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ErrorLib — Industrial Fault Code Library

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SVALM

Servo Amplifier Internal Alarm

Fanuc · R-30iB Mate + Mate Plus Robot

What does SVALM mean?

The SVALM (Red) LED lights when the servo amplifier detects an internal alarm. This fault is indicated if the LED lights up when there is no apparent alarm condition in the machine, or if it does not light up when there *is* an alarm condition. This suggests a malfunction in the servo amplifier's internal diagnostic system or its alarm logic.

Common Causes

  • Internal hardware fault within the servo amplifier module.
  • Over-temperature condition detected inside the amplifier.
  • Voltage or current anomaly detected by the amplifier's internal monitoring.
  • Firmware error or corruption in the amplifier's memory.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Replace the servo amplifier.

Browse all codes in this manual (53)
Verified technical data. Last updated: April 2026

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Source: Fanuc R-30iB Mate + Mate Plus Robot
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