DSCL110A  57310001-KY ABB 冗余控制单元

DSTC170 57520001-BK

DSCL110A 57310001-KY With the intensification of manufacturing competition, manufacturers are more pursuing the reliability of production equipment, especially those that control key production processes, often need to use redundant configuration. Most programmable controller based redundant systems use two sets of CPU processor modules, one processor module as the primary processor, the other as the slave processor. Under normal circumstances, the main processor executes the program, controls the I/O device, and constantly monitors the status of the main processor from the processor. If the master processor fails, the slave processor immediately takes over control of I/O and continues to execute the program, thus achieving redundant control of the system.
DSCL110A 57310001-KY Redundancy control is a control method that uses a certain or multiple number of devices or components to form a control system. When a device or component fails and is damaged, it can be switched to each other as a backup device or component through hard, software or human means to replace the damaged equipment or components due to failure, maintain the normal work of the system, and minimize the shutdown loss caused by accidents of the control equipment.
DSCL110A 57310001-KY Generally according to different product applications and customer needs, redundancy control can be divided into: (1) processor redundancy (CPU redundancy); Communication redundancy (network redundancy); ③I/O redundancy; ④ Power supply redundancy.