New Build - Tree VMC 1000
21 Aug 2012 07:20 #23460
by robh
Replied by robh on topic Re:New Build - Tree VMC 1000
have to watch out when using inverters instead of real spindle drives...
they work, can talk to the induction spindle motors fine.. but they just cant drive the spindle motors as well as the spindle drives unless u are ready to pay some good money for a inverter.
ull find ramp times are not as fast on getting up to speed.
u will also need a bigger unit then what they think you do as the current draw is quite sharp to get motors upto speed.
also watch your spindle speeds you need, if you only have 6000rpm most inverters will be ok in Hz mode...
but if you can run in vector you will find you will have much better response but not many inverters can do vector over 4000rpm
if i was going inverter id go Yaskawa as they still fit inverters into CNC machines
they work, can talk to the induction spindle motors fine.. but they just cant drive the spindle motors as well as the spindle drives unless u are ready to pay some good money for a inverter.
ull find ramp times are not as fast on getting up to speed.
u will also need a bigger unit then what they think you do as the current draw is quite sharp to get motors upto speed.
also watch your spindle speeds you need, if you only have 6000rpm most inverters will be ok in Hz mode...
but if you can run in vector you will find you will have much better response but not many inverters can do vector over 4000rpm
if i was going inverter id go Yaskawa as they still fit inverters into CNC machines
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21 Aug 2012 14:46 #23481
by dangercraft
Replied by dangercraft on topic Re:New Build - Tree VMC 1000
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21 Aug 2012 14:46 #23482
by dangercraft
Replied by dangercraft on topic Re:New Build - Tree VMC 1000
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21 Aug 2012 14:47 #23484
by dangercraft
Replied by dangercraft on topic Re:New Build - Tree VMC 1000
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21 Aug 2012 14:47 #23485
by dangercraft
Replied by dangercraft on topic Re:New Build - Tree VMC 1000
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21 Aug 2012 14:48 #23486
by dangercraft
Replied by dangercraft on topic Re:New Build - Tree VMC 1000
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21 Aug 2012 14:49 #23487
by dangercraft
Replied by dangercraft on topic Re:New Build - Tree VMC 1000
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21 Aug 2012 14:51 - 21 Aug 2012 14:52 #23488
by dangercraft
Replied by dangercraft on topic Re:New Build - Tree VMC 1000
Last edit: 21 Aug 2012 14:52 by dangercraft.
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21 Aug 2012 15:16 #23490
by dangercraft
Replied by dangercraft on topic Re:New Build - Tree VMC 1000
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21 Aug 2012 15:36 #23491
by andypugh
Replied by andypugh on topic Re:New Build - Tree VMC 1000
dangercraft wrote:
It looks like it might be fairly simple to work out what wires do what.
The three balck ones out of each drive probably go to the motors, the 6 or 7 in the other connector probably go to the Resolvers.
That leaves just the red/black and blue wires.
red/black might be logic power, or equally might be the +/-10V connections. A multimeter ought to sort that out.
Guesswork on where the wires go to is going to be the best start.
Those are big motors, and OK looking drives, and you know that they used to work well together. You can spend an awful lot of money replacing them, and stil not know for sure that the motors and drives are a good match.
Servo Drives...
It looks like it might be fairly simple to work out what wires do what.
The three balck ones out of each drive probably go to the motors, the 6 or 7 in the other connector probably go to the Resolvers.
That leaves just the red/black and blue wires.
red/black might be logic power, or equally might be the +/-10V connections. A multimeter ought to sort that out.
Guesswork on where the wires go to is going to be the best start.
Those are big motors, and OK looking drives, and you know that they used to work well together. You can spend an awful lot of money replacing them, and stil not know for sure that the motors and drives are a good match.
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