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Your machine axes require power and control signals to work. If either of those are disrupted you can lose any or all of your axes motion. If only one motor is not working go to, One Axis Won't Move (or Only Moves in One Direction), and Other Axes Move - PCNC 1100.
Tools
Digital Multimeter
Metric Allen Keys
Small Flat Blade Screw Driver
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Inspect the stepper driver controller lights.
Some controller lights are on: One Axis Won't Move (or Only Moves in One Direction), and Other Axes Move - PCNC 1100.
All the controller lights are off: Continue to the next step.
Power off the machine.
Examine the data cable at the machine control board and the axes drivers.
Machine control board: J6 (26 pin IDC ribbon cable)
Stepper driver controllers: 10 pin IDC (ribbon cable)
J6-1 - J6-6 (X-axis)
J6-7 - J6-12(Y-axis)
J6-13 - J6-18 (Z-axis)
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Inspect the DC-BUS for power by determining if the green power light is illuminated.
If it does: The motors or stepper driver controllers will be illuminated, if the DC Bus Axis Fuses are not blown. To learn how to check individual fuses, see: https://tormach.atlassian.net/wiki/spaces/PCNC1100/pages/4176445524/One+Axis+Won+t+Move+or+Only+Moves+in+One+Direction+and+Other+Axes+Move#InspectMove+-+PCNC+1100#Inspect-the-DC-Power-Supply
If it doesn’t: Continue to the next step.
Power off the machine.
Measure the resistance across the F6 fuse with digital multimeter set to resistance.
Replace the fuse if the digital multimeter reads OL, shows a resistance in the MΩ, and/or doesn’t produce continuity tone.
If the fuse measures 0-5 Ω, reinstall it into the DC-BUS.
Power on the machine and measure the Vac entering the DC-BUS on:
L25
L15
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Power off the machine.
Remove L25 and L15 from the transformer.
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Power the machine back on.
Take an AC reading between the terminals L25 and L15 were on.
If you do not see 48 Vac, continue to the next troubleshooting step.
Check the C1 Contactor
Reason: The C1 is defective.
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