Chapter 10
208
UM10350_PCNC770_Manual_0916A
Troubleshooting
Contents of Spindle Drive Subsystem Problem Resolution Checklist
Table 5.1 Spindle will not turn on in manual or auto
Table 5.2a Run and direction commands to drive
Table 5.2b Main control board LED indicators for run and speed commands to drive
Table 5.3 Spindle VFD Trip Codes
Spindle Drive Subsystem Checklist
Table 5.1
Spindle will not turn on in manual or auto
Possible Cause Probability Action to Identify Cause of Problem Discussion
No power to spindle Medium Inspect spindle belt
If the display on the VFD is
on, the belt may be loose or
broken.
No power to VFD —
The VFD has power if the digital display
lights up.
When power is removed, the
VFD display will remain active
until the internal capacitors
dissipate their energy, usually
about 15 seconds or so.
(connued on next page...)
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