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Which PLC & IO system (ET200-L, ET-200-M, ET200-S) more suitable/Commonly used for controlling a overhead crane
Created by: B PRASHANT at: 8/10/2011 3:56 PM (3 Replies)
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| 8/10/2011 7:30 PM | |
Joined: 9/27/2006 Last visit: 6/6/2023 Posts: 12036 Rating:
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Hello B. Prashant; The design of the control system for the crane is under your responsability? Is this a revamp application? If you intend to use Profibus-DP I/O inside control panels in the crane, then any of the three mentionned ET 200 systems could be used. They can all be acquired as "Siplus" modules (with extended temperature range, -25 to +60 degrees C), as can be seen in these links: ET 200 Brochure: https://www.automation.siemens.com/salesmaterial-as/brochure/en/brochure_simatic-et200_en.pdf?HTTPS=REDIR ET 200 electronic catalog page: https://www.automation.siemens.com/MCMS/DISTRIBUTED-IO/EN/Pages/Default.aspx The differences between the different modules is clearly explained in the brochure. Basically: ET 200L slaves come as "brick" I/O, with 16 or 32 points max, either all inputs, all outputs or a mixture of both. They have no possibility of adding a CPU module. ET 200M slavess are based on the S7-300 I/O and racks, and are modular (8 or 12 modules per rack, depending on the IM 153-2 model used as a slave communication head). So you can use a lot more I/O per node. You can also replace the IM 153-2 with any CPU from the S7-300 if you require local intelligence (in case of loss of comms, for example). ET 200S slaves are also modular, and can have either a slave comm. head or a local CPU (the equivalent to a CPU 314); however, they are based on a "granular" configuration, each module can have either 2 or four points, so it is much more flexible in small applications. They occupy less space in the cabinet and can be adapted to any project by selecting the appropriate number of I/Os. Give us an idea of the configuration you are planning, we might be able to prvide more hints, if needed. Hope this helps, Daniel Chartier |
| 8/11/2011 6:10 AM | |
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Posts: 24 Rating:
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[quote user="dchartier"]Hello B. Prashant; The design of the control system for the crane is under your responsability? Is this a revamp application? If you intend to use Profibus-DP I/O inside control panels in the crane, then any of the three mentionned ET 200 systems could be used. They can all be acquired as "Siplus" modules (with extended temperature range, -25 to +60 degrees C), as can be seen in these links: ET 200 Brochure: https://www.automation.siemens.com/salesmaterial-as/brochure/en/brochure_simatic-et200_en.pdf?HTTPS=REDIR ET 200 electronic catalog page: https://www.automation.siemens.com/MCMS/DISTRIBUTED-IO/EN/Pages/Default.aspx The differences between the different modules is clearly explained in the brochure. Basically: ET 200L slaves come as "brick" I/O, with 16 or 32 points max, either all inputs, all outputs or a mixture of both. They have no possibility of adding a CPU module. ET 200M slavess are based on the S7-300 I/O and racks, and are modular (8 or 12 modules per rack, depending on the IM 153-2 model used as a slave communication head). So you can use a lot more I/O per node. You can also replace the IM 153-2 with any CPU from the S7-300 if you require local intelligence (in case of loss of comms, for example). ET 200S slaves are also modular, and can have either a slave comm. head or a local CPU (the equivalent to a CPU 314); however, they are based on a "granular" configuration, each module can have either 2 or four points, so it is much more flexible in small applications. They occupy less space in the cabinet and can be adapted to any project by selecting the appropriate number of I/Os. Give us an idea of the configuration you are planning, we might be able to prvide more hints, if needed. Hope this helps, Daniel Chartier |
Last edited by: B PRASHANT at: 8/11/2011 6:19 AMDear sir, I am more concerning about ruggedness of PLC system. As panel is mounted on crane itself, so PLC system will under goes of vibrations and shock of crane. Due to these Vibration & shocks the PLC system must not fail. so i want to know which ET200 System is most suitable for such envoirment? |
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