AC/DC-60 Dc servo amperage
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AC/DC-60 Dc servo amperage
I have have a Matsuura MC1000 VMC, built 1980, i'm starting the process of upgrading the Fanuc to Centroid, i bought the AC/DC-60 Drives, the Servo motors are rated at 128vdc and 33 amp continues, i'm using the DIOCAP3P 3 phase rectifier from Centroid, i cant figure the KVA out, what size transformer do i need?
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Re: AC/DC-60 Dc servo amperage
Please see this Tech Bulletin for how to calculate it and some examples:
http://www.centroidcnc.com/dealersuppor ... ds/161.pdf
Your machine specific components will no doubt be a bit different.
http://www.centroidcnc.com/dealersuppor ... ds/161.pdf
Your machine specific components will no doubt be a bit different.
When requesting support READ THIS POST first. https://www.viewtopic.php?f=60&t=1043
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(We pride ourselves on providing timely solid technical support but, without good information we may not be able to help and/or reply until such information is posted.)
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Re: AC/DC-60 Dc servo amperage
Thank you,
in my case its multiple transformers, Y and Z axis being 128 Vdc 33 Amp, X axis being 92 Vdc 24 Amp, the original SCR drives had individual transformers for each axis, 5 kva, secondary voltage 90 for x, 120 for Y and Z,
my problem is, i can't find transformers with 90 vac secondary for my Y Z Drives(127.26 = 1.414 x 90).
Hydraulic pump, Coolant pump, Spindle Cooler, Spindle Drive, and lube pump all operate at line voltage(200-220v),
in my case its multiple transformers, Y and Z axis being 128 Vdc 33 Amp, X axis being 92 Vdc 24 Amp, the original SCR drives had individual transformers for each axis, 5 kva, secondary voltage 90 for x, 120 for Y and Z,
my problem is, i can't find transformers with 90 vac secondary for my Y Z Drives(127.26 = 1.414 x 90).
Hydraulic pump, Coolant pump, Spindle Cooler, Spindle Drive, and lube pump all operate at line voltage(200-220v),
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- Joined: Sun Feb 18, 2018 4:11 pm
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- Oak CNC controller: Yes
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Re: AC/DC-60 Dc servo amperage
I should clarify my question, if my rectifier output is 128vdc 33amp, the input should be 3 phase 90.5vac and ???amp.
does the fact that i'm rectifying 3 poles to single pole, drop my required ac side amperage?
perhaps the title of this post should be: 3 phase rectifier, supply current calculation.
does the fact that i'm rectifying 3 poles to single pole, drop my required ac side amperage?
perhaps the title of this post should be: 3 phase rectifier, supply current calculation.
Re: AC/DC-60 Dc servo amperage
Can you use the original Fanuc transformer(s)?
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Re: AC/DC-60 Dc servo amperage
1 is a multi tap, with 3 taps 60 90 120 volt secondary, the other 2 transformers look the same but is a different revision, all 3 taps are labeled and measured 120 volt.