LogrobotLM

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FANUC Alarm SRVO-147 — SERVO LVAL(DCLK) alarm (G:%d A:%d)

FANUC SRVO-147 (“SERVO LVAL(DCLK) alarm (G:%d A:%d)”): This alarm indicates a problem with the back-up charge circuit for the amplifier. First check: 1. Check the cable between the servo amplifier (CN1) and the MCC. Likely part: Servo amplifier (Servo amplifier).

Updated 2026-08-29 · LogrobotLM reference

Description

This alarm indicates a problem with the back-up charge circuit for the amplifier.

Remedy · Remède

1. Check the cable between the servo amplifier (CN1) and the MCC. Replace it if necessary. 2. For a model using the B cabinet, check whether the transformer fuses (F1 and F3) have blown. 3. Replace the printed circuit board for emergency stop control. 4. Replace the servo amplifier.

Part to check / replace · Pièce à contrôler / remplacer

FANUC SRVO-147 points to the hardware below — start here before ordering. · SRVO-147 met en cause l'organe ci-dessous : commencez par là.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering. · Touchez une pièce pour tous les codes qui la citent ; vérifiez la variante exacte avant commande.

Frequently asked · Questions fréquentes

What does FANUC alarm SRVO-147 mean?
FANUC SRVO-147 (“SERVO LVAL(DCLK) alarm (G:%d A:%d)”): This alarm indicates a problem with the back-up charge circuit for the amplifier.
How do you troubleshoot FANUC alarm SRVO-147?
1. Check the cable between the servo amplifier (CN1) and the MCC. Replace it if necessary. 2. For a model using the B cabinet, check whether the transformer fuses (F1 and F3) have blown. 3. Replace the printed circuit board for emergency stop control. 4. Replace the servo amplifier.
Which part is involved in FANUC SRVO-147?
SRVO-147 points to Servo amplifier (Servo amplifier). Confirm the real cause against the robot backup before replacing a part.

Related codes / Codes liés

SRVO-145SERVO LVAL(CNV-DC) alarm(G:%d A:%d)SRVO-146SERVO LVAL(INV-DC) alarm(G:%d A:%d)SRVO-148SERVO HCAL(CNV) alarm (G:%d A:%d)SRVO-149SERVO HCAL(INV) alarm (G:%d A:%d)

Same hardware involved / Même matériel en cause

SRVO-018Servo amplifierSRVO-021Servo amplifierSRVO-022Servo amplifierSRVO-023Servo amplifier

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →