ELSM^®

The ELSM^® control mode enables operation of permanent-field synchronous motors without an encoder.

Since no encoder system is used for motor control in ELSM^® control mode, control mode-specific restrictions arise compared to operation in CFC control mode with a motor encoder. Up to the transition speed, the ESLM^® control mode in open-loop operation only works in open-loop speed control. Above the transition speed, the ELSM^® control mode operates in closed-loop operation and is comparable to the CFC control mode with a resolver.