Our XYZ motors and spindle are not responding to any inputs from PathPilot. No fuses blown, no error codes, and all green lights on the Leadshine. We attached a meter to the a- and a+ outputs for the X axis and there was no voltage when attempting to jog the X. Any other ideas before we buy a new MX3660?
Thanks!
Christopher,
Welcome to the forums!
Are your DRO’s moving when you command movement?
If so, it certainly sounds like a drive failure. You can also confirm that 24 and 48v are present at the driver. (330-332 for 24v and 200-201 for the 48v)
That is correct. The DROs change as expected when jogging or attempting to reference, but no movement on XYZ. Also, no rotation on the spindle, when commanded. Wires 330/332 are showing 23.66 volts and wires 200/201 are at 47.5 volts.
I faced the similar issue , after replaced the MX 3660 Lumishine , Our CNC machine works fine .
Is it possible to repair MX 3660 ? currently we have 2 defectives…
If you have 2 faulty 3660s, then it’s frequently possible to get one good one from the parts. If you’re confident with electrical parts, then try the following at your own risk!
When you open up the case, you’ll find the stepper drivers are 3 individual boards screwed onto the base of the case. Then a single larger board plugs onto the top of the drivers and it provides the digital input and output connectors. That board is held in place on top of the drivers by friction and a couple of screws.
The failure seems to be always in one or other of the stepper driver sub boards, but that failure causes everything else to shut down. If you remove them one at a time, put the main board back on and try the result in the machine, you should be able to identify the failed driver. 3 good drivers added to one of the main boards should give you a good MX3660.
As I said above, this is entirely at your own risk and you shouldn’t attempt it unless you’re used to working with electronics. It’s worked for me a couple of times to get things running again.
1 Like