LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm SRVO-018 — SERVO Brake abnormal

FANUC SRVO-018 (“SERVO Brake abnormal”): The brake current has exceeded the specification. First check: 1. Verify that the RM1 cable that carries the signal wires from the controller to the robot is securely connected and that the pins and cable are not damaged. Likely part: Servo amplifier (Servo amplifier).

Updated 2026-08-29 · LogrobotLM reference

Description

The brake current has exceeded the specification.

Remedy · Remède

1. Verify that the RM1 cable that carries the signal wires from the controller to the robot is securely connected and that the pins and cable are not damaged. 2. Check the brake cable 3. Replace the servo amplifier if it is not working.

Part to check / replace · Pièce à contrôler / remplacer

FANUC SRVO-018 points to the hardware below — start here before ordering. · SRVO-018 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-018 mean?
FANUC SRVO-018 (“SERVO Brake abnormal”): The brake current has exceeded the specification.
How do you troubleshoot FANUC alarm SRVO-018?
1. Verify that the RM1 cable that carries the signal wires from the controller to the robot is securely connected and that the pins and cable are not damaged. 2. Check the brake cable 3. Replace the servo amplifier if it is not working.
Which part is involved in FANUC SRVO-018?
SRVO-018 points to Servo amplifier (Servo amplifier). Confirm the real cause against the robot backup before replacing a part.

Related codes / Codes liés

SRVO-016SERVO Cooling water volume dropSRVO-017SERVO No robot internal mirrorSRVO-019SERVO SVON inputSRVO-020SERVO SRDY off (TP)

Same hardware involved / Même matériel en cause

SRVO-021Servo amplifierSRVO-022Servo amplifierSRVO-023Servo amplifierSRVO-024Servo 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 →