Diagnostics and Troubleshooting to PLC
1.Identify where the problem may be with PLC certain entrances, exits, etc.
2.Check the main PLC is used to supply power (120 or 24 VDC) several times their main power is an LED on the controller action. Also check that the correct voltage is applied.
3.Verify the 24VDC power can be provided internally or from the controller or by an external power supply. It should not be primary fuses are blown.
4.Check power transformer 120VAC or functioning properly inflated and no fuses are blown. This is often used for hydraulic electromagnetic coils, etc..
5.Look for the cell surface or sensors and switches in the problem area. As a tool changer, pallet changer or magazine area. Look through electrical signaling Proxes potential or devices that may be defective.
6.Check each input LED on the API or evaluation of internal control. Each switch manually. Turn the machine shutdown to avoid any sudden movement. But be careful though some scales are not written entirely safe. Remember Proxes generally not state how to ensure they are not if they are not meant so. (more…)
Tags: plc, PLC Diagnostics, PLC error, PLC functions, PLC problem, plc solution, PLC training, PLC Troubleshooting
