Sinumerik Alarm 300609 Axis %1 drive %2 encoder cut-off frequency exceeded

Sinumerik Alarm 300609 Axis %1 drive %2 encoder cut-off frequency exceeded

Parameters:
%1 = NC axis number
%2 = Drive number

Definitions:
Actual speed value exceeds encoder limit frequency fg,max = 650kHz; fg = nist * MD 1005

Reactions:
– Mode group not ready.
– Channel not ready.
– Channel not ready.
– NC Start disable in this channel.
– NC Stop on alarm.
– The NC switches to follow-up mode.
– Alarm display.
– Interface signals are set.

Remedy:
Please inform the authorized personnel/service department.
• The wrong encoder may be in use.
• Correct MD 1005: Does the number of encoder lines match the setting in MD 1005 $MD_ENC_RESOL_MOTOR (encoder resolution for motor measuring system)?
• Is the motor encoder cable connected correctly?
• Is the motor encoder cable shield installed flat?
• Replace the motor (the encoder is defective).
• Check the encoder, encoder cable and shield connection for loose contact or cable breakage.
• Replace the encoder.
• Replace the 611D control module.

Program Continuation:
Clear alarm with the RESET key in all channels of this mode group. Restart part program.