Schneider Electric tnF

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

What the Fault Means

Autotuning Fault

Likely causes

  • Motor not connected; motor too small; mains failure during tuning

Solution and Safe First Checks

  1. Ensure motor is connected and free; re-run autotuning (tUn=yES); check motor data

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 tnF · Zeror.ai