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servo drive connection
« on: April 08, 2007, 09:51:35 PM »
Hi,
I need some advice on connecting my Norwin drive to my pc to run on Mach3.
where do I connect to the drives (pic of cover attached) to my parallel cable.
I tried pin 2 and pin 3 to comd - and comd + without any joy.Its a Boxford ACL lathe
and the old ANC control is done.
thanks
Brian
Re: servo drive connection
« Reply #1 on: April 09, 2007, 12:33:00 AM »
You will need a step and direction to +/- 10V converter to run the Amps.. There are a few that you can get and I don't have a link to them :( A few of the guys here have used them in the past and I think they will tell you more.
Thanks
Brian
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com
Re: servo drive connection
« Reply #2 on: April 09, 2007, 06:44:27 AM »
Thanks Brian
I will just have to wait for a link.I need so get the machine back up and running ASAP.
It would be handy if someone in Scotland could come in and do the connection as I'm
not very good with electronics
Regards
Brian Reid
Reid Engineering
Dundee
Re: servo drive connection
« Reply #3 on: April 09, 2007, 07:07:15 AM »
Send a Message to the user Hood, he is Scotland and may be able to help you.
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com
Re: servo drive connection
« Reply #4 on: April 09, 2007, 07:13:06 AM »
Thanks Brian

Offline fdos

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Re: servo drive connection
« Reply #5 on: April 09, 2007, 08:42:24 AM »
Brian

As the other Brian pointed out those drives require an analogue velocity command signal(-comd +comd) not Step/Dir signals.

Seems Norwin are still in business, http://www.norwin.co.uk/dcdrives.htm

It might be worth trying to contact them to get a datasheet for your drives.

Looks like you will need to obtain a couple of the skyco cards to convert Step/Dir to the +-10v signal you require.

http://www.skyko.com/

It's either that or get yourself a pair of Gecko G320's or CNC Teknix Tek10 drives, and hopefully you have encoder feedback on your original motors.

What information is on the motor nameplates?   



Wayne....
Re: servo drive connection
« Reply #6 on: April 09, 2007, 09:23:02 AM »
Wayne, thankyou for the reply.  here is the info on the motors:-
SEM  perm. magnet dc servo motor
type  mt 30E4-52
cont. stall torque 1.1 NM  tenv
max rpm 2700  Volts 140
Pulse Amps 13
Tacho 9.5  volts/1000 rpm
body size = 4 " diam. x 7. 5/8" long
position is by glass scale on one of the machines ( I have 4 all needing repaired) and another 2 with encoders on the end of the leadscrews Heidenhain  ROD 426.000B-250  ID. No. 295 434 35.
I really need to get at least one of the machines up and running ASAP but I dont know what road to take
Best Regards
Brian Reid

Offline fdos

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Re: servo drive connection
« Reply #7 on: April 09, 2007, 10:21:16 AM »
Brian.

OK for what it's worth, first try to get the machine with the ROD426 encoders working first.   These are 250 line differential output encoders and will work fine with either Gecko G320 servo drives ($114 each) or the CNC Teknix TEK10 Drive ($324 AUD)   The gecko's will work just fine and there's probably no need to have the extra sophistication of the TEK drives.


These will all  work out of the box with Mach3.

The encoders will need their own 5v power supply as the Heidenhain encoders have a faily high current requiremnet.   I have the pinouts for these if you ned it.

Do you have a pic of these machines, it's not a machine I have seen I think.

Wayne....
Re: servo drive connection
« Reply #8 on: April 09, 2007, 10:36:47 AM »
Thanks Wayne,
I will order the Geco drives and let you know when they arrive,
Regards
Brian
brian.reid@fsmail.net
Re: servo drive connection
« Reply #9 on: April 09, 2007, 10:58:42 AM »
Wayne,
I will get some pics together and there is one updated machine on ebay uk just now
cheers
Brian