Zeror.ai Error Codes Siemens 120402

Siemens 120402

Brand: SiemensModel: Sinumerik 840D / 840D SL NC Sistem AlarmlarıError code: 120402

What the Fault Means

SINAMICS ilk devreye alma gerekli

Likely causes

  • Sürücü devreye alınmamış

Solution and Safe First Checks

  1. İlk devreye alma prosedürünü uygulayın

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

Related Siemens error codes

Source: the Zeror.ai industrial fault database and Siemens technical documentation. This page is for information; on critical systems follow the manufacturer's manual and authorised service.