Now PLC is commonly used in the field of industrial control, in energy, environmental protection, manufacturing and other fields. In actual use, PLC assumes important production control functions and engages in repetitive mechanical work, so the equipment burden is large, but many companies do not pay attention to PLC maintenance, resulting in frequent PLC failures, input and output programs do not perform and other problems, thus affecting the subsequent production and management, resulting in more losses.
In the event of PLC failure, two programs are often used to dispatch engineers for on-site maintenance or remote maintenance through the network. OMRON PLC adopts industrial-grade design, with stable operation, simple operation, easy to expand and other characteristics, so most of the failure program problems, the use of remote maintenance is more cost-effective. Below is a brief overview of the differences between the two types of maintenance.
Field maintenance and troubleshooting
1. Power Check: Check for damage, corrosion, or other link misconnections by checking the power and grounding vanilla. Also check whether the correct voltage is applied.
2. IO module failure: Check whether there is any error in the configuration of the part of the system that is physically separated from the IO module, which can be tested by running the PLC on the spot for uploading, downloading and updating the program.
3. Field wiring faults: PLC internal modules are generally protected by blown fuses, which can be observed in real time and thus replaced, while the network cable is also part of the check.
Advantages of remote maintenance
On-site maintenance requires the dispatch of engineers to travel for on-site maintenance, transportation, food and lodging are required to spend extra money, but also does not rule out the problem of PLC program failures, this time the use of remote maintenance is easier and simpler way to save money and improve maintenance efficiency.
1.Remote configuration management
Through the Internet of Things gateway can remotely locate the site PLC, provide equipment map display, equipment status statistics, equipment remote configuration, equipment remote management and other functions. Engineers save the trouble of traveling, but also fast and timely maintenance.
2. Equipment Health Monitoring
Through the equipment management platform, you can view the health status of the equipment and operational status, such as service life, maintenance records, equipment SMS, WeChat, e-mail and other automatic alarm notification.
3. Equipment remote maintenance
Through the equipment maintenance express, you can use the gateway to remotely locate the PLC equipment that needs to be maintained, build a remote maintenance channel, remote diagnosis, remote debugging and remote download program, safe and stable, easy to operate.
For enterprises, in addition to the realization of remote maintenance needs, but also pay attention to their own use of equipment maintenance, good maintenance can extend the service life of the equipment to ensure efficient production operation.
1. Installation of PLC electrical control cabinet to have a clean and dry environment. Internal moisture absorption should be placed on the dry matter, and to prevent coolant, oil mist splash, keep the air inlet clean and dry.
2. Regardless of the system work or shutdown state, the electrical cabinet door should always be in a closed state, to maintain good sealing of electrical components.
3. Regularly check, clean or replace the fan filter and dust net according to the specified requirements.
4. regularly clean the dust inside the electrical cabinet and electrical components to keep the electrical components in a good working environment and working condition.
5. keep the import and export of cables and wires in a sealed condition to prevent the intrusion of debris and dust.