Code SP9047: SSPA:47 ILLEGAL SIGNAL OF POSITION CODER
Issue Description & Safety Warning
The Fanuc 0i-D / 0i Mate-D Alarm List has triggered a critical SSPA:47 ILLEGAL SIGNAL OF POSITION CODER alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Section: Serial spindle alarm list 47 1 Replace the cable. The A/B phase signal of the spindle 2 Correct the cable layout position coder (connector JYA3) is (vicinity of the power line). abnormal. The relationship between the A/B phase and 1-rotation signal is incorrect (Pulse in terval mismatch).
Source: Fanuc B-64305EN/03 Appendix A Alarm List
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Fanuc 0i-D / 0i Mate-D Alarm List Alarms
Fanuc controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code SP9047 on the 0i-D / 0i Mate-D Alarm List identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Fanuc's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 769 Fanuc 0i-D / 0i Mate-D Alarm List codes.
Have a better solution?
Help the industrial community by sharing your repair experience for code SP9047.
Need a searchable reference for more Fanuc 0i-D / 0i Mate-D Alarm List manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026