Schneider Electric SOF

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

What the Fault Means

Speed Feedback Loss (encoder)

Likely causes

  • HTL/TTL encoder cable broken; encoder supply fault; wrong encoder type

Solution and Safe First Checks

  1. Check encoder cable and supply; verify encoder type settings; replace encoder

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 SOF · Zeror.ai