Loss of communication Error

Hi,
I am having an issue where the SM74 is showing a loss of communication error. The press contines to run however there is a loss of control.

Has anyone come across this issue?

 

Hi
can you explain what is exactly the problem?

 

The user interface can not be used and the cp2000 loses connection with the press.

 

Hi:
Use the Schematic diagrams for Cp2000
The first thing : 1) Check the Fuses: F1+f2+F3 15Amp, fast- blowing for Open in the
Module GRM5Vdc Rectifier Module., they are input for 24Vac , and the Output is +34Vdc.
2) Check the GRM24Vdc Module : Test the Fuses F1+f2= 16Amps- Fast-blowing for open in , the input is a) 26Vac, and output=37Vdc b) 37Vac and output = 52Vdc
3) Check the GRM 120Vdc test fuse: f1+f2 for open use the Schematic Diagrams the output= + 127Vdc
4) See if the input of machine: has a 10% of fluctuation voltage??? Very important, otherwise , there are a Great possibility the control board RSK120-2 Will be activate with a great fluctuation is coming.

 

Thanks.... I will get the technician to look into the above

 

ok thank you