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question

When your production line goes down at 2 AM and the servo drive shows 'ALM 31' error, what's your emergency troubleshooting sequence to get back online in under 30 minutes?

AbigailLewis

AbigailLewis

2025-11-26

answer

Oh man, that 2 AM ALM 31 error is a real production killer! Here's my emergency sequence to get you back online fast:

1. **Power cycle immediately** - Turn off the main power, wait 30 seconds, then restart. Sometimes it's just a glitch.

2. **Check for mechanical binding** - Manually rotate the motor shaft. If it's stuck, you've got a mechanical issue causing overspeed.

3. **Inspect wiring connections** - Look for loose encoder cables or damaged motor wiring that could cause false speed readings.

4. **Verify parameter settings** - Check if speed limits or gain settings were accidentally changed. Reset to factory defaults if needed.

5. **Test with reduced speed** - If it runs at lower speeds, you've got a tuning or mechanical load issue.

6. **Swap components** - If you have spares, try a different motor or drive to isolate the problem.

ALM 31 typically means overspeed detection, so focus on mechanical freedom and proper parameter settings first. Most times it's a simple fix - you should be back up in 15-20 minutes!

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