ABB Error 39468 — Drive Unit Temperature Alarm

What it means · Ce que ça veut dire

Drive Unit Temperature Alarm — ABB robot hardware event on the Drive Unit Temperature Alarm (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

The temperature has risen above the alarm level in drive unit number arg, drive module arg, which is the second abnormal level of three. No operation will be possible until after correcting the fault. The system goes to status SYS HALT. Le texte constructeur de ce code n'existe qu'en anglais dans les manuels ABB dont il provient. Il est reproduit tel quel ci-dessus ; le manuel de votre robot fait foi.

What to check · Que vérifier

• Inspect the Drive Unit Temperature Alarm, its wiring and connections first.
• Match this code against your robot's event-log timeline before swapping parts.
• Follow the French field checks below — they are the tested sequence for this fault.
• probable : The ambient temperature may be too high, the cooling fans may have failed or the user program may consume more current than the drive system can supply.
• - 1) Check that the fans are running and that the air flow is not obstructed.
• - 2) Check that the ambient temperature does not exceed the cabinet rating.
• - 3) If the system contains external axes then check that motors are not too large for the drive units.
• - 4) If possible, rewrite the user program to reduce the amount of hard acceleration.

Frequently asked · Questions fréquentes

What does ABB error 39468 mean?

ABB 39468 (“Drive Unit Temperature Alarm”): Drive Unit Temperature Alarm — ABB robot hardware event on the Drive Unit Temperature Alarm (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

How do you troubleshoot ABB error 39468?

Inspect the Drive Unit Temperature Alarm, its wiring and connections first. Match this code against your robot's event-log timeline before swapping parts. Follow the French field checks below — they are the tested sequence for this fault.

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