Sinumerik Alarm 310609 Axis %1 drive %2 encoder cut-off frequency exceeded

Sinumerik Alarm 310609 Axis %1 drive %2 encoder cut-off frequency exceeded

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

Definitions:
Actual velocity value exceeds encoder limit frequency fg,max = 650kHz

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:
• The wrong encoder may be in use.
• Does the number of encoder lines match the setting in MD 5005: ENC_RESOL_MOTOR (encoder resolution for motor measuring system)?
• Is the encoder cable connected correctly?
• Is the encoder cable shield installed flat?
• Replace the encoder.
• Replace the 611D hydraulic module.
• Modify MD 5605: SPEEDCTRL_LIMIT_TIME and MD 5606: SPEEDCTRL_LIMIT_THRESHOLD in accordance with the mechanical and dynamic features of the axis.

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