Overview: PLC System
The programmable logic controller, also known as, PLC, consists of a central processing unit (CPU), and a few subordinate input/output (I/O) modules. The CPU unit is responsible for carrying the logic program for the machinery, receive inputs and produce an output signal when the overall system logic is satisfied. PLC machines are a direct link between the actuator component of a hydraulic system and a CPU.
The PLC system was developed in the late 19th century just to replace the growing complex industrial machine controls. PLC as a system offers reliability, flexibility, cost reductions, and simplified maintenance through high efficiency. This device is the most indispensable tool manufactured in an automated operation. They are generally preferred by industries that employ complex automated systems over traditional electrical relay controllers. However, since no machine is constructed for 100% efficiency, it is quite normal to experience occasional technical hitches that bother the PLC performance. So, to overcome the same it is advisable to approach reliable service providers to perform PLC repair.
Easy Steps to PLC Repair Procedure
Service providing companies offer priority service in the most efficient and fastest turnaround time. Such companies offer smooth services and provide detailed information during the operational phase. If your PLC device needs repair, read through the given steps below to find the different ways to solve the issue.
- When the service center receives the unit, the device is logged into the database of the company’s system and a unique job number is assigned to that unit.
- All units are visually inspected and evaluated to check if there are failures such as corrosion, water damage, heat stress, and excessive burnt parts.
- This above step in PLC repair is conducted just to prevent the unit from being repairable.
- The service center then quotes the unit and waits for the client’s or customer’s approval.
- Once the company receives the approval, the input signals are investigated with an authentic signature analysis tester.
- If during the test, the input signals turn out to be defective in nature then the overall electronic circuitry is checked for issues.
- In case, if the input signals test good, the whole unit is turned on, tested and analyzed for the main cause of failure.
- Once all the above steps have been performed, i.e. repairs and preventive maintenance have been conducted on the unit; the device is finally tested in an authentic OEM test fixture.
In the final steps after service in PLC repair, if the unit passes its test it is added with a conformal coat so that it is protected from the harsh and undesired environments. Most of the service centers also generate a service report so that the details of the findings and procedure specifications are well documented for a better understanding of why PLC failed.