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16-05-2014 #2
No don't need spindle board just use either a spare output to control relay or use relay built into BOB if it as one. Then set Mach3 output# to correct pins on BOb and then set up in Mach spindle control to use that output# for controling On(m3)/OFF(m5)
To wire it just take wire from P24 (24v) on Vfd and pass it thru the relay contacts and back to Input #1 on vfd for forward. I wouldn't connect the reverse but if you do need or want it just do the same and connect to input #2 on vfd.
Edit: oh and you'll need to go into VFD parameters and setup so uses external control for Run/Stop.
Edit2: Just noticed you mention Modbus so scrap all of the above.!!. . . . . If you have on/off and spindle speed control working already then all you need to do is send the drive a signal to emergency stop if there's a problem.
To do this just program one of the inputs to code 64 via it's parameter on VFD and send it the same P24 thru the relay to input you choose. This will mean when the relay changes state IE: machine E-stop the VFD will go into E-stop.Last edited by JAZZCNC; 16-05-2014 at 02:06 PM.
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