Micro-Stops: The Silent Killer of Your Productivity

The Invisible Enemy of Productivity #

A 2-hour stop is impossible to ignore. Everyone notices it; it gets documented, investigated and presented at the production meeting.

But 240 stops of 30 seconds each... nobody sees them. And they add up to exactly the same thing: 2 hours lost.

That's the difference between availability (which everyone measures) and performance (which almost nobody measures well).

What Counts as a Micro-Stop? #

Any interruption of less than 5 minutes that typically is NOT logged in the system:

• Material jam at the infeed (30 sec)
• Clearing product at the discharge (45 sec)
• Sensor or parameter adjustment (1 min)
• Waiting for an empty pallet (1-2 min)
• Cleaning up a minor spill (2 min)
• Label roll change (2-3 min)
• Operator briefly away (1 min)
• Restart after a sensor jam (20 sec)

The Real Impact in Numbers #

Reference values for manufacturing lines (indicative):

Metric	Without monitoring	With real monitoring
Reported performance	92%	74%
Micro-stops detected	5-10/shift	60-120/shift
Time lost	"Not significant"	45-90 min/shift

If your shift is 8 hours long and you lose 90 minutes to micro-stops, that's 19% of your productive time evaporating without anyone seeing it.

How to Detect Micro-Stops #

Method 1: Automatic Monitoring (Recommended)

Sensors connected to the machine that detect every time it stops, even for 5 seconds.

• Sensor on the main motor shaft
• Timestamped part counter
• Digital signal from the PLC

A well-configured MES captures all of it automatically and generates Pareto reports of micro-stops.

Method 2: Manual Time Study

If you don't have sensors, you can run a manual study:

1. Assign 1 person to watch the line for 2-4 hours
2. With a stopwatch, log EVERY time the machine stops
3. Record: time, duration, apparent cause
4. At the end, add up the times and categorize the causes

6 Strategies to Eliminate Micro-Stops #

1. TPM (Total Productive Maintenance)

Operators perform basic cleaning, lubrication and inspection at the start of every shift. Many micro-stops come from built-up dirt or lack of lubrication.

2. 5S at the Workstation

Everything in its place: adjustment tools, cleaning supplies, common spare parts. Less time searching = fewer micro-stops from waiting.

3. Poka-Yoke (Error-Proofing)

If a product always jams at the same point, why not redesign that guide? Eliminate the root cause, not just the symptom.

4. Focused Preventive Maintenance

Identify which components cause the most jams and schedule their replacement BEFORE they fail.

5. Operator Training

Many micro-stops happen because the operator doesn't know the optimal setting. Train on best practices.

6. Sensor and Parameter Tuning

Oversensitive sensors trigger false alarms. Set the thresholds correctly.

Illustrative Example: A Filling Line #

The "reported" performance had been a fantasy. Only by measuring reality could it be improved.