Thursday, August 12, 2010
Automatic Gates using PLC
Information on Drawing Numbers for Automatic Gates using PLC :
1. Area Sensor (If there are objects, the sensor output OFF)
2. Area Sensor (If there are objects, the sensor output OFF)
3. Area Sensor (If there are objects, the sensor output OFF)
4. Area Sensor (If there are objects, the sensor output OFF)
5. Electric Motor And Gearbox
6. Limit Switch for Open gate condition
7. Limit Switch for Closed gate conditions
8. Gate
Number Of Inputs and Output PLC applied :
1. Number Of Inputs PLC is 6 Input :
--- 4 Unit Input for Area Sensor 1,2,3,and 4.
--- 1 Unit Input for Limit Switch for Open gate.
--- 1 Unit Input for Limit Switch for Closed gate.
--- Total Number Of Inputs PLC is Minimum 6 Input Unit.
2. Number Of Output PLC is 2 Output :
--- 1 Unit Output to contactor for Electric Motor (Open Gate ).
--- 1 Unit Output to contactor for Electric Motor (Close Gate ).
--- Total Number Of Outputs PLC is Minimum 2 Output Unit.
Sequence PLC Programming for Automatic Gates :
1. Open Gate
a. If Area Sensor 1 = OFF Then Electric Motor for Open Gate = ON.
b. If Limit Switch for Open gate = ON Then Electric Motor for Open Gate = OFF.
c. Electric Motor for Close Gate = always OFF
2. Close Gate
a. If Area Sensor 4 = OFF AND Area Sensor 2 = ON AND Area Sensor 3 = ON Then Electric Motor for Close Gate = ON.
b. If Electric Motor for Close Gate = ON AND Area Sensor 2 = OFF OR Area Sensor 3 = OFF Then Electric Motor for Close Gate = OFF AND Electric Motor for Open Gate = ON.
Note : For All Area Sensor : If there are objects, the sensor output OFF
GE Substation Automation Components
Software application
A powerful suite of flexible, user friendly software applications and graphical user-interface modules are available. These advance user interface and easy to configure tools enable improved date reporting and data base configuration management.
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A range of network components are available to tie and new legacy equipment into one unified system. GE can provide secure and reliable communications media based on experience and expertise in numerous network systems.
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Gateways/Servers
Robust system for monitoring a controlling substation device as well as for performance automation, IED gateways, and host communication functions. The systems have the processing power to monitor and control over 40 IEDs and thousands of I/O points.
Monitors and sensors
With a portfolio of sophisticated monitoring and diagnostics systems for critical substation equipment, remote monitoring of performance and critical fault detection is achievable. These advance systems enable you to improve performance and service reliability as well as extend the useful life of critical assets.
Feeder automation
Distribution Automation Remote Terminals equipped with auto-section-alizing and automation restoration software can dramatically reduce a customer’s outage frequency.
A powerful suite of flexible, user friendly software applications and graphical user-interface modules are available. These advance user interface and easy to configure tools enable improved date reporting and data base configuration management.
Network communications
A range of network components are available to tie and new legacy equipment into one unified system. GE can provide secure and reliable communications media based on experience and expertise in numerous network systems.
Intelligent Electronic Devices
A family of modular and flexible intelligent electronic devices is available for solving the biggest challenge of integrating relays from existing substations and new systems. Our relay family provides the latest for relay integration, protection, and control, with high speed, open standard peer-to-peer communication for connecting directly to the LAN.
Gateways/Servers
Robust system for monitoring a controlling substation device as well as for performance automation, IED gateways, and host communication functions. The systems have the processing power to monitor and control over 40 IEDs and thousands of I/O points.
Monitors and sensors
With a portfolio of sophisticated monitoring and diagnostics systems for critical substation equipment, remote monitoring of performance and critical fault detection is achievable. These advance systems enable you to improve performance and service reliability as well as extend the useful life of critical assets.
Feeder automation
Distribution Automation Remote Terminals equipped with auto-section-alizing and automation restoration software can dramatically reduce a customer’s outage frequency.
Monday, June 21, 2010
The Benefits of Conversion RS Logix 500 to RS Logix 5000
The conversion programming from RS Logix 500 to RS Logix 5000 seen versatility alone could make the conversion from the RS Logix 500 platform to the RS Logix 5000 platform a worthwhile venture. With four different programming languages at your disposal, almost every electro-mechanical control application conceivable can be accomplished through the implementation of Rockwell Software’s RS Logix 5000 software.
Due to the multiple programming languages, it was able to be shortened. Each programming language has a topic that it has been designed for. With this in mind, the Ladder logic pertaining to the heating zones was more suitable for function block diagrams than Ladder logic. The commands are more suitable to particular applications, therefore, shortened the code.
Another benefit is having the ability to program all inputs and outputs using descriptive tags. It was obvious through the project code writing processes that a program with tags would make a program not only easier to follow, but easier to troubleshoot too. Additionally, the ability to monitor and change tag values, while the program is online, has been a benefit. For example, gain values for a PIDE function block can be changed online to optimize your PIDE curve. The result of this tuning can be seen almost instantaneously and will not disrupt the other program functions.
Due to the multiple programming languages, it was able to be shortened. Each programming language has a topic that it has been designed for. With this in mind, the Ladder logic pertaining to the heating zones was more suitable for function block diagrams than Ladder logic. The commands are more suitable to particular applications, therefore, shortened the code.
Another benefit is having the ability to program all inputs and outputs using descriptive tags. It was obvious through the project code writing processes that a program with tags would make a program not only easier to follow, but easier to troubleshoot too. Additionally, the ability to monitor and change tag values, while the program is online, has been a benefit. For example, gain values for a PIDE function block can be changed online to optimize your PIDE curve. The result of this tuning can be seen almost instantaneously and will not disrupt the other program functions.
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