5/23/2014 9:29 AM | |
Posts: 11 Rating: (0) |
Hi, I'm using GF meters for measuring the PH. Apart from this a local level sensor. I dont know the name. I have attached the Manual for the GF meter. if i replace the new module it will work good for some days. Again it is going bad. Also i have sent these failed modules to siemens for service. They say me that a Chip inside the module has been damaged. When i ask the reason, they say may be due to more power. I asked them whether there was any problem in the input terminals. They said only CHIP. Attachment8750-1manual.pdf (589 Downloads) |
5/23/2014 9:42 AM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839)
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Hello, For Module6ES7331-7KF02-0AB0there's a rule. Connection should match the black bridge seetings as per manual and as per hardware configruration to let the module operate in its right way. More over in some cases, if you set the black square in wrong position, it will destroy the module. Please resvise the Module data. I have no explanation for what happen in your case, but in the same time I do not like others to play same game with their 7KF02 modules as they may lose these modules. Hope this helps.
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Ayman Elotaify |
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5/23/2014 9:44 AM | |
Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181) |
Change the connection type regarding the sensor. |
5/23/2014 10:00 AM | |
Posts: 11 Rating: (0) |
Hi, I have attached a picture how i have made the wiring for the module |
5/23/2014 10:05 AM | |
Posts: 11 Rating: (0) |
hi Ayman Elotaify, Can you please tell me about this black bride connection. I'm not clear about this concept |
5/23/2014 12:24 PM | |||||||||||
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839)
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Hello kalidasan, If your module 6ES7331-7KF02-0AB0 is in your hand now, please look at its side, you will see Four Black Squares. Each square can be set into position A, B, C or D. It's called measurring range modules. These modules should be set in its correct position according to the type of sensor you connect in according to the following table:
The above table can be found in theSIMATIC S7-300 S7-300 Module data,section "6.7.1" Moreover, you have to define the sensor correctly in HW config in order to recieve a correct value on the AI module. And moreover, when you set the HW configuration with the sensor measuring data, it tells you info about the setting of these measuring range modules as per the attached picture. Hope this helps.
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Ayman Elotaify |
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5/23/2014 1:12 PM | |
Joined: 11/21/2007 Last visit: 8/12/2024 Posts: 2325 Rating: (308) |
Did you ever try to read the Manual ? The Black Bridge ( Not Bride ) Mentioned by Ayman Elotaifyis the set of 4 black submodules on the right side of the AI Module. As per your Sketch, that se correctly set at "D" for 2 wire trasducer. Just why have you defined the Module as 0-10V in Hardware Configuration. I think that Module "SF" LED would glow if channel type defined in Hardware Configuration and the Module do not match. First and foremost, the two must match. Thereafter if you face any problems, pl post them here Cheers Navnag |
There is no such thing as the last bug in a program |
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5/23/2014 2:03 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839)
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Hello again, To finish this issue here, I would like you to see the attached pictures to know exactly where are the measuring modules (black squares) And please note that this module is 8 channels AI. with 4 groups. So each measuring module change the measuring range for 2 channels of that module.
Attachment331-7KF.zip (275 Downloads) |
Last edited by: Ayman Elotaify at: 5/23/2014 2:07 PMAyman Elotaify |
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5/23/2014 4:15 PM | |
Joined: 4/11/2011 Last visit: 9/23/2024 Posts: 132 Rating: (7) |
I am wondering... In your pictureDSC_1782[1].jpg"+" and "-" from the meter. What terminals are used? According to manual on page number 3 there is "Connection to a PLC/Recorder, separate supply". Are you using this connection? Terminals 1 and 2. If you are using terminals 3 and 4 ( "output -" and "output +") as an input of analog module, then your problem is known. As8750-1manual.pdfsays:
You just short circuit an analog input of module. If this is a case.
