18-128
Guard Motion safety function fault
Allen-Bradley · Logix 5000
What does 18-128 mean?
A fault specific to the Guard Motion safety function has occurred. This fault is only applicable when using a drive with Guard Safety functionality and indicates a safety integrity issue.
Common Causes
- A fault specific to the Guard Motion safety function has occurred
- Fault is applicable only when use a drive with Guard Safety functionality
Repair Steps & Checklist
Click steps to track your progress.
- 1
See the Guard Motion attributes and Guard Status bits to determine the cause of the fault to determine corrective action.
Verified technical data. Last updated: March 2026
Related Faults
Source: Logix 5000