OH3

Motor overtemperature (+150°C)

Lenze · SM29_05 Service Bulletin

What does OH3 mean?

The motor temperature, detected via resolver or incremental encoder, has exceeded +150°C. This signifies severe thermal overload due to impermissible continuous current or frequent/prolonged acceleration processes. A missing PTC/temperature contact can also prevent proper monitoring.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Switch off monitoring by setting C0583 = 3.

Source: Lenze SM29_05 Service Bulletin
Open Manual (Page 327)