ABB Error 50056 — Joint collision detected
ErrorABB 50056 (“Joint collision detected”): The motion supervision detected a torque anomaly consistent with a collision or jam on an axis. Likely part: Axis torque / brake / mechanics / drive.
Updated 2026-09-17 · LogrobotLM reference
What it means
The motion supervision detected a torque anomaly consistent with a collision or jam on an axis. The robot stopped and typically backed off.
What to check
- Inspect the cell at the stop position — clamp, part or hose in the path is the usual cause.
- If no obstacle: check payload data (wrong load = false collisions) and mechanical friction of the axis.
- Repeated on the same axis with no obstacle: measure friction/backlash — mechanics may be degrading.
Part to check / replace
ABB 50056 points to the hardware below — start here before ordering.
Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.
Related codes
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →