Fanuc alarm SV0440
βi SVU/SVM · Fanuc βi SVU/SVM
What it means
Converter: excessive deceleration power (abnormal regenerative discharge amount).
Likely causes
- Insufficient regen resistance for applied deceleration duty
- Regenerative processing circuit failure
- Repeated high-inertia rapid stops
Triage note: αi equivalent: PSMR 08 / H. Lengthen deceleration times before hardware changes.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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βi regenerative resistor unit (upsized if duty demands)
Regenerative Resistor Unit · Common cause
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A06B-6130-H2xx
βi Servo Amplifier Unit SVU · Check if others ruled out
Need the part urgently?
Send us alarm SV0440 with your machine details — typical RFQ turnaround is 24–48h.