Common Errors; Maintenance - Mitsubishi FX1N-422-BD Hardware Manual

FX1N Series Programmable Controllers
7.3

Common Errors

- Corroded contact points at some point in an I/O line.
- An I/O device has been used outside its specified operating range.
- An input signal occurs in a shorter time period that taken by one program scan.
7.4

Maintenance

- Check interior temperature of the panel.
- Check panel air filters if fitted.
- Check for loosening of terminals or mounting facilities (due to vibration).
Diagnostics 7.
7-3