Compactlogix L35 and motion control

[robw53]

we have a bagel line that has an old SLC 5/03 and 4 ultra 3000's with breakout boards for the I/O, we have a second newer double line which has 3000's on devicenet, on this line we are able to adjust the positioning of the reciprocators and my boss is looking at doing that on the older line, we had a company come in who specialise in drives and the guy use to work for rockwell drives division and we both spoke about upgrading the PLC as its 10 years old and it would open up more possibilities for control of new drives, i was looking at maybe L35E processor and either having a 1769-SDN or my favourite would be to get drives on ethernet what i want to know is...

1. is there a limit to how many drives you can have on ethernet with a L35E

2. what drives are avaliable on ethernet Kinetix 300, 6500 etc

3. and anything else i may find relevant, past experiences etc.

 

[DamianInRochester]

The L35E can have 32 EIP connections. How many you use for motion connections are at your discretion.

The Kinetix 300 drives are for simple positioning appications, so if you don't have any sophisticated interpolation or master/slave stuff going on you would probably be ok. Kinetix 300 is also limited in amp size, so if you went that route you would want to check and make sure the largest sercvo you will need is within the Kinetix 300 range.

My preference is always EIP as opposed to Devicenet. I won't do any new installation with devicenet unless explicitly demanded by the customer. The ethernet route will be less expensive as well.

I think the L35E is a good choice It is the one I use the most.

 

[robw53]

as for the application what it will do is from the home position sensor will do 4 or 5 selected movements depending on the pattern in the same direction and return home, i have it on you tube at 8min it is the white belt which is what the servo will be driving backwards and forwards

i have already looked at that and they go upto 3kw (4hp) so that is within our limitations, i agree with EIP its what i want to use, what about the 6500 they have ethernet also, but they look too complex for what application we need it for.

http://www.youtube.com/watch?v=X2lux9fx0n4

 

[robw53]

its the positioning of the bagels which we need to adjust so distance between each movement etc we will want to adjust

 

[DamianInRochester]

The Kinetix 6500 have not been out that long, so I haven't had a chance to use one yet. I have noticed though that some of the verbage in the brochures leads you to believe you have to go up to a Control Logix CPU to utlize some functionality. Perhaps someone in here that has used them can educate us.

As for the application itself, based on you movie, I don't anything outside of the capabilities of the L35E and the Kinetix300.

I imagine that the Kinetix 6500 will be much more robust than the Kinetix 300 though from a reliability standpoint.

 

[Ken Roach]

As I understand it, the Kinetix 300 is the EtherNet/IP based successor to the DeviceNet-based Ultra 3000 indexing drive. It does the same sort of self-contained indexing with an I/O connection that runs across a network.

This sort of functionality does not provide multi-axis interpolation or synchronization and does not use the ControlLogix "Kinetix" functionality with the built-in motion planner and motion instruction set. It also doesn't require a motion-capable ControlLogix 1756-Lxx or CompactLogix 1768-L43/L45 controller.

The Kinetix 6500 is an extension of the Kinetix integrated motion control family that uses CIP Motion over Ethernet to perform control and synchronization, rather than using the fiber-optic SERCOS network.

If your machine today uses Ultra 3000 on DeviceNet, then the Kinetix 300 is very likely the best choice to use with a CompactLogix 1769-L3x controller.

 

[Ken Roach]

Followup: DamianInRochester knows the Kinetix 300 very well from significant experience, while I was going from my past experience with the Ultra 3000. I defer to his posts for user experience information.

 

[DamianInRochester]

Ken, I think you actually summed it up very well about the 300. Thanks for the clarification on the 6500.

 

[robw53]

i think the kinetix 300 are the way forward then, i have looked through the net to find information on specs etc and what do you need as i see that the kinetix 6xxx have chassis power rails etc, are the 300 just a stand alone unit or do they need other extras?

 

[DamianInRochester]

i think the kinetix 300 are the way forward then, i have looked through the net to find information on specs etc and what do you need as i see that the kinetix 6xxx have chassis power rails etc, are the 300 just a stand alone unit or do they need other extras?

The Kinetix 300 is completely stand alone. I highly recommend going with the absolute feedback option on the motors (I think it was about $100 extra). You will need the IO breakout board to wire in the limits and enable signal. They also have a "Safe Torque Off" connector on the bottom, so you'll want to get a safety monitoring relay for that and the contactor if you choose to use that option. Depening on what motor you get, you will also need a connector for the feedback connections (will have a battery for the absolute version).


With everything I hear about the prices on Neodynium, don't wait to buy your servos!

 

[robw53]

i suppose the first step is to get the processor upgraded to a L32E or L35E and then we can look at getting the kinetix 300, im sure its going to be an exciting learning curve