[lgalla]

Mactec what is the output voltage on the new drive used with the 750W motor?
At that voltage what would the rpm be.
Are these drives made in Canada?
What is the input voltage?
I assume there is no D/C power supply necessary
Larry

[Al_The_Man]

Are these drives made in Canada?
Larry

Larry, I notice the motors appear outwardly to be identical to those made by Shenzhen R.O.C.
Al.

[lgalla]

Al,I actually saw a photo of their drives and it says made in Canada on the label.
With the low prices of their motors I would not be surprised if they are sourced in China. I would not be afraid to purchase from someone in Canada.
If the drives are made in Canada I hope the price is good.
Larry

[Al_The_Man]

I assume there is no D/C power supply necessary
Larry

The drives show a DC supply input so it appears the supply is extra.
Al.

[mactec54]

lgalla

The New Drive does not have any need for a DC supply, everthing is done inside the drive
Input voltage is 120VAC or 220VAC

The voltage the 750W motor will be running on from the new Drive is 150V the RPM 5,000

[asuratman]

Mactec,
So all your drive no need DC supply, including your existing product now will no need dc supply. Just plug in to 220 vac or 110 vac, everything will run.

[mactec54]

lgalla
With the low prices of their motors I would not be surprised if they are sourced in China

They make there own motors, Yes they are made in China in there own motor manufacturing plant, which make other motors for other companys as well so there will be other motors that look like there's

There encoder is also there own design, & will only be found on there motors

[ihavenofish]

lgalla

The New Drive does not have any need for a DC supply, everthing is done inside the drive
Input voltage is 120VAC or 220VAC

The voltage the 750W motor will be running on from the new Drive is 150V the RPM 5,000

how are you getting 5000rpm from 150v? is that ac peak, rms, dc bus? in any of those cases 5000rpm is not possible based on the specs of the motor currently listed (which seem to change regularly).

not to mention they state a mechanical limit of 1080rpm.

[mactec54]

asuratman

Only on the New Drive at this time, The smaller Drives need the DC supply But this may change as well

[mactec54]

ihavenofish
not to mention they state a mechanical limit of 1080rpm.

Thats runing on 48V it is good up to 1080rpm

Actually the 750W motor was tested up to 6,000RPM on the new drive without any problems

[ihavenofish]

ihavenofish
not to mention they state a mechanical limit of 1080rpm.

Thats runing on 48V it is good up to 1080rpm

Actually the 750W motor will run up to 6,000RPM tested on the new drive

it says mechanical limit. that implies the bearings or rotor cant handle higher speeds. if this isnt the case, they may want to change that spec.... again.

6000rpm will need a 290vdc bus... what driver were you testing that with?

[mactec54]

ihavenofish
what driver were you testing that with?

Dmm New Drive

[ger21]

I think what he's saying is that if you get 1080rpm with 48V, then you should get ~3400rpm with 150V, not 5000rpm.

[ihavenofish]

I think what he's saying is that if you get 1080rpm with 48V, then you should get ~3400rpm with 150V, not 5000rpm.

indeed. this is why i keep pushing for clarity here. its not to bash the setup, its to actually know what it is.

mactec, if you dont know, say you dont know. dont just make up stuff that clearly doesnt make sense or isnt possible.

what is really needed is an accurately measured toque graph with the new driver (and old one for the matter). not random imaginary numbers that dont mean anything to customers (like peak instantaneous torque).

[mactec54]

ihavenofish

There nothing being made up, You can get all the motor information from there web site
nothing has changed with this motor

Its just with this new Drive the 750W motor can give it's max output that it could not do before on the low voltage drives

The Rated power 750w Peak power 1875w torque & RPM is close to the same as any other AC servo motor of this size, so I can't see why you have a problem with that

I'm not going to explain how the new Servo Drive is put together,some of what's inside this new drive is very high tec,That has never been seen or used before

The CPU has never been used in servo drives before, The high frequency switching module is there own design & new technology, This is a major break through in itself, there is much more so enjoy the ride

[ihavenofish]

ihavenofish

There nothing being made up, You can get all the motor information from there web site
nothing has changed with this motor

Its just with this new Drive the 750W motor can give it's max output that it could not do before on the low voltage drives

The Rated power 750w Peak power 1875w torque & RPM is close to the same as any other AC servo motor of this size, so I can't see why you have a problem with that

I'm not going to explain how the new Servo Drive is put together,some of what's inside this new drive is very high tec

That has never been seen or used before, The CPU has never been used in servo drives before, The high frequency switching module is there own design & new technology, This is a major break through in itself, there is much more so enjoy the ride

1000 rpm x 2.9nm = 300w.
150v / 48v = 3.125
3.125 x 1000rpm = 3125rpm.
3125 rpm x 2.9nm (although the motor is more likely 2-2.5nm at that speed) = 950w.

NOTHING you have been saying makes any mathematical sense. new "high tech" technology cant change the laws of physics.

there is no useful informaton on the website, only a bunch of numbers and a chart that do not equate to each other.

[691175002]

indeed. this is why i keep pushing for clarity here. its not to bash the setup, its to actually know what it is.

I certainly agree that many of the numbers given are inconsistant; however, it is entirely possible the old drivers are the limiting factor for the 750W motors (and not the voltage).

The DMM tech webpage recommends 700W of power supplies for 2250W of motors using the DYN-H drives.

[ihavenofish]

I certainly agree that many of the numbers given are inconsistant; however, it is entirely possible the old drivers are the limiting factor for the 750W motors (and not the voltage).

The DMM tech webpage recommends 700W of power supplies for 2250W of motors using the DYN-H drives.

the old drivers have a mac continuous output of 380W at 48v. 450w at 60v. that coresponds to 300 / 380w at the motor shaft. that is accorting to their data.

the drive is a limiting factor for speed for sure, but the numbers mactec is throwing out are purely nonsense.

you cant specify a rated output power without an exact rpm, and an exact torque at that rpm. so 750w is a random useless number and the rpm's hes been giving for the new drive are not possible with the voltage hes mentioned.

its possible that the motor gets to 3000rpm at 150v with 2.3nm of torque making 750w, similar to a standard 3000rpm 750w 80mm servo from other major comapnies... but theres no information given that suggests this is true.

[lgalla]

The new drive appears to be rated for 120/volt single phase,220/volt single phase,and 220/volt 3 phase.My shop[ has 600volt 3 phase and transformers step down to 220/v single phase and 220/3phase.Which voltage and phase would I use ?All my machines are 600v3phase.Is there an advantage to the high voltage other than lower current and smaller wire size?

[ihavenofish]

The new drive appears to be rated for 120/volt single phase,220/volt single phase,and 220/volt 3 phase.My shop[ has 600volt 3 phase and transformers step down to 220/v single phase and 220/3phase.Which voltage and phase would I use ?All my machines are 600v3phase.Is there an advantage to the high voltage other than lower current and smaller wire size?

depends how the power stage is. by the sounds of it, both 110 single and 220 single yield the same DC bus voltage.

on some drives output is relative to input though.