Support

Problem:

During production, the error message “over temperature upper current conductor” appears. This means that the cooling is no longer sufficient to keep the upper current conductor constantly below 40 degrees Celsius.

Possible Causes & Resolutions:

If the cooling unit is working properly (temperature and pressure is OK) and no flow switches are giving an error, then contamination is most likely the cause of the problem.

Clean the cooling circuit, especially the cold-water circuit in this case, including the cooling unit. Check the water level in the cooling unit and top up if necessary and replace lubricant (if PowerROLL – coolant or DISCON is used) and clean the cooling system as recommended every 6 months.

Cooling emulsion exchange and cleaning

Problem:

Machine stops and message „Pacemaker: Profibus communication error“ is displayed.

Possible Causes & Resolutions:

• Cooling water valve: Wrong type of valve or plug without protective circuit (suppressor). The voltage peaks can cause interferences in the Pacemaker electronics. Always use the original plug and valve type.
• Profibus plug: On the plug of first and last client of profibus system the termination resistant must be set to ON. Otherwise interference may occur.
• Profibus cables: Check the position of the cables in the control unit. If they are close to contactors, high voltage peaks can create interferences.

Click here for the status LED’s of the Beckhoff PC and how to access the PC in case of a trouble shooting.

• If the Led are not switching off after machine power off (wait at least 5min. !), remove the X101 plug on the IPC and plug it back after some seconds.