Schneider Electric **F021**

Brand: Schneider ElectricModel: PLC (Modicon M221 / M241 / M262)Error code: **F021**

What the Fault Means

STO Input Discrepancy

Likely causes

  • İki STO girişi arasında tutarsızlık (çift kanal)

Solution and Safe First Checks

  1. STO kablolama şemasını ve güvenlik modülü çıkışlarını doğrulayın

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

Related Schneider Electric error codes

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

Schneider Electric **F021** · Zeror.ai