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I'm just a human. Mistakes are allowed. |
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5/23/2014 4:32 PM | |
Posts: 11 Rating: (0) |
hi Krriipc My huge doubt is here. as per the DSC_1782[1].jpg, i have connected Terminals 1 and 2 for '+' and '-' respectively. But I think what I have made is not in accordance to the manual on pg no 3 there is "Connection to a PLC/Recorder, separate supply". But if i make this as per "Connection to a PLC/Recorder, separate supply", The meter is not getting "ON". Also as per Pg no:22 in the attachment, the two wires should be directly connected from the transmitter to the module. I think a lot about "where is the current loop in this?". But dully followed as per the diagram in Pg no:22 Attachments7300_sm331_ai_8x12_bit_getting_started_en-US_en-US.pdf (291 Downloads) |
5/23/2014 5:17 PM | |
Joined: 11/21/2007 Last visit: 8/12/2024 Posts: 2325 Rating: (308) |
Hello kalidasan You need to check whether your transmitter is a 2-wire or 4-wire ? The Below attachement will help you understand the difference between the two. In both cases there are only 2 wires connected to the AI Module. In case of 2-wire ( Loop Powered ) the transmitter power is derived from the 4-20mA signal itself. In case of 4-wire, transmitter requires a separate auxiliary supply Hope this helps Cheers Navnag AttachmentDiff between 4-20ma 2Wire 4Wire.pdf (321 Downloads) |
There is no such thing as the last bug in a program |
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This contribution was helpful to1 thankful Users |
5/23/2014 5:45 PM | |
Posts: 11 Rating: (0) |
i'm using 2 wire 4-20ma. i'm damn sure about this. I'm not sure about this termination in the PLC side |
5/23/2014 5:49 PM | |
Posts: 784 Rating: (52) |
Attach screen shot for the connection into PLC
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5/23/2014 6:02 PM | |
Posts: 11 Rating: (0) |
Hi Ayman Elotaify I get confused on seeing the module data manual only. Can you please say me how to make the termination i have attached my sensor manual with this. i want to know how to make the termination for Channel 0 in the AI module Attachment8750-1manual.pdf (290 Downloads) |
5/23/2014 6:27 PM | |
Joined: 11/21/2007 Last visit: 8/12/2024 Posts: 2325 Rating: (308) |
Hello kalidasan YourConnections on the PLC side are perfectly all right ( Hand sketch uploadedby you earlier ) Just for your ready reference, pl see attached the 2-wire wiring diagnam for 6ES7331-7KF02-0AB0 Hope this helps Cheers Navnag Attachment6ES7331-7KF02-0AB0_2W_4W.pdf (338 Downloads) |
There is no such thing as the last bug in a program |
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5/23/2014 6:43 PM | |
Posts: 11 Rating: (0) |
Hi Navnag, Yes. I made as per your reference. But i think its not correct. |
5/24/2014 3:20 AM | |
Posts: 11 Rating: (0) |
hi desmul24, I saw an isolator in simens SITRANSI100 Will this be suitable or any other. Attached the manual of the isolator AttachmentFI01_2010_en_Kap07_I100_I200_News.pdf (246 Downloads) |
5/24/2014 6:31 AM | |
Posts: 378 Rating: (73) |
Hello kalidasan, I don't have practical experiance with SITRANSI100, but according to the manual it can work. My experiance is with PEPPERL+FUCHS: http://www.pepperl-fuchs.com/global/en/classid_2516.htm?view=productdetails&prodid=9830 , I have done a lot of projects with this isolater for AI 7KF02 . Regards, |
5/26/2014 6:47 PM | |
Joined: 7/2/2008 Last visit: 8/26/2024 Posts: 928 Rating: (308) |
Hellokalidasan, You are one of the luckiest since your thread attracted more than 34 posts (what a number). However, I don't believe we all truly understand you problem. [quote user="kalidasan"]channels were configured as "D" - 2wire transducer for current measurement.But in my PLC program, i have configured the channels as 0-10V voltage. Ashighlighted earlier byUMENCHOandMarcjan,This is the strangest part of the story. Have you ever had this thing working while misconfigured?! [quote user="kalidasan"]Now the problem is, When i give power to the distributed I/O,it works good without any problem for some days even months.But one day, there will be error in the IM-153 module.SF-LED is constantly on and BF-LED makes flashes.In such a case, If i change a new AI8 module, the problem is solved again. Have you ever read the diagnostic buffer in this case? Have you enabled the module's diagnostic interrupts and group diagnostics in HW config.? Do you have a floating 0 VDC "M" or a grounded one? If you didn't enable diagnostics in this module then I recommend to do so and to read the module diagnostics in case of failure (If the faulty module is accessible). Now, do you have the transmitter working and giving correct mA after all of this confusion in connection and configuration? Do you have any diagnostics from the module in normal operation? Open HW config. and point at the 7KF02 module and press Ctrl+D to read any diagnostic data. No one can tell what the problem is until we make sure it's a channel problem not a module problem. However, maybedesmul24is right and an isolator may solve your problem. [quote user="kalidasan"]I saw an isolator in simens SITRANSI100. Will this be suitable or any other. This is a Stahl intrinsically safe barrier not just a 4-20mA isolator. [quote user="Siemens Catalog"]The transmitter supply units 9160/13-11-11sof the company Stahl are used for the intrinsically safe operation of 2- and3-wire transmitters and for connecting to intrinsically safe mA sources. [quote user="desmul24"]My experiance is with PEPPERL+FUCHS:http://www.pepperl-fuchs.com/global/en/classid_2516.htm?view=productdetails&prodid=9830, I have done a lot of projects with this isolater for AI 7KF02 . The above mentioned P+F is a current driver and not suitable for your application. [quote user="SMHZ"]Isolators are also available in Pepperl & Fuchs like: http://www.pepperl-fuchs.com/global/en/classid_1842.htm?view=productdetails&prodid=35069 This is also a wrong choice. I recommend not to buy a barrier. So, no Stahl"Siemens" and no You can find many 4/20mA to 4/20mA isolators in the market. Just take care that you need something for a 2-wire transmitter. I recommend that you search by your self but as a start take the following as reference for your search. Just remember that you can find tens more with Google. Phoenix conact:Repeater power supply - MINI MCR-SL-RPSS-I-I - 2864079 Weidmuller:ACT20M-CI-CO-OLP-S PR electronics:3186 Best regards, H-H
Attachment8750-1-7KF02.pdf (209 Downloads) |
Last edited by: H-H at: 5/26/2014 8:59 PMEDIT: P+F has signal conditioners but they are SIL2 In very simple applications like the one we have here P+F might be expensive for the job. |
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5/26/2014 8:04 PM | |
Posts: 378 Rating: (73) |
Hello H-H , NO YOU ARE WRONG ! I think the word "current driver" is confusing. Just see the PDF on the link I provided , and I already said " I have many experience with this isolater" Thanks for your ideas compiling the post in a nice way! Rgs, |
Last edited by: desmul24 at: 5/26/2014 8:31 PM |
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5/26/2014 8:56 PM | |
Joined: 7/2/2008 Last visit: 8/26/2024 Posts: 928 Rating: (308) |
Deardesmul24, Maybe you meant another P+F product but you provided a wrong link unintentionally. Maybe you meant thisKFD2-STC4-1. With all respect to your experience but thedatasheetsays it all,
Even if you use it in a reverse direction "I doubt", how would you connect a two wire transmitter?!!!. Best regards, H-H |
5/27/2014 10:12 AM | |
Joined: 9/7/2007 Last visit: 8/30/2023 Posts: 550 Rating: (62) |
Hikalidasan After this long thread we are so curious to know if your problem has been solved or still facing troubles with this module
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Best Regards |
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5/27/2014 10:18 AM | |
Posts: 11 Rating: (0) |
Hi, I was onsite yesterday... Problem still persist. Not solved yet. Hope it will be clear soon |
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