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-022 — SERVO SRDY on (Group:%d Axis:%d)

FANUC SRVO-022 (“SERVO SRDY on (Group:%d Axis:%d)”): SRDY was already on when an attempt was made to turn on the MCC with HRDY. First check: WARNING: Before you continue to the next step, perform a complete controller backup to save all of your programs and settings from memory for this robot. Likely part: Servo amplifier (Servo amplifier) +2 more.

Updated 2026-08-29 · LogrobotLM reference

Description

SRDY was already on when an attempt was made to turn on the MCC with HRDY. HRDY is the signal sent from the host to the servo system to specify whether to turn the servo amplifier's MCC on or off. SRDY is the signal sent from the servo system to the host to indicate whether a servo amplifier's MCC is on or off.

Remedy · Remède

WARNING: Before you continue to the next step, perform a complete controller backup to save all of your programs and settings from memory for this robot. After you complete the next step, restore the saved data to the new Main CPU board if memory has been lost. Otherwise, you could injure personnel, damage equipment, or lose data. 1. Verify that the battery is connected to the Main CPU board before removing the Main CPU board. Replace the axis control card on the Main CPU board. 2. Replace the servo amplifier. 3. If this does not clear the alarm, verify that all connectors are securely connected.

Part to check / replace · Pièce à contrôler / remplacer

FANUC SRVO-022 points to the hardware below — start here before ordering. · SRVO-022 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-022 mean?
FANUC SRVO-022 (“SERVO SRDY on (Group:%d Axis:%d)”): SRDY was already on when an attempt was made to turn on the MCC with HRDY. HRDY is the signal sent from the host to the servo system to specify whether to turn the servo amplifier's MCC on or off. SRDY is the signal sent from the servo system to the host to…
How do you troubleshoot FANUC alarm SRVO-022?
WARNING: Before you continue to the next step, perform a complete controller backup to save all of your programs and settings from memory for this robot. After you complete the next step, restore the saved data to the new Main CPU board if memory has been lost. Otherwise, you could injure personnel, damage equipment,…
Which part is involved in FANUC SRVO-022?
SRVO-022 points to Servo amplifier (Servo amplifier), Axis control card (Axis control card), Main board (Main CPU board). Confirm the real cause against the robot backup before replacing a part.

Related codes / Codes liés

SRVO-020SERVO SRDY off (TP)SRVO-021SERVO SRDY off (Group:%d Axis:%d)SRVO-023SERVO Stop error excess(G:%d A:%d)SRVO-024SERVO Move error excess(G:%d A:%d)

Same hardware involved / Même matériel en cause

SRVO-054Axis control cardFRCE-161Main boardFRCE-215Main boardSRVO-001Main board

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 →