Okuma Alarm P-0739 – MCS DD Encoder (Slave Sensor) Initialization Failure

This alarm indicates that an error occurred during the initialization process of the MCS direct drive (DD) encoder (slave sensor). The control system was unable to properly recognize or establish communication with the slave encoder during startup.

Possible causes include:

• Encoder communication failure

• Damaged or disconnected encoder cable

• Power supply issue to the encoder

• Faulty DD encoder unit

• Control or parameter mismatch

Check encoder wiring, power supply voltage, and related parameters. Restart the control after inspection. If the alarm persists, the encoder or associated drive system may require professional diagnosis.