Hello Guest it is March 06, 2021, 01:10:16 AM

Author Topic: AC vs DC Servo Motors  (Read 19595 times)

0 Members and 1 Guest are viewing this topic.

Re: AC vs DC Servo Motors
« Reply #10 on: August 19, 2008, 04:52:04 PM »
I have the one with the Profi Bus.  The only part number I see is Ecodrive Cs with EC M01 1-PB01-NN attached to the side.  Here is the web site....


www.boschrexroth.com/.../en/products/brc/ProductDocumentation/CurrentProducts/Drives/EcoCs/29575802.pdf

Thx

Offline Hood

*
  •  25,838 25,838
  • Carnoustie, Scotland
    • View Profile
Re: AC vs DC Servo Motors
« Reply #11 on: August 19, 2008, 05:58:45 PM »
Will have a look and see what I can see, lots of these types of drives can take all sorts of Inputs but some may be specific, hopefully the manual will tell me.
Hood

Offline Hood

*
  •  25,838 25,838
  • Carnoustie, Scotland
    • View Profile
Re: AC vs DC Servo Motors
« Reply #12 on: August 19, 2008, 06:52:11 PM »
Not finding much for the number you gave, your link returns an error as well. I have  found a manual that  deals with the ecodrives so will look through that. Its getting late here so it wont be tonight but  if I havent responded by this time tomorrow bump this thread by posting again and that will remind me ;)

Hood
Re: AC vs DC Servo Motors
« Reply #13 on: August 20, 2008, 09:33:01 AM »

Offline Hood

*
  •  25,838 25,838
  • Carnoustie, Scotland
    • View Profile
Re: AC vs DC Servo Motors
« Reply #14 on: August 20, 2008, 02:38:19 PM »
From the looks of it your drives may not accept step and direction inputs, its hard to say however as these manuals dont really give much detail, they refer to parameters and I cant find these parameters. I think there must be other manuals so will see if I can find them.
Hood
Re: AC vs DC Servo Motors
« Reply #15 on: August 20, 2008, 03:24:07 PM »
I also have the Allen Bradley Ultra3000 drive.  If it states that it has step/direction option, will this work with Mach3?  Also how does the voltage work with the AC servo drives.  Do I look at the max rated voltage on the motor and get a controller that is above that rating or below?

Thanks.

Offline Hood

*
  •  25,838 25,838
  • Carnoustie, Scotland
    • View Profile
Re: AC vs DC Servo Motors
« Reply #16 on: August 20, 2008, 04:04:02 PM »
Now you are talking :)
 I use the Ultra 3000 drives, they are great :0
 Voltage determines the speed, current determines the torque. If its the normal DSD drives you have they are 120 to 240v input, if its the HV versions they are 240 to 480 input.
 Let me know the model you have and I can advise better. Would imagine your motor is 240V so thats what you want to put into the drive.
Hood
Re: AC vs DC Servo Motors
« Reply #17 on: August 20, 2008, 05:59:44 PM »
The drive states the input voltage as 100-240 volts.  When connecting motors to this drive do I look at the specs of the motor rating and make sure the input voltage is higher?

Thanks

Offline Hood

*
  •  25,838 25,838
  • Carnoustie, Scotland
    • View Profile
Re: AC vs DC Servo Motors
« Reply #18 on: August 20, 2008, 06:26:20 PM »
Yes basically, you can go lower if you wish but if your motors are 240v ones then you will only get half their rated speed if your input voltage to the drive is 120.
 You cant just stick any ACĀ  motor on the AB drives, well you can but you may need to do some tricks, will cross that bridge if you need to ;)
Do you have enough AB drives and motors for what you need or are you planning on mixing and matching different motors to these drives?

Hood
« Last Edit: August 20, 2008, 06:28:44 PM by Hood »
Re: AC vs DC Servo Motors
« Reply #19 on: August 21, 2008, 03:33:05 PM »
I am planning on sticking different motors that were listed at the first of this topic onto the AB drives.  I have a couple of the motors pinouts that I can work with in connecting the motors up to these drives.  I am just not familiar with what to hook up to and where with the AC servo motors.