Axis %1 drive %2 encoder cut-off frequency exceeded


%1 = NC axis number

%2 = Drive number



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

-    Mode group not ready.

-    The NC switches to follow-up mode.

-    Channel not ready.

-    NC Start disable in this channel.


-    Interface signals are set.

-    Alarm display.

-    NC Stop on alarm.

-    Channel not ready.

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.

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