1756-L61 B Fault Signal Detection Procedure

1756-L61 B When designing the fault diagnosis, the possible faults of the whole system must first be analysed to obtain the fault hierarchy of the system, and this hierarchy is used to design the fault diagnosis part. Manual and automatic switching is convenient, strong anti-interference ability, suitable for the harsh working environment of the steel production line, and easy to communicate with the computer to achieve network monitoring.

The hierarchical nature of the 1756-L61 B system fault structure provides a reasonable hierarchical model for fault diagnosis. When carrying out the programme design of the system, the hierarchy of the fault structure should be fully considered and the logical flow should be reasonably arranged. It is necessary to introduce all the detection points of the system that may cause faults into the PLC, which is mainly from the consideration of safe and reliable operation of the system, so that the system can carry out timely troubleshooting

1756-L61 B should be as much as possible under the conditions allowed by the system will be the lowest level of fault input information into the PLC programme, in order to get more fault detection information for the system’s fault self-diagnosis services. After online debugging and industrial test operation stage, the control system has been formally put into operation in 2004, since the operation, the effect is good, to achieve the predetermined control function requirements, to overcome the limitations brought about by the relay, contactor control, to avoid the original control system of auxiliary components, high failure rate, high noise, a single control mode, maintenance difficulties and other issues.