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Profibus.

Created by: Dob at: 11/12/2013 6:21 PM (6 Replies)

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11/12/2013 6:21 PM	Rate (0)
Dob Posts: 40 Rating: (0)	Hi. I have an italian made flexo-printer with 40 italian madestepper drives (CMZ) which give us a nightmare....we want to replace them with something more reliable, the problem is that the manufacturer is not willing to provide us with any technical info in order to be able to integrate different make of drives (then we will stop sending drives to repair:)) the only digital signal on the driveis enable and the rest is coming on Profibus....does anyony see a solution how to integrate different drive make into the system? Thanks.
Dob Posts: 40 Rating: (0)
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11/12/2013 7:30 PM	Rate (0)
0_Einstein Diamond Member Joined: 7/7/2010 Last visit: 9/19/2024 Posts: 15207 Rating: (2417)	Dob Hi. I have an italian made flexo-printer with 40 italian madestepper drives (CMZ) which give us a nightmare....we want to replace them with something more reliable, the problem is that the manufacturer is not willing to provide us with any technical info in order to be able to integrate different make of drives (then we will stop sending drives to repair:)) the only digital signal on the driveis enable and the rest is coming on Profibus....does anyony see a solution how to integrate different drive make into the system? Thanks. Is the plc programming completely open to you so you can change to suit new drives?
	science guy
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11/12/2013 8:06 PM	Rate (0)
Dob Posts: 40 Rating: (0)	It is unknown PLC...probably some Italian make...no access to it. Thanks.
Dob Posts: 40 Rating: (0)	Last edited by: Dob at: 11/12/2013 8:30 PM
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11/12/2013 9:49 PM	Rate (0)
0_Einstein Diamond Member Joined: 7/7/2010 Last visit: 9/19/2024 Posts: 15207 Rating: (2417)	Dob It is unknown PLC...probably some Italian make...no access to it. Thanks. You might consider purchasing the PLC programming, or contract with someone in your area to replace the plc and programming with something you can support. In this way, you can decide what drive / plc combination is right for your situation. What has the drive manufacturer said to you about the returned failed drives
	science guy
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11/12/2013 10:46 PM	Rate (0)
Dob Posts: 40 Rating: (0)	We send them back to the machine manufacturer, he sends them to the drive manufacturer to fix, when we tried to contact the drive manufacturer - were told that these drives were sold to this particular machine builder and they can't provide me with any info.....:).
Dob Posts: 40 Rating: (0)
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11/12/2013 11:16 PM	Rate (0)
0_Einstein Diamond Member Joined: 7/7/2010 Last visit: 9/19/2024 Posts: 15207 Rating: (2417)	Dob We send them back to the machine manufacturer, he sends them to the drive manufacturer to fix, when we tried to contact the drive manufacturer - were told that these drives were sold to this particular machine builder and they can't provide me with any info.....:). I have been in the same position asyou. Ask the drive manufacturer what happens when that machine builder goes out of business. Can they tell you details on the drives if that happens? Can you have the drive manufacturer rebuild a failed drive and give you a detailed report on what failed and why? Will they help make a better motor that will last? In the long term, it may be less expensive to rework the plc logic and put in drives/motors that hold up under the conditions you need them to run. For example, it is very normal to purchase a piece of equipment you tell the builder will run 2 shifts 5 days/week, and then scheduling and operations and sales says run it 3 shifts 7 days a week. With no time for routine maintenance (which is implied by 2 shifts 5 days/week as available), machines fail very quickly compared to what you would expect. I am not saying this is your case, but I have seen it happen many times that the builder designed equipment to run a certain number of hours per year, and it was actually needed to run almost twice the designed amount. Equipment wore out very fast because it was not designed for the high uptime. Had the builder been asked to build equipment for 7 days/3 shift operation, they would have used more robust hardware and ease of repair/replace would have had more importance. Truly a case of pay me now or pay me later. All that said, I hope you find a solution working with your equipment maker and drive maker to work together to find a better set of drives/motors or find out what is wearing out and failing so quickly so they can build better version 2 of them for you!
	science guy
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11/14/2013 7:09 PM	Rate (0)
Dob Posts: 40 Rating: (0)	Thank you.
Dob Posts: 40 Rating: (0)
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