Preparing the published article.
Lockout/Tagout for Robot Cells
Maintenance is the highest-risk phase.
Steps
- Stop and confirm all motion has ceased.
- Isolate electrical, pneumatic, hydraulic and stored energy.
- Lock and tag; one person, one lock.
- Release residual energy and support gravity-loaded axes.
- Verify isolation by attempting a start.
- Restore in reverse order and confirm the area is clear.
Weak points seen in practice
| Weakness | Improvement |
|---|---|
| One lock for several people | Individual locks plus a lock box |
| Air not released | Add isolation valve and bleed point |
| No support for heavy axes | Mechanical support or verified brake |