Training Global Contents
Maintenance personnel are often confronted with equipment from several manufacturers. This course recognises that maintenance personnel cannot build up a profound technical knowledge of all the equipment to be maintained. One needs to have sufficient knowledge of the equipment, coupled with knowledge of the installation to be able to diagnose the problem and then solve the problem.
With regard to PLC’s and programming software, the maintenance engineer needs to be able to access specific parts of the program and to examine the I/O status. Programming and documenting the program is of less importance. The maintenance engineers should be capable of making small changes to the program.
Problems are most likely to occur with the installation itself and this is reflected in the PLC by for instance a defective sensor, a badly working cylinder etc. These faults can be investigated via the programming terminal and the signal status can be presented dynamically. This is necessary, because designers are not always able to design their programs to register every possible fault and the potential cause.
The maintenance engineer should therefore be capable of executing the following actions:
- To be able to identify if the PLC is still active and that there are no communication errors with the I/O or other coupled PLC’s.
- To determine that the signal of the ‘suspected’ unit will show at the correct PLC reference. One should measure here with a universal meter.