he blew up another driver lol, was asked for pictures to ensure all was wired correctly & after sending the pictures was sent a complete new set of drivers & bob, still no joy so seller sent another bob

Ok Well sounds like he needs to take the Hint and buy some decent gear.! . . . . . Bet there the TB based drives as well.?

That said Because 2 drives are going off at same time I'd be inclind to think it's the BOB not the drives but swapping the good working axis drive will show up if it's the drive or BOB.?

Not something I'd recommend unless the person is confident with electrics is to by pass the BOB all together and wire direct from the PP pins but this is a risky move and could blow the PP if not done correctly. So only for the competent hacker really.!