DSAI146 3BSE007949R1 Analog Inp. Unit 31 ch. Pt100

Description

3BSE007949R1

General Information

Product ID:3BSE007949R1

ABB Type Designation:DSAI 146

Catalog Description:DSAI 146 Analog Inp. Unit 31 ch. Pt100,

3BSE007949R1

+

Where Used (as part of “kit”)

Additional Information

Medium Description:DSAI 146 Analog Inp. Unit 31 ch. Pt100,

Technical Information:Analog Input Unit

Product Type:I-O_ Module

Dimensions

Product Net Depth / Length:324 mm

Product Net Height:22.5 mm

Product Net Width:234 mm

Product Net Weight:0.4 kg

System software, updating various process control schemes is the most basic function of DCS. When a scheme changes, engineers only need to compile the changed scheme on the engineer station and execute the download command. The download process is automatically completed by the system, without affecting the operation of the original control scheme. Various control software and algorithms of the system can improve the control accuracy of the controlled objects required by the process. For the system composed of PLC, the workload is extremely huge. First, it is necessary to determine which PLC is to be edited and updated, then use the corresponding compiler to compile the program, and finally use the special machine (reader and writer) to specially one-to-one transfer the program to this PLC. During the system debugging, the debugging time and debugging cost will be greatly increased, and it is extremely unfavorable for future maintenance. There is a great difference in control accuracy. This determines why in large and medium-sized control projects (more than 500 points), the system connected by PLC is basically not used.

Module: All I/O modules of the DCS system are equipped with CPU, which can realize the quality judgment and scalar conversion of the collected and output signals, plug and unplug the fault live, and replace them randomly. The PLC module is only a simple electrical conversion unit, without intelligent chips. After the failure, the corresponding units are all paralyzed.

At present, the functions of high-end PLC and DCS are almost the same. DCS has a strong function for network and distributed database, and also has a strong ability for computing and analog processing.

PLCs are also divided into large, medium, small and micro PLCs, of which the micro ones only sell hundreds to 2000, and the number of points is very small. The large ones can carry thousands of points. The computing ability is similar to that of DCS, but the multi-machine networking function is weak.