Seeking clarification on the SFD in AKM Brushless Servo Drives

Dear members,

I'm looking for clarification on the smart feedback device (SFD) installed in the series of servomotors AKM. There is little information available on this subject in the specifications. It appeared that it offers a very high resolution, information on the position of the rotor high precision signals.

1. how exactly is the PCG provides the position of the rotor?

2. is there a provision to contract low resolution effect Hall of EPD type feedback?

Thank you.

Ansari07

Hi Ansari07,

I don't think that this level of control is possible with the AKD. The reader is supposed to close its own current loop on board for the control of switching and outputs of phase. The AKD offer couple, speed or modes of control position, and you can talk to it by Ethernet on the service port, via a field such as EtherCAT or CANOpen bus, or with an analogue signal +-10V or step/dir commands.

I don't think you can get around all of the internal firmware in the AKD and get direct control of how current passes through the phases.

Best regards

Nate

Tags: NI Hardware

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