2 Troubleshooting Chapter D: Troubleshooting
86 Planmeca PlanMill 40 Technical manual
3. Check MILL VOLTAGES, 42V supply.
• Value must be 47.00 volts minimum.
• If the value shown is less than 47.00 volts, then the 48 volt power supply in the
lower portion of the mill E-box is suspect.
Check voltage
4. Assuming the I/O status and voltage supply are normal, navigate to: Technician
Console --> Motion.
5. Check home and end-limit sensor state for each axis.
6. Verify none of the 4 axes show the fault condition "Home-Limit" (highlighted in red).
See example below. This fault occurs when both the home sensor and the end-limit
sensor on the same axis are "Closed" at the same time. This means there is a
physical obstruction in both sensors, or one obstructed sensor and one defective
sensor/cable, or 2 defective sensors/cables. Although rare, a defective CPU module
can cause this as well.
Figure 67: Home & limit sensor astatus check