Hello there,

                        I have sinumerik CNC With 802D SL. Many times during machine runs one common error we are facing which is 207841 ' AXIS X1 Drive 1 drive: Infeed operation withdrawn' and emergency stop.  At the same time in SLM Module Ready Signal becomes Red from green where as all other including of double motor module remains ok and with green Ready LED. As a primary correction we have replaced its SLM Module with same capacity and same parameter. But still we are facing this issue. Because after replacement of SLM Module 1 time this error observed and after reset of error machine run ok from more than 2 hours. The time gap between two alarm is not fixed. Some times comes frequently also. FYI Please, i have attached images of error display. Details of SLM Module : 1) Input 3AC 380-480V 50/60 Hz. 2) Output : DC 600V 17A 10KW. 1P 6SL3130-6AE21-0AB0. Vesion B. Awaiting for your reply how to resolve this issue.

Regards,

Pranjal Gajjar

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Split from "Infeed Operation is withdrawn" error in 802D sl .

1) SLM Signal is via PLC

2) Mentioned connections checked which found ok. 

One more thing i want to add sir, If i am reducing feed rate of X axis to zero during jog mode for tool setting, this error generates most of the time. Not all time. So we cant say present of power fluctuation. Also if i am reducing the feed two more error also presents. 1) OFF 1/0FF 3 Missing with emergency and 2)16913 - Mode group 1 channel 1mode change:action 5 <ALNX> notallowed. So the main issue is when i am reducing feed from certain value to zero, Any of 3 error raises. 3rd  is Axis X1 Drive1 Drive: Infeed operation withdrawn. 3rd error also generates sometimes when only panel emergency is pressed. Please provide solution.