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Two spindles in 840D sl

Created by: Pavlik at: 7/13/2009 3:16 PM (5 Replies)

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7/13/2009 3:16 PM	Rate (0)
Pavlik Posts: 20 Rating: (0)	Hi, hereby I would like to ask you how to switch two spindles without executing power on. We have two changeble milling heads with different spindle motors: synchronous motor with encoder 1 Vpp – 512 linecounts – encoder connected to spindle module via Drive-Clique interface SME asynchronous spindle with encoder 1 Vpp – 256 linecounts – encoder is connected to last power module (Z axis) via Drive-Clique interface SME Originaly it was one encoder line from head interface to spindle power module. Later I doubled it by the second cable, I thought it would be better for the configuration. It means that one Vpp signal is conneted to the both Drive-Clique interfaces SME. Unfortunately I was not able to succesfully switch over the spindles.. I thought that I change parametres p400 in drive data (first p10) and then from PLC by means of FB3 – PUT. But I have always the problem with axis data MD31020[0] a [1]. These are Power on and when I change resolution in Drive data – error from Axis data appears. I also tried to change encoder gear but no success. Please, help me how to simply switch over two different spindles. Thanks Pavlik Hardware: Siemens Sinumerik 840D Solution line Sinamics PCU50.3
Pavlik Posts: 20 Rating: (0)
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7/13/2009 4:16 PM	Rate (0)
RAM81 Silver Member Joined: 3/3/2008 Last visit: 4/9/2025 Posts: 333 Rating: (52)	hi pavlik, can you give me some more details have you configured two different spindle?? are you are using two motors to control a single spindle..for example in speed control you are using one motor and in positioning you are using another??? this will help me to answer your queries.. with regards ram

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7/13/2009 4:39 PM	Rate (0)
Dave Posts: 271 Rating: (29)	Hello Pavlik, My strength is not in NC; however, there is a SETMS command that allows one to change the master spindle from one to another. The simplest way to accomplish this is to use separate motor modules for each motor and separate SME, too. The drive data required (as you may know) for a synchronous motor and an asynchronous motor is quite different. The commutation angle for the synchronous motor is critical and it must be determined at first enable each time. Hope this helps...
Dave Posts: 271 Rating: (29)
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7/14/2009 8:33 AM	Rate (0)
Pavlik Posts: 20 Rating: (0)	Thank you fo the answers, I try to add more information. Every milling head is equipped by one spindle - it means every time one spindle runs only. Spindles work in the speed mode. I tried to change them via different encoder set - EDS0 - EDS1. But I think the problem is in Axis data - resolution of encoders - these data are Power on. Help me? Pavlik
Pavlik Posts: 20 Rating: (0)
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7/14/2009 10:19 AM	Rate (0)
RAM81 Silver Member Joined: 3/3/2008 Last visit: 4/9/2025 Posts: 333 Rating: (52)	hi pavlik, then in your case define two spindle namely in MD35000=1 for first spindle and MD35000=2 for second spdindle. then you can easily command the spindle by using setms command ex: SETMS(1) or M1=3 S500 SETMS(2) or M2=3 S1000 like that with regards ram Attachment spindle.pdf (453 Downloads)

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7/14/2009 10:50 AM	Rate (0)
Pavlik Posts: 20 Rating: (0)	Thank you for your help, I will test it tomorrow, maybe it could be the right way. Pavlik
Pavlik Posts: 20 Rating: (0)
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