Code ISD-054: Excessive error during move (IPS%d)
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical Excessive error during move (IPS%d) 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
Cause: A sudden change in load or poor servo tuning caused an excessive error in the pneumatic servo position. This alarm is posted when the positional error (in mm.) of that axis exceeds $IPS_CONFIG[n].$POSERR_MAX2, where n is the number specified in the alarm. Remedy: Press RESET to continue the operation. Verify that adequate air supply is available. See if the air pressure dips considerably during meter operation. This indicates that the air cylinder is starved for air.
Source: FANUC Robot R-30iA Alarm Code List Operator's Manual
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Fanuc R-30i Series Robot Controller Alarms
Fanuc controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code ISD-054 on the R-30i Series Robot Controller 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: 6553 Fanuc R-30i Series Robot Controller codes.
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