The CNC has told the FANUC servo drive to make a move, the servo drive moves the motor, which in turn moves the encoder. Generally, an Excess Error means that the machine has moved beyond its allowable tolerance. What is an Excess Error Alarm and why is it caused? This can be caused by the motor encoder itself, the cable going to the encoder, or the axis control card the cable is plugged into. These boards or your machine will need to be sent in for repair.Īn Axis Communications Error indicates a communications problem between the motor encoder and the CNC control. If the machine continues to flash “READ” (or “LSK” on modern controls) but never receives the file, you have a defective communications port on either the memory board or the master board.
Next, transmit your file into the machine tool. Next, set your machine up to receive a file. To test whether the cable or the port has failed, take a known good cable and insert it into the RS-232 port.
Otherwise when you attempt to read-in or punch-out a cable, you will get an 086 alarm that is going to indicate that the cable is incorrect, or that the port has failed. Ensure that you are using a cable that is known to be functional when communicating. However, the RS-232 cable is also another high-fail item. The RS-323 port is a high-fail component on a FANUC drive as it is very susceptible to electrical surges. There are a number of explanations for these errors. Why am I getting errors when I connect to my FANUC drive’s RS-232 port? This will test both the motor and the cable for problems. The proper way to troubleshoot a FANUC motor for a short is to first lock out the machine, remove the cable from the drive, and test all three motor phases to ground with a megohmmeter. What is the proper method to test a motor for a short?
#Manual program fanuc 3t how to#
Read on to learn common FANUC issues and how to best troubleshoot to solve the problem. FANUC CNC machine is an extremely useful tool – but like many tools, it’s susceptible to breaking.
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