In 80% of the caseswhen a PLC fails, the problem boils down to one of the following three factors:
- module failure of the input/output (I/O)
- problems with a field device
- problems with the power supply
To function efficiently and correctly PLC system needs a signal to enact a sequence and these factors deny the PLC system to send that signal. When a problem with one of these components occurs, the issue becomes apparent with disruptions to the process at hand. In some cases, the process stops abruptly. Various issues could responsible in this situation, including the following:
- error in the PLC configuration
- loose terminal blocks
- failed VCD supply
- problems with the wires
- tripped circuit breaker
- In some cases, the I/O module might be due for a replacement.
The Repair Process
Axxa has decades of experience in PLC repairs. We also provide DCS repair, sales and support.