Oscillation fault

What does 101 mean?

Rapid stop initiated because the vibration sensor signals a fault. This indicates significant and potentially damaging oscillations in the drive system, which can lead to mechanical failure, premature wear, or unsafe operating conditions if not immediately resolved.

• Severe mechanical resonance within the system structure at critical operating speeds (e.g., 10-50 Hz range).
• Damaged or severely worn mechanical components (e.g., broken gear teeth, failed coupling elastomer).
• Incorrectly tuned drive control parameters (e.g., high gain P7-30 P-gain without sufficient damping P7-32).
• Encoder feedback issues leading to noisy or intermittent position signals, causing motor hunting (e.g., encoder counts fluctuating rapidly).
• Loosened or failed anti-vibration mounts or structural bracing, allowing uncontrolled movement.

Click steps to track your progress.

1. 1

   1. Isolate the source of oscillation by disengaging the mechanical load and operating the motor independently (if possible).

2. 2

   2. Inspect the motor coupling for damage, wear, or looseness; replace if necessary to ensure proper power transmission.

3. 3

   3. Verify mechanical integrity of the driven equipment for broken parts, excessive play, or loose connections (e.g., inspect gear teeth, shaft keys).

4. 4

   4. Reduce control loop gains (e.g., P7-30 P-gain, P7-31 I-gain) in small decrements (e.g., 10%) and retest for stability.

5. 5

   5. Measure motor shaft runout and concentricity to the coupling using a dial indicator (e.g., ensure <0.02 mm deviation).