Centroid Community CNC Support Forum

The shaft is .625 and I now I think I cannot use either?? Is that the drive shaft, or the back shaft? For NEMA42 servo motors, the drive shaft (front) is always 5/8". The back shaft, where the encoder mounts, is usually reduced. Typical dimensions are 1/4", 3/8", or 6mm. You can prob...

Yes, you should always install appropriately-rated overload protection for motor loads. This is best done with a 3-pole contactor and overload assembly. If your overload unit has "single phase sensitivity", meaning that it will trip in the event that one (or two) of the three phases is not...

Someone from Ajax needs to post a copy of the CNC10 PLC programming manual. The CNC10 (XPLC) PLC programming manual explains the format of a PLC program; how to identify your source files; why there are two programs and what each one does; how custom M functions work; how to compile and install chan...

What do your cnc10.m10 and cnc10.m11 files contain?

The other half of your PLC program -- probably contained in a file named dm45dc3p.src, compiled with xplccomp, and executed by the PC-based interpreter -- needs to control OUT30 based on the M10 request. Typically that is done with a line similar to this: IF M10 XOR ReverseClamp THEN (Clamp) The com...

When you say you want to use the Teco inverter as a phase converter, many would assume you mean to connect the 3-phase output of the inverter to the control's incoming power terminals; have it run all the time at 60Hz; and still use contactors to turn the spindle motor on and off. If that is what yo...

... and if you want to home the Y axis minus instead of plus, then use: M91/Y in your cncm.hom file. If you run M91/Y, but the Y axis immediately moves plus (and eventually stops on the plus limit switch with a "Y+ limit tripped" error), then your Y- home switch is stuck open or has a loos...

The PLC program source file is usually stored in the control software directory. Supposing you have a mill control, that is the c:\cncm directory. Supposing you are using an All-in-one DC control unit, with a typical software installation, then your original PLC program source file would be named al...

I would put the OUT9 definition in the "Output Definitions" section, usually around line 200 of the source file.

You need to add code to your PLC program to do that. For example, supposing you wanted to use the OUT9 relay for the vacuum, and you wanted to turn it on and off with the Aux9 key: ; in definitions section: VacuumOut IS OUT9 ; dust vacuum ;... ; in MainStage: IF Aux9Key THEN (Aux9PD) ; detect rising